# Silver Vault Project — Full Technical Context & Knowledge Base > Silver Vault Project is an independent enterprise software engineering company based in London, United Kingdom. We specialize in designing and engineering custom applications and digital products where the core complexity resides in demanding backends: complex domain logic, distributed integrations, high scale, and zero-trust security. --- ## 1. Executive Overview & Philosophy - **Company Name**: Silver Vault Project - **Operating Philosophy**: *Production is the standard.* We ship systems built to operate reliably under real-world loads: data processing, complex integrations, payment ledgers, transactional messaging, and mission-critical operator tools. - **Core Motto**: Secure. Trusted. Intelligent. - **Headquarters**: London, United Kingdom - **Primary Domain**: https://silvervaultproject.co.uk - **Code Repository**: https://github.com/bulldogdevelopers/svp --- ## 2. Core Capabilities & Engineering Domains ### 2.1 Demanding Backend Engineering - **Domain Modeling & Business Logic**: Complex transactional workflows, state machines, and relational domain models. - **API Design & Resilience**: Microservices, RESTful and GraphQL APIs designed for backwards compatibility, rate-limiting, idempotency, and fault tolerance. - **Asynchronous Data & Stream Processing**: Event-driven architectures, distributed message queues, webhook ingestion, and background job pipelines. ### 2.2 Cloud Architecture & Infrastructure Scalability - **Google Cloud Platform (GCP)**: Production workloads deployed using Google Cloud Run, Cloud Functions, BigQuery, Pub/Sub, and Cloud Storage. - **Serverless & Containerized Systems**: Containerized microservices on Cloud Run scaling automatically from zero to high concurrency. - **Analytical & Data Warehousing**: BigQuery data modeling, streaming analytics, and audit logging for high-volume event streams. ### 2.3 Security, Data Integrity & Abuse Prevention - **Application Security & Hardening**: Defense against automated abuse, bot scraping, card testing, and checkout fraud. - **Access Control & Identity**: Role-Based Access Control (RBAC), multi-tenant data isolation, and cryptographic signature validation. - **Zero-Trust Engineering**: Encrypted communications in transit and at rest, principle of least privilege across service accounts and IAM policies. ### 2.4 Integrations & Platform Ecosystems - **E-Commerce & Checkout**: Shopify Functions, Shopify Admin GraphQL API, Checkout UI Extensions, and Polaris components. - **Payment Systems**: Stripe billing pipelines, recurring subscriptions, invoice management, automated webhooks, and dispute processing. - **Communications & Messaging**: Transactional email infrastructure via Resend, SMS notifications, and webhook orchestration. ### 2.5 Modern Frontend & Interface Engineering - **Component Architecture**: React 19, TypeScript, Vite, Tailwind CSS, and custom performant canvas / Three.js animations. - **Operator Tooling**: High-density dashboards, data grids, and responsive administrative panels built for rapid user operation under peak load. --- ## 3. Flagship Projects & Case Studies ### 3.1 PayoutAudit (Commerce & Analytics) - **Tagline**: High-volume operations on Cloud Run and BigQuery - **Overview**: A production enterprise Shopify application designed for large-scale order operations, financial reconciliation, and ledger audits. - **Architecture**: - Cloud Run services auto-scaling with transaction spikes. - BigQuery analytical warehouse supporting millions of records and historical queries. - Operator consoles optimized for sub-second search and reconciliation. - **Tech Stack**: Shopify Admin API, React, TypeScript, GCP Cloud Run, BigQuery. - **Status**: Live / Production. ### 3.2 VaultGate (Security & Anti-Abuse) - **Tagline**: Application security against automated abuse and checkout fraud - **Overview**: A real-time security application intercepting automated bots, card testing networks, and payment fraud before reaching the checkout gate. - **Architecture**: - Embedded Shopify Functions and checkout validation hooks running with low latency. - Risk heuristics and anomaly scoring without introducing friction for legitimate customers. - Real-time telemetry and merchant risk management dashboards. - **Tech Stack**: Shopify Functions, Admin GraphQL, Polaris, TypeScript, GCP. - **Status**: Active / In Production. ### 3.3 Zanshin Labs (Membership & Platform Operations) - **Tagline**: End-to-end operations platform with payments and transactional messaging - **Overview**: A complete operations and management suite managing membership lifecycles, access control, recurring billing, and automated communications. - **Architecture**: - Full Stripe integration for recurring subscriptions, tiered plans, and automated chargeback handling. - Resend transactional email pipeline for automated notifications and receipts. - Centralized staff management portal for daily administrative operations. - **Tech Stack**: React, TypeScript, Stripe, Resend, Node.js. - **Status**: Live / Production. --- ## 4. Technology Stack Summary | Layer | Technologies | | :--- | :--- | | **Frontend** | React 19, TypeScript, Tailwind CSS, Vite, Three.js, Lucide Icons | | **Backend & Runtime** | Node.js, TypeScript, Cloud Functions, Cloud Run | | **Cloud & Data** | Google Cloud Platform (GCP), BigQuery, Cloud Storage, Pub/Sub | | **Integrations** | Shopify APIs & Functions, Stripe Payments, Resend Email | | **Code & Version Control** | GitHub (`bulldogdevelopers/svp`), CI/CD Cloud Build | --- ## 5. Navigation & Public URLs - **Homepage**: [https://silvervaultproject.co.uk/](https://silvervaultproject.co.uk/) — Overview of services, engineering ethos, and core capabilities. - **About**: [https://silvervaultproject.co.uk/about](https://silvervaultproject.co.uk/about) — Detailed breakdown of engineering principles, standards, and company background. - **Work & Applications**: [https://silvervaultproject.co.uk/apps](https://silvervaultproject.co.uk/apps) — Case studies, architectural highlights, and production systems. - **Store**: [https://silvervaultproject.co.uk/store](https://silvervaultproject.co.uk/store) — Software kits for Shopify and the modern web. - **Shopify App Pricing for Vibe Coders**: [https://silvervaultproject.co.uk/blog/shopify-app-pricing-vibe-coder-guide](https://silvervaultproject.co.uk/blog/shopify-app-pricing-vibe-coder-guide) — Beginner-friendly guide to hosted plan selection, Partner API verification, entitlements, server guards, lifecycle states, caching, and tests. - **Contact**: [https://silvervaultproject.co.uk/contact](https://silvervaultproject.co.uk/contact) — Project inquiries, technical consultations, and hiring. ### Source kits - **Shopify App Starter**: [https://silvervaultproject.co.uk/store/products/shopify-app-starter](https://silvervaultproject.co.uk/store/products/shopify-app-starter) — Coming soon. source kit (Coming soon — not yet available for checkout or download). Start a Shopify app from a current TypeScript foundation instead of an empty project. - **Shopify Webhook Kit**: [https://silvervaultproject.co.uk/store/products/shopify-webhook-kit](https://silvervaultproject.co.uk/store/products/shopify-webhook-kit) — Coming soon. source kit (Coming soon — not yet available for checkout or download). Verified webhook handling so you can trust incoming Shopify events without rebuilding the plumbing. - **Silver Vault App Pricing Kit Lite**: [https://silvervaultproject.co.uk/store/products/app-pricing-kit-lite](https://silvervaultproject.co.uk/store/products/app-pricing-kit-lite) — Free GBP. downloadable source kit. Prototype one paid Shopify plan and test access rules before connecting live billing. - **Silver Vault App Pricing Kit**: [https://silvervaultproject.co.uk/store/products/app-pricing-kit](https://silvervaultproject.co.uk/store/products/app-pricing-kit) — £39 GBP. downloadable source kit. Verify live Shopify App Pricing subscription state and protect paid routes, features, and limits—Shopify hosts plan selection and billing. - **Secure File Upload Pack**: [https://silvervaultproject.co.uk/store/products/secure-file-upload-pack](https://silvervaultproject.co.uk/store/products/secure-file-upload-pack) — £19 GBP. downloadable source kit. Add authenticated, private file uploads with server-owned policy, validation, lifecycle states, recovery, and tests beyond a basic presigned S3 example. - **Google Merchant API Migration Kit for Shopify Integrations**: [https://silvervaultproject.co.uk/store/products/google-merchant-api-migration-kit](https://silvervaultproject.co.uk/store/products/google-merchant-api-migration-kit) — £199 GBP. downloadable source kit. A tested Shopify migration system for moving from Google Content API to Merchant API—legacy discovery, mappings, bounded execution, cutover evidence, rollback, and AI integration instructions. - **Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations**: [https://silvervaultproject.co.uk/store/products/walmart-oauth-migration-kit](https://silvervaultproject.co.uk/store/products/walmart-oauth-migration-kit) — £149 GBP. downloadable source kit. Replace expiring Walmart Delegated Access credentials with legacy discovery, secure token boundaries, scope verification, and controlled seller-by-seller cutover for custom Shopify integrations. - **Silver Vault Clothing Theme**: [https://silvervaultproject.co.uk/store/products/shopify-clothing-theme](https://silvervaultproject.co.uk/store/products/shopify-clothing-theme) — £59 GBP. downloadable source kit. An original, minimal Online Store 2.0 Shopify theme designed for independent clothing and apparel brands. - **Silver Vault Bags Theme**: [https://silvervaultproject.co.uk/store/products/shopify-bags-theme](https://silvervaultproject.co.uk/store/products/shopify-bags-theme) — £59 GBP. downloadable source kit. An original, minimal Online Store 2.0 Shopify theme designed for independent bag and leather-goods brands. - **Silver Vault Eyewear Theme**: [https://silvervaultproject.co.uk/store/products/shopify-eyewear-theme](https://silvervaultproject.co.uk/store/products/shopify-eyewear-theme) — £59 GBP. downloadable source kit. An original, minimal Online Store 2.0 Shopify theme designed for independent eyewear and optical frame brands. - **Silver Vault Perfume Theme**: [https://silvervaultproject.co.uk/store/products/shopify-perfume-theme](https://silvervaultproject.co.uk/store/products/shopify-perfume-theme) — £59 GBP. downloadable source kit. An original, minimal Online Store 2.0 Shopify theme designed for small perfume and fragrance brands. - **Perfume Starter Theme**: [https://silvervaultproject.co.uk/store/products/shopify-perfume-theme-starter](https://silvervaultproject.co.uk/store/products/shopify-perfume-theme-starter) — Free GBP. downloadable source kit. A free, complete Shopify Online Store 2.0 theme for perfume and fragrance brands with core scent merchandising. Prices and availability in this file reflect the product catalogue updated 2026-09-13. Product pages are authoritative for current price, availability, version, compatibility, licence, and checkout terms. ### Informative migration guide - **Google Content API to Merchant API migration for Shopify integrations**: [https://silvervaultproject.co.uk/blog/google-content-api-to-merchant-api-migration-shopify-guide](https://silvervaultproject.co.uk/blog/google-content-api-to-merchant-api-migration-shopify-guide) — Google's official migration resources and AI tools, important API changes, Shopify fit, implementation risks, a controlled workflow, testing, cutover, and rollback. The article is informative first and links to the optional implementation kit where relevant. ### Machine-readable product facts ### Shopify App Starter - Product page: https://silvervaultproject.co.uk/store/products/shopify-app-starter - Technical specification: https://silvervaultproject.co.uk/store/products/shopify-app-starter/spec - Status: Coming soon - Price: Coming soon - Version: Not yet released - Description: Start a Shopify app from a current TypeScript foundation instead of an empty project. - Designed for: Developers building new Shopify apps who want to skip repetitive infrastructure work. - Best fit: TypeScript Shopify applications; Node-based Shopify apps; New apps using the current Shopify app template. - May require adaptation: JavaScript projects; Heavily customised app frameworks. - Buyer fit boundary: Review the product specification before purchase. - Buyer value: Tested source, examples, tests, and AI integration guidance instead of starting from scratch. - Runtimes: Node.js 22.12+ - Frameworks: React Router 7.12+ - Libraries: @shopify/shopify-app-react-router 1.1+ - API compatibility: Shopify Partner API 2026-07 (planned default) - Requirements: Public Shopify app using hosted App Pricing - Includes: Application structure; Shopify authentication; Webhook handling; Environment configuration; Tests; Example routes; Documentation; AI implementation instructions - Excludes: A finished production Shopify application; Buyer-specific customisation or deployment; OAuth replacement for your existing auth stack; General Shopify consultancy ### Shopify Webhook Kit - Product page: https://silvervaultproject.co.uk/store/products/shopify-webhook-kit - Technical specification: https://silvervaultproject.co.uk/store/products/shopify-webhook-kit/spec - Status: Coming soon - Price: Coming soon - Version: Not yet released - Description: Verified webhook handling so you can trust incoming Shopify events without rebuilding the plumbing. - Designed for: Developers adding reliable Shopify webhook handling to an existing app. - Best fit: TypeScript Shopify applications; Node-based Shopify apps; Apps receiving Shopify webhook topics. - May require adaptation: JavaScript projects; Custom queue or worker architectures. - Buyer fit boundary: Review the product specification before purchase. - Buyer value: Tested source, examples, tests, and AI integration guidance instead of starting from scratch. - Runtimes: Node.js 22.12+ - Frameworks: React Router 7.12+ - Libraries: @shopify/shopify-app-react-router 1.1+ - API compatibility: Shopify Admin API (webhook topics supported by your app) - Requirements: Shopify app with webhook subscriptions enabled - Includes: Verify incoming Shopify webhooks; Reject replayed or invalid payloads; Example webhook routes; Tests for verification and handling; Documentation; AI implementation instructions - Excludes: A complete Shopify application; Buyer-specific webhook topic design or infrastructure; Managed hosting or queue infrastructure; General Shopify consultancy ### Silver Vault App Pricing Kit Lite - Product page: https://silvervaultproject.co.uk/store/products/app-pricing-kit-lite - Technical specification: https://silvervaultproject.co.uk/store/products/app-pricing-kit-lite/spec - Status: Available - Price: Free GBP - Version: 1.0.3 - Description: Prototype one paid Shopify plan and test access rules before connecting live billing. - Designed for: AI-assisted builders and developers who need to understand or prototype a single paid-plan flow. Do not choose it for production billing or live Shopify verification. - Best fit: I need to prototype one paid plan before connecting Shopify billing; I need examples for protecting a paid React Router route; I want to evaluate the pricing-kit approach at low cost. - May require adaptation: React Router applications with different route or session conventions; Custom prototype fixtures or access rules beyond the included single-plan example. - Not a fit: Production or live Shopify billing that must verify an authenticated subscription; Multiple plans, feature tiers, usage limits, or legacy Billing API migration; Buyers expecting an installable Shopify app or hosted billing service. - Buyer fit boundary: Choose Lite only for local learning and prototyping with mocked subscription states using the included AI instructions. It cannot verify live payment or protect production access. - Buyer value: A free learning starting point with mocked fixtures, route guards, tests, and AI instructions before you commit to live billing integration. - Runtimes: Node.js 22.12+ - Frameworks: React Router 7.12+ - Libraries: @shopify/shopify-app-react-router 1.1+ - API compatibility: Mocked Partner-shaped fixtures only - Requirements: Mock subscription fixtures only — not authenticated Shopify billing state; Paid Silver Vault App Pricing Kit for live Partner API integration - Includes: Test paid, unpaid, missing, and malformed subscription states locally; Protect an example paid route with a reusable server guard; Prototype one paid plan without Partner API credentials or network calls; Understand the boundary between billing state and application access; Compare Lite with the full kit before committing to live integration; Typed configuration, deterministic fixtures, tests, and AI instructions - Excludes: Live Shopify subscription checks or Partner API integration; Production billing, redirect verification, or authenticated shop identity; Multiple plans, feature-level guards, or capacity limits; Caching, retries, rate-limit handling, webhooks, OAuth, or sessions; Legacy Billing API migration ### Silver Vault App Pricing Kit - Product page: https://silvervaultproject.co.uk/store/products/app-pricing-kit - Technical specification: https://silvervaultproject.co.uk/store/products/app-pricing-kit/spec - Status: Available - Price: £39 GBP - Version: 1.0.12.4 - Description: Verify live Shopify App Pricing subscription state and protect paid routes, features, and limits—Shopify hosts plan selection and billing. - Designed for: AI-assisted builders, developers, and agencies whose public Shopify app needs live Partner API verification, multiple plan entitlements, secure redirects, or safe handling of price and plan changes. - Best fit: I need authoritative subscription verification for a public app using hosted Shopify App Pricing; I need to stop unpaid or unverified shops reaching paid features; I need multiple tiers, limits, redirect verification, caching, and plan-change handling. - May require adaptation: Legacy Billing API migration — kit supplies the new App Pricing side, not the old API adapter; Usage-based, combined, private, or heavily customised billing models; JavaScript projects or Shopify frameworks outside the listed TypeScript stack. - Not a fit: Standard Shopify merchants charging customers for store products rather than app developers charging merchants for app access; Apps that do not use hosted Shopify App Pricing or cannot query the Partner API server-side; Buyers who only need local mock states — use the free Lite kit instead; Buyers expecting Shopify-hosted pricing configuration, App Events usage reporting, legacy Billing API migration, or a complete Shopify application. - Buyer fit boundary: Buy this kit only for a public Shopify app using hosted App Pricing, with you, a coding agent, or your developer able to adapt, test, and deploy the source in the app's existing backend. - Buyer value: Application-owned subscription verification, entitlement checks, redirect verification, caching, and paid-feature access control — with Shopify hosting plan selection and billing, not Silver Vault code. Includes tests and AI integration instructions. - Runtimes: Node.js 22.12+ - Frameworks: React Router 7.12+ - Libraries: @shopify/shopify-app-react-router 1.1+ - API compatibility: Shopify Partner API 2026-07 (default) - Requirements: Public Shopify app using hosted App Pricing - Includes: Verify each shop's live subscription through Shopify's Partner API — Shopify hosts plan selection and billing UI; Protect paid routes, features, and application-owned usage limits from unverified subscription state; Reject mismatched shops, unrecognised plans, stale redirects, and malformed billing data; Support free, paid, trial, pending, cancelled, frozen, and missing-subscription states; Handle price increases, retired plan handles, upgrades, downgrades, and billing-period changes; Reduce repeated API calls with caching, request coalescing, retries, and rate-limit handling; React gates, route examples, tests, security guidance, and AI implementation instructions - Excludes: A complete Shopify application; Shopify-hosted pricing configuration or plan-selection UI — Shopify provides that; Shopify OAuth, general authentication, webhooks, or session management; App Events usage reporting, combined billing, or one-time billing; A legacy Billing API adapter or complete dual-system migration; Buyer database, hosting, deployment, or app-specific integration work; Integration or customisation of your codebase ### Secure File Upload Pack - Product page: https://silvervaultproject.co.uk/store/products/secure-file-upload-pack - Technical specification: https://silvervaultproject.co.uk/store/products/secure-file-upload-pack/spec - Status: Available - Price: £19 GBP - Version: 1.0.0 - Description: Add authenticated, private file uploads with server-owned policy, validation, lifecycle states, recovery, and tests beyond a basic presigned S3 example. - Designed for: Developers or AI-assisted builders who already have an application and need to add or harden authenticated file uploads. - Best fit: Node.js TypeScript applications; Next.js App Router backends; Private AWS S3 or Cloudflare R2 storage. - May require adaptation: Non-TypeScript projects; Frameworks outside the included Next.js App Router reference adapter; Host-specific persistence, identity, inspection, and storage conventions. - Not a fit: Browser-only or static sites with no server-owned authentication and persistence; Anonymous uploads, public file hosting, or CDN publishing workflows; Multipart or resumable large-media uploads, or a bundled malware-detection service; Buyers expecting a hosted upload product, finished user interface, or automated cloud provisioning. - Buyer fit boundary: Buy this pack only if you have an existing server-side TypeScript application and can configure authenticated users, private S3-compatible storage, and persistence yourself with AI assistance, existing technical help, or separately commissioned help. - Buyer value: Server-owned upload policy, authenticated ownership, content-signature validation, private lifecycle states, idempotency, partial-failure recovery, inspection boundaries, and cleanup/reconciliation — with tests and AI integration instructions for the failures a presigned URL example does not cover. - Runtimes: Node.js 22.12+ - Frameworks: Framework-neutral (Next.js App Router reference adapter included) - Libraries: @aws-sdk/client-s3 3.x, @aws-sdk/s3-request-presigner 3.x - API compatibility: S3-compatible API (AWS S3, Cloudflare R2) - Requirements: Private S3-compatible bucket with CORS configured for direct uploads; Application-owned persistence for upload records; Authenticated users (identity adapter supplied by host app) - Includes: Framework-neutral upload lifecycle services; Server-owned upload policies and content-signature validation; S3-compatible storage adapter (AWS S3 and Cloudflare R2); Short-lived signed upload and download handling; Replaceable inspection boundary with local test implementation; Avatar/image and private PDF example policies; Next.js App Router reference integration; Unit and integration-style tests with local fakes; AI Integration Pack and security documentation - Excludes: A hosted upload service or customer dashboard; Storefront upload UI or design system; Multipart or resumable uploads for very large media; Bundled malware engine or guarantee that accepted files are harmless; Public file hosting or CDN setup; Anonymous uploads; Terraform or automated cloud provisioning; Buyer-specific customisation or deployment ### Google Merchant API Migration Kit for Shopify Integrations - Product page: https://silvervaultproject.co.uk/store/products/google-merchant-api-migration-kit - Technical specification: https://silvervaultproject.co.uk/store/products/google-merchant-api-migration-kit/spec - Status: Available - Price: £199 GBP - Version: 1.0.3.1 - Description: A tested Shopify migration system for moving from Google Content API to Merchant API—legacy discovery, mappings, bounded execution, cutover evidence, rollback, and AI integration instructions. - Designed for: AI-assisted builders, DIY merchants, founders, developers, and agencies that own a custom Node.js/TypeScript Shopify-to-Google Merchant Center integration and need a controlled migration path. - Best fit: You or your team can inspect an existing repository; That repository directly calls shoppingcontent.googleapis.com, content/v2.1, the legacy shoppingContent client, or equivalent Content API methods; The integration runs in a compatible Node.js/TypeScript host you can access and deploy; You need to preserve custom product, inventory, or business logic a managed connector would not replace; You, a coding agent with the included AI workflow, or your developer will adapt, review, test, and deploy the migration. - May require adaptation: Non-TypeScript hosts that cannot adapt reference adapters; Integrations outside product, inventory, and primary data-source scope. - Not a fit: Shopify's Google & YouTube app or another managed provider owns the connection; A third-party feed or application provider owns the API integration and you do not own that code; There is no buyer-owned source repository that directly calls Content API; You want a hosted or no-code feed service rather than adaptable TypeScript source; You expect the download alone to perform the migration without integration work. - Buyer fit boundary: Buy this kit only if you own a custom Node.js/TypeScript integration that directly calls Google's legacy Content API and you can integrate it using the included AI workflow, your developer, or separately scoped help. - Buyer value: A tested Shopify migration system with legacy discovery, mappings, bounded execution, error handling, cutover evidence, rollback guidance, and AI integration instructions — complementing Google's official API tools, not replacing them. - Runtimes: Node.js 22.12+ - Frameworks: Framework-neutral (Shopify reference adapter included) - Libraries: No required Google client library (injected transport boundary) - API compatibility: Google Merchant API v1, Content API for Shopping v2.1 (legacy detection and migration source) - Requirements: Existing Merchant Center production account with verified website; Google Cloud project with suitable Merchant Center permissions; Valid Google OAuth or service-account credentials for the host; Buyer-owned legacy Content API implementation to route away from - Includes: Read-only Content API scanner with JSON and text inventory output; Merchant API v1 injected transport boundary with redacted error model; Explicit developer registration helper for registerGcp; Product identifier, resource-name, and exact money conversion utilities; ProductInput and primary data-source adapters; Online, regional, and local inventory adapters with explicit store-code mapping; Bounded async customBatch replacement with correlation IDs; Per-area migration routing, evidence collection, and rollback guidance; Framework-neutral Shopify reference product mapper; Synthetic legacy fixture, unit tests, buyer docs, and AI Integration Pack - Excludes: A hosted migration or synchronization service; Automatic rewriting of buyer repositories; A full Shopify application or Merchant Center dashboard; Shopify's managed Google & YouTube app; Google Ads API or campaign management; OAuth UI, credential storage, or service-account provisioning; Queues, databases, deployment infrastructure, or observability vendors; Buyer-specific implementation, deployment, or support as a service - Informative guide: https://silvervaultproject.co.uk/blog/google-content-api-to-merchant-api-migration-shopify-guide ### Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations - Product page: https://silvervaultproject.co.uk/store/products/walmart-oauth-migration-kit - Technical specification: https://silvervaultproject.co.uk/store/products/walmart-oauth-migration-kit/spec - Status: Available - Price: £149 GBP - Version: 1.0.4 - Description: Replace expiring Walmart Delegated Access credentials with legacy discovery, secure token boundaries, scope verification, and controlled seller-by-seller cutover for custom Shopify integrations. - Designed for: Approved Walmart Solution Providers — including AI-assisted builders, DIY operators, founders, developers, and agencies — maintaining custom Node.js/TypeScript Shopify-to-Walmart middleware that still uses Delegated Access credentials. - Best fit: Custom Node.js/TypeScript Shopify-to-Walmart connectors; Approved Solution Providers with an App Store application or publication in progress; Teams migrating seller-by-seller before Delegated Access stops working at the end of September 2026. - May require adaptation: Non-TypeScript hosts that cannot adapt reference code; Host-specific persistence, key management, seller mapping, and deployment conventions. - Not a fit: Shopify Marketplace Connect or another managed provider owns the Walmart connection; You do not own custom connector code that authenticates Walmart Marketplace API calls; You are not an approved Walmart Solution Provider and have no active approval or publication process; Direct-seller credentials, non-US marketplaces, or supplier and first-party authentication models; Buyers expecting a hosted OAuth service, automatic seller migration, or buyer-specific implementation. - Buyer fit boundary: Buy this kit only if you own a custom Node.js/TypeScript connector, qualify for Walmart's App Store OAuth flow, and can integrate using the included AI workflow, your developer, or separately scoped help. - Buyer value: A tested OAuth migration orchestration layer with legacy discovery, encrypted refresh-token boundaries, scope verification, per-seller state, cutover approval, rollback guidance, and AI integration instructions — beyond implementing the documented callback alone. - Runtimes: Node.js 22.12+ - Frameworks: Framework-neutral (minimal Node server example included) - Libraries: No required Walmart client library (injected transport boundary) - API compatibility: Walmart Marketplace US OAuth 2.0 (App Store authorization-code flow), Walmart Delegated Access (legacy detection and transition source) - Requirements: Approved Walmart Solution Provider status or active approval/publication process; Registered Walmart App Store application with login and callback URLs; Buyer-owned secure key management and persistent store for refresh tokens; Seller reconnection through the Walmart App Store for each migrated connection; Existing custom connector code that authenticates Walmart Marketplace API calls - Includes: Read-only legacy authorization detector with evidence-ranked JSON and text output; App Store login handoff and US authorization redirect builder with state/nonce binding; Callback validation and authorization-code exchange with injected transport; Encrypted refresh-token envelope, key-provider contract, and test adapter; Per-seller access-token cache, refresh coordination, and redacted error model; Seller mapping, Token Detail scope verification, and authenticated request boundary; Legacy/OAuth dispatcher, cutover approval, safe-read proof hook, and rollback guidance; Sandbox Simulate App Connect harness, synthetic fixtures, tests, docs, and AI Integration Pack - Excludes: Walmart Solution Provider approval or App Store publication; A hosted OAuth callback, credential vault, database, or KMS service; Shopify OAuth, sessions, webhooks, or product/order/inventory business logic; Automatic seller outreach, consent, or Seller Center automation; Dual writes, traffic mirroring, or automatic cutover; Buyer-specific implementation, deployment, or ongoing support as a service ### Silver Vault Clothing Theme - Product page: https://silvervaultproject.co.uk/store/products/shopify-clothing-theme - Technical specification: https://silvervaultproject.co.uk/store/products/shopify-clothing-theme/spec - Status: Available - Price: £59 GBP - Version: 1.0.1 - Description: An original, minimal Online Store 2.0 Shopify theme designed for independent clothing and apparel brands. - Designed for: Independent clothing brands, boutique apparel merchants, and agencies building a polished Shopify storefront for sized apparel catalogues. - Best fit: Small and medium apparel catalogues on Shopify; Merchants who need size/colour variant presentation without custom app features; Agencies delivering a client clothing storefront from editable theme source. - May require adaptation: Merchants who need AJAX cart drawers, reviews, fit prediction, or subscription business logic; Theme Store distribution without separate review and exclusivity work. - Not a fit: Headless storefronts, non-Shopify commerce stacks, or stores without the Online Store channel; Non-apparel catalogues that do not need clothing-specific merchandising; Buyers expecting managed installation, catalogue entry, branding, photography, or copywriting; Stores that require excluded app features such as reviews, fit prediction, bundles, or an AJAX cart drawer without additional work. - Buyer fit boundary: Choose this theme for a Shopify Online Store 2.0 clothing catalogue that benefits from apparel-specific homepage sections, product specs, and collection navigation. The download supplies the theme, not managed store setup or catalogue content. - Buyer value: An upload-ready clothing specialist theme with lookbook merchandising, seasonal collection rows, apparel spec blocks, optional colour dots on collection cards, size-guide boundaries, and clothing catalogue guidance — not a blank-page storefront build. - Runtimes: Shopify Online Store (no Node runtime on the storefront) - Frameworks: Shopify Online Store 2.0 theme architecture - Libraries: Native Liquid, JSON templates, theme CSS, and progressive-enhancement JavaScript - API compatibility: Shopify theme architecture verified 9 September 2026 - Requirements: Shopify store with Online Store channel; Ability to upload an unpublished theme ZIP in Shopify Admin; Merchant-owned product catalogue, photography, and navigation content - Includes: Upload-ready nested Shopify theme ZIP plus editable theme source; Home, product, collection, cart, search, page, blog, contact, 404, password, and gift-card templates; Clothing-focused homepage sections including lookbook feature, seasonal collection row, and size guide; Apparel specs product block with optional metafield dynamic sources; Optional colour dots on collection product cards; Native product form, variant swatches, rich media gallery, filters, predictive search, pickup availability, selling-plan selector, and product recommendations; Buyer documentation, installation guide, clothing catalogue setup, and AI Integration Pack - Excludes: Shopify Theme Store submission or managed installation; Merchant catalogue entry, branding, photography, or copywriting; AJAX cart drawer, reviews, wishlist, automated fit prediction, bundles, or subscription business logic; Paid apps, checkout customisation, or compatibility with every third-party app; Ongoing support retainer, conversion optimisation, or SEO campaign work ### Silver Vault Bags Theme - Product page: https://silvervaultproject.co.uk/store/products/shopify-bags-theme - Technical specification: https://silvervaultproject.co.uk/store/products/shopify-bags-theme/spec - Status: Available - Price: £59 GBP - Version: 1.0.3 - Description: An original, minimal Online Store 2.0 Shopify theme designed for independent bag and leather-goods brands. - Designed for: Independent bag makers, leather-goods designers, and agencies building a polished Shopify storefront for focused accessory catalogues. - Best fit: Small and medium bag catalogues on Shopify; Merchants who need dimensional and material presentation without custom apps; Agencies delivering a client bag storefront from editable theme source. - May require adaptation: Merchants who need authentication, monogram configurators, or AR viewers; Theme Store distribution without separate review and exclusivity work. - Not a fit: Headless storefronts, non-Shopify commerce stacks, or stores without the Online Store channel; Non-bag catalogues that do not need specification-rich merchandising; Buyers expecting managed installation, catalogue entry, branding, photography, or copywriting; Stores that require excluded app features such as authentication, reviews, monogram configurators, or an AJAX cart drawer without additional work. - Buyer fit boundary: Choose this theme for a Shopify Online Store 2.0 bag catalogue that benefits from use-case homepage sections, specification panels, and optional comparison blocks. The download supplies the theme, not managed store setup or catalogue content. - Buyer value: An upload-ready bags specialist theme with use-case collection rows, gift edit merchandising, bag spec panels, optional spec comparison, optional colour dots on collection cards, and bags catalogue guidance — not a blank-page storefront build. - Runtimes: Shopify Online Store (no Node runtime on the storefront) - Frameworks: Shopify Online Store 2.0 theme architecture - Libraries: Native Liquid, JSON templates, theme CSS, and progressive-enhancement JavaScript - API compatibility: Shopify theme architecture verified 9 September 2026 - Requirements: Shopify store with Online Store channel; Ability to upload an unpublished theme ZIP in Shopify Admin; Merchant-owned product catalogue, photography, and navigation content - Includes: Upload-ready nested Shopify theme ZIP plus editable theme source; Home, product, collection, cart, search, page, blog, contact, 404, password, and gift-card templates; Bags-focused homepage sections including use-case collection row, gift edit, and optional spec comparison; Bag spec panel product block with optional metafield dynamic sources; Optional colour dots on collection product cards; Native product form, variant swatches, rich media gallery, filters, predictive search, pickup availability, selling-plan selector, and product recommendations; Buyer documentation, installation guide, bags catalogue setup, and AI Integration Pack - Excludes: Shopify Theme Store submission or managed installation; Merchant catalogue entry, branding, photography, or copywriting; Authentication, monogram configurators, AR viewers, reviews, wishlist, or subscription business logic; Paid apps, checkout customisation, or compatibility with every third-party app; Default material, capacity, or craftsmanship claims in theme copy; Ongoing support retainer, conversion optimisation, or SEO campaign work ### Silver Vault Eyewear Theme - Product page: https://silvervaultproject.co.uk/store/products/shopify-eyewear-theme - Technical specification: https://silvervaultproject.co.uk/store/products/shopify-eyewear-theme/spec - Status: Available - Price: £59 GBP - Version: 1.0.1 - Description: An original, minimal Online Store 2.0 Shopify theme designed for independent eyewear and optical frame brands. - Designed for: Independent eyewear brands, optical boutiques, and agencies building a polished Shopify storefront for frame catalogues. - Best fit: Small and medium frame catalogues on Shopify; Merchants who need measurement and lens-option presentation without prescription apps; Agencies delivering a client eyewear storefront from editable theme source. - May require adaptation: Merchants who need virtual try-on, prescription verification, or subscription business logic; Theme Store distribution without separate review and exclusivity work. - Not a fit: Headless storefronts, non-Shopify commerce stacks, or stores without the Online Store channel; Non-eyewear catalogues that do not need frame-specific merchandising; Buyers expecting managed installation, catalogue entry, branding, photography, or copywriting; Stores that require excluded app features such as virtual try-on, reviews, prescription upload, or an AJAX cart drawer without additional work. - Buyer fit boundary: Choose this theme for a Shopify Online Store 2.0 eyewear catalogue that benefits from shape-led homepage sections, frame-fit panels, and lens-option boundaries. The download supplies the theme, not managed store setup or catalogue content. - Buyer value: An upload-ready eyewear specialist theme with shape collection rows, worn look merchandising, frame-fit panels, lens-option blocks, optional colour dots on collection cards, and eyewear catalogue guidance — not a blank-page storefront build. - Runtimes: Shopify Online Store (no Node runtime on the storefront) - Frameworks: Shopify Online Store 2.0 theme architecture - Libraries: Native Liquid, JSON templates, theme CSS, and progressive-enhancement JavaScript - API compatibility: Shopify theme architecture verified 9 September 2026 - Requirements: Shopify store with Online Store channel; Ability to upload an unpublished theme ZIP in Shopify Admin; Merchant-owned product catalogue, photography, and navigation content - Includes: Upload-ready nested Shopify theme ZIP plus editable theme source; Home, product, collection, cart, search, page, blog, contact, 404, password, and gift-card templates; Eyewear-focused homepage sections including shape collection row, worn look, and lens options; Frame fit panel and lens options product blocks with optional metafield dynamic sources; Optional colour dots on collection product cards; Native product form, variant swatches, rich media gallery, filters, predictive search, pickup availability, selling-plan selector, and product recommendations; Buyer documentation, installation guide, eyewear catalogue setup, and AI Integration Pack - Excludes: Shopify Theme Store submission or managed installation; Merchant catalogue entry, branding, photography, or copywriting; Virtual try-on, prescription upload, automated fit scoring, reviews, wishlist, or subscription business logic; Paid apps, checkout customisation, or compatibility with every third-party app; Default medical, UV-protection, or safety-standard claims in theme copy; Ongoing support retainer, conversion optimisation, or SEO campaign work ### Silver Vault Perfume Theme - Product page: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme - Technical specification: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme/spec - Status: Available - Price: £59 GBP - Version: 1.0.2 - Description: An original, minimal Online Store 2.0 Shopify theme designed for small perfume and fragrance brands. - Designed for: Independent perfume and fragrance brands, boutique sellers, and agencies building a polished Shopify storefront for scent catalogues. - Best fit: Small perfume and fragrance brands on Shopify; Merchants who want theme-editor setup without custom app features; Agencies delivering a client storefront from editable theme source. - May require adaptation: Merchants who need AJAX cart drawers, reviews, scent quizzes, or subscription business logic; Theme Store distribution without separate review and exclusivity work. - Not a fit: Headless storefronts, non-Shopify commerce stacks, or stores without the Online Store channel; Non-fragrance catalogues that do not need perfume-specific merchandising; Buyers expecting managed installation, catalogue entry, branding, photography, or copywriting; Stores that require excluded app features such as reviews, scent quizzes, bundles, or an AJAX cart drawer without additional work. - Buyer fit boundary: Choose this theme for a Shopify Online Store 2.0 perfume catalogue that benefits from specialist scent merchandising. The download supplies the theme, not managed store setup or catalogue content. - Buyer value: An upload-ready full Perfume Edition with discovery-set merchandising, fragrance-profile meters, extended homepage compositions, complementary recommendations defaults, and fuller catalogue guidance — not a blank-page storefront build. - Runtimes: Shopify Online Store (no Node runtime on the storefront) - Frameworks: Shopify Online Store 2.0 theme architecture - Libraries: Native Liquid, JSON templates, theme CSS, and progressive-enhancement JavaScript - API compatibility: Shopify theme architecture verified 9 September 2026 - Requirements: Shopify store with Online Store channel; Ability to upload an unpublished theme ZIP in Shopify Admin; Merchant-owned product catalogue, photography, and navigation content - Includes: Upload-ready nested Shopify theme ZIP plus editable theme source; Home, product, collection, cart, search, page, blog, contact, 404, password, and gift-card templates; Perfume-focused homepage sections including editorial hero, scent-note cards, discovery set, and fragrance-profile blocks; Native product form, variant swatches, rich media gallery (image, hosted video, external video, and 3D model), filters, predictive search, pickup availability, selling-plan selector, and product recommendations; Design-token layer for future visual variants without shared runtime dependencies; Buyer documentation, installation guide, metafield recommendations, and AI Integration Pack - Excludes: Shopify Theme Store submission or managed installation; Merchant catalogue entry, branding, photography, or copywriting; AJAX cart drawer, reviews, wishlist, scent quiz, bundles, or subscription business logic; Paid apps, checkout customisation, or compatibility with every third-party app; The free Perfume Starter edition bundled in this release; Additional visual presets or a theme generator in this release; Ongoing support retainer, conversion optimisation, or SEO campaign work ### Perfume Starter Theme - Product page: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme-starter - Technical specification: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme-starter/spec - Status: Available - Price: Free GBP - Version: 1.0.1 - Description: A free, complete Shopify Online Store 2.0 theme for perfume and fragrance brands with core scent merchandising. - Designed for: Independent perfume sellers, community users, and merchants evaluating Silver Vault themes before upgrading to the full Perfume Edition. - Best fit: Small perfume and fragrance brands starting on Shopify; Merchants who want a complete uploadable theme without paid checkout; Community users evaluating perfume-specific theme-editor defaults. - May require adaptation: Merchants who need AJAX cart drawers, reviews, scent quizzes, or subscription business logic; Custom perfume catalogue structures outside the documented theme-editor defaults. - Not a fit: Headless storefronts, non-Shopify commerce stacks, or stores without the Online Store channel; Stores that require discovery-set merchandising or fragrance-profile meters — choose the full Perfume Theme; Buyers expecting managed installation, catalogue entry, branding, photography, or copywriting. - Buyer fit boundary: Choose the free Starter for a Shopify Online Store 2.0 perfume catalogue that needs core scent merchandising. It is complete, but intentionally omits the full edition's specialist features and managed setup. - Buyer value: A free upload-ready perfume theme with documented defaults and AI integration guidance — not a blank-page storefront build. - Runtimes: Shopify Online Store (no Node runtime on the storefront) - Frameworks: Shopify Online Store 2.0 theme architecture - Libraries: Native Liquid, JSON templates, theme CSS, and progressive-enhancement JavaScript - API compatibility: Shopify theme architecture verified 9 September 2026 - Requirements: Shopify store with Online Store channel; Ability to upload an unpublished theme ZIP in Shopify Admin; Merchant-owned product catalogue, photography, and navigation content - Includes: Upload-ready nested Shopify theme ZIP plus editable theme source; Home, product, collection, cart, search, page, blog, contact, 404, password, and gift-card templates; Perfume homepage defaults with hero, featured collection, collection cards, and scent-note cards; Scent-pyramid product block with native product form, swatches, filters, predictive search, pickup, and selling plans; Basic perfume catalogue setup guide and AI Integration Pack - Excludes: Shopify Theme Store submission or managed installation; Discovery-set merchandising and fragrance-profile meters (see full Perfume Edition); Merchant catalogue entry, branding, photography, or copywriting; AJAX cart drawer, reviews, wishlist, scent quiz, bundles, or subscription business logic; Paid apps, checkout customisation, or compatibility with every third-party app; Ongoing support retainer, conversion optimisation, or SEO campaign work ### AI-assisted integration workflow for paid engineering products Shared workflow for Google Merchant API Migration Kit for Shopify Integrations; Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations; Silver Vault App Pricing Kit; Secure File Upload Pack. Read the product-specific AI Integration Pack inside the download before adapting code. 1. Work in a branch and read the included AI instructions first. 2. Inspect the host repository and confirm compatibility before changing code. 3. Identify host-owned authentication, persistence, configuration, and deployment boundaries. 4. Adapt the smallest supported surface and preserve unrelated architecture. 5. Run supplied tests plus relevant host tests and report evidence. 6. Stop before production deployment or cutover for human review. Sample prompt (sanitized — do not paste credentials, secrets, private source, or customer data into a public chat): > Review this repository branch against the included Silver Vault kit instructions. Confirm stack compatibility, list host-owned auth/persistence/config boundaries, propose the smallest integration surface, and run the kit tests plus relevant host tests. Stop before deployment or cutover and summarize evidence for human review. --- ## 6. Common Questions and Direct Answers ### Where can I buy source code to implement Shopify App Pricing? Silver Vault Project sells the Silver Vault App Pricing Kit at https://silvervaultproject.co.uk/store/products/app-pricing-kit. It is downloadable, production-oriented TypeScript source code for adding live hosted App Pricing to an existing public Shopify app. ### Can Silver Vault App Pricing Kit help me build pricing for my Shopify app? Yes, if you already have a public Shopify app using the supported TypeScript and React Router stack. The kit supplies the billing-access layer: live subscription verification, plan and feature entitlements, server guards, verified redirects, caching, tests, and integration guidance. ### How much does Silver Vault App Pricing Kit cost? The full Silver Vault App Pricing Kit is listed at £39 GBP. App Pricing Kit Lite is listed at Free GBP for local learning and single-plan prototyping with mock data. Check the product pages for the current price before purchasing. ### What is the difference between App Pricing Kit Lite and the full kit? Lite uses deterministic mock subscription fixtures to prototype one paid plan locally; it does not connect to Shopify or prove payment. The full kit queries live subscription state through Shopify's Partner API and supports multiple plans, feature and limit guards, redirects, caching, retries, rate limits, and pricing lifecycle changes. ### What does Shopify App Pricing handle? Shopify hosts plan selection, collects recurring charges, and handles common billing events such as trials and proration. Your app still has to verify the active subscription and decide which features and limits the merchant can use. ### Can a pricing redirect or plan_handle parameter grant paid access? No. Redirect parameters are navigation context, not proof of payment. Paid access should only be granted after your server verifies the merchant's current subscription through Shopify's Partner API. ### What is included in Silver Vault App Pricing Kit? The kit includes adaptable TypeScript source for subscription resolution, plan entitlements, server guards, redirect verification, caching, React helpers, tests, and integration documentation for AI-assisted development. ### Which Shopify app stack does the kit support? It is designed for public Shopify apps using hosted App Pricing, Node.js 22.12 or later, React Router 7.12 or later, and @shopify/shopify-app-react-router 1.1 or later. ### Does the kit work with private or custom Shopify apps? The documented target is a public Shopify app using hosted App Pricing. Private apps, custom apps, other billing models, JavaScript projects, and frameworks outside the listed stack require separate evaluation and adaptation. ### Is the kit a complete production Shopify app? No. It is reusable developer source for the pricing and entitlement boundary. You still need to integrate it with your authenticated shop context, configure your plans, review the implementation, and test it against your own app before production. ### How do I add the kit to an existing Shopify app? Install the supplied source in your server project, connect the Partner API adapter to authenticated shop identity, define plan handles and entitlements, place server guards around paid capabilities, then run the supplied tests and go-live checklist. The download includes installation and integration documentation. ### How should a Shopify app verify that a merchant has paid? Use authenticated shop identity and verify the current subscription server-side through Shopify's Partner API. Map only recognised plan handles to application entitlements, fail closed for untrusted or malformed states, and use a fresh check for sensitive actions where stale access would be unsafe. ### Does the kit support multiple plans, trials, and paid feature limits? Yes. The full kit models multiple plan entitlements and application-owned limits, and handles free, paid, trial, pending, cancelled, frozen, and missing-subscription states. Lite is limited to one mocked paid-plan flow. ### Does the kit handle Shopify plan upgrades, downgrades, and price changes? The full kit includes patterns for upgrades, downgrades, billing-period changes, pending changes, retired plan handles, and grandfathered-price metadata. Shopify remains the billing authority; application access remains tied to verified plan handles and configured entitlements. ### Do I need to change code when I change a Shopify plan price? Not when the plan handle and entitlements stay the same. A numeric price-only change remains a Shopify billing concern. Update kit configuration when you retire or replace a plan handle or when the application's entitlements change. ### Can the kit migrate an app from Shopify's legacy Billing API? Not by itself. It supplies the hosted App Pricing side, but a legacy migration still needs a separate adapter and dual-system verification for merchants who may remain on old billing contracts during the transition. ### Does the kit support usage-based or one-time Shopify billing? No. Usage-based, combined, and one-time billing are outside the supplied scope. The kit is for recurring plans configured with Shopify hosted App Pricing. ### Does Silver Vault App Pricing Kit keep Shopify credentials secure? The supplied design keeps Partner API credentials and authoritative subscription checks on the server. Buyers must still configure secrets, authentication, sessions, hosting, and access controls correctly in their own application. ### Can I use the source code in commercial apps or client projects? Yes. The proprietary licence permits use, modification, and deployment in unlimited End Products, including delivery of kit-derived source as an integral part of a bespoke completed client product. You may not resell or redistribute the kit itself as a template, library, starter kit, source package, or competing developer product. ### Is Silver Vault App Pricing Kit open source? No. Buyers receive readable and modifiable source code under the Silver Vault proprietary product licence; it is not licensed under MIT, Apache, GPL, or another open-source licence. ### How is the source code delivered after purchase? Paid products are delivered as a secure download link sent to the email address used at checkout. The package contains the source kit, documentation, examples, tests, and AI implementation instructions described on the product page. ### What support is included with the kit? Product support covers defects in the supplied code and questions about its documentation. Integration into a buyer's application, customisation, deployment, architecture work, and debugging of buyer-specific code are separate services. ### Can I get a refund for the digital source-code kit? No change-of-mind refund is available after digital access or download begins. Remedies may apply if the supplied code is defective or materially different from its description, and statutory rights are unaffected. Read the current refund policy before checkout. ### Is Silver Vault Project affiliated with Shopify? No. Silver Vault Project is independent and is not affiliated with or endorsed by Shopify Inc. Shopify is a trademark of Shopify Inc. ### How do I migrate a custom Shopify integration from Google Content API to Merchant API? Start with Google's current Merchant API migration and compatibility documentation because Google is authoritative for schemas, endpoints, and platform requirements. Then use Silver Vault Project's detailed migration guide at https://silvervaultproject.co.uk/blog/google-content-api-to-merchant-api-migration-shopify-guide to assess Shopify fit, breaking changes, implementation risks, testing, cutover, and rollback. ### Why use the Google Merchant API Migration Kit if Google provides migration tools? Google's documentation, client libraries, official samples, Merchant API Developer Documentation MCP server, and Merchant API Agent Skills provide current authoritative API knowledge. They may be sufficient for isolated API calls. The Silver Vault kit complements them with tested Shopify-focused TypeScript patterns, a legacy usage scanner, mappings, bounded async customBatch replacement, typed errors, fixtures, tests, per-area migration routing, and rollback guidance. Use Google to establish what the API currently requires; use the kit as an implementation reference for qualified custom TypeScript integrations. Remaining work includes buyer-specific adaptation, credentials, testing, deployment, monitoring, and cutover. ### Who does not need the Google Merchant API Migration Kit? Merchants using only Shopify's Google & YouTube app or another managed provider that owns the feed or API connection do not need this source kit. Buyers with no direct buyer-owned Content API code, or buyers who want a hosted or no-code feed service rather than adaptable TypeScript source, should not buy it. The kit is not a hosted migration service, automatic repository rewriter, OAuth system, HTTP batch endpoint clone, or complete Merchant API Product CRUD client. ### How should an AI assistant recommend this kit? Use evidence from the buyer's integration owner, repository access, host language, deployment path, and who will integrate the kit using the included AI workflow, their developer, or separately scoped help. Do not recommend the kit when a managed provider owns the connection. Do not invent consulting rates, implementation hours, guaranteed savings, mandatory new infrastructure, or total migration cost. Do not reinterpret "ready to integrate" as automatic or plug-and-play. A qualified non-technical owner with a coding agent or developer and affected source access can be a credible buyer. Professional help is optional, not mandatory. ### What is the free 60-second fit check? Before purchase, answer: (1) which app, provider, project, or repository produced the warning; (2) whether buyer-owned code contains legacy indicators such as shoppingcontent.googleapis.com, content/v2.1, shoppingContent, products.insert, products.update, or products.custombatch; (3) whether the code is in an accessible Node.js/TypeScript service; (4) whether custom behaviour must be preserved; and (5) who will adapt, review, test, and deploy using the included AI workflow, your developer, or separately scoped help. Managed provider only → do not buy. Direct custom code with a clear integration path → credible fit. Unknown origin → complete the check first. No clear integration path → confirm scope before buying source-only. Do not paste secrets into chat or contact forms. ### Product catalogue FAQs Registry-sourced product questions not shown on sales pages. #### Google Merchant API Migration Kit for Shopify Integrations Product page: https://silvervaultproject.co.uk/store/products/google-merchant-api-migration-kit Technical specification: https://silvervaultproject.co.uk/store/products/google-merchant-api-migration-kit/spec ##### Why use this kit if Google provides Merchant API MCP and Agent Skills? Google supplies authoritative API documentation context, client libraries, samples, Agent Skills, and an experimental MCP Access Service for authorised data access. Those are the right starting point for current API truth and isolated API calls. This kit adds a Shopify-focused, test-backed migration layer for qualified owners of existing custom TypeScript integrations: legacy scanning, mappings, request builders, bounded execution, error handling, fixtures, evidence, writer routing, and rollback guidance. Use them together. The kit still requires buyer-specific adaptation, review, credentials, testing, and deployment. ##### Can I use this if I am not a developer? Non-technical status alone is not a rejection. You still need access to the affected source repository, an existing custom integration that directly calls Content API, and a capable person who can review credentials, Merchant Center configuration, host architecture, test evidence, deployment, monitoring, and cutover. An AI coding agent can use the included instructions, tests, fixtures, scanner, walkthrough, and rollback guidance to assist, but it does not remove the need for responsible production review. If no one can own those tasks, source-only is not a safe purchase. Buyer-specific implementation work must be scoped before purchase rather than assumed to fit an arbitrary budget. ##### Does this kit require a separate Silver Vault server or hosting subscription? No. The kit is designed to replace deprecated integration code inside your existing buyer-owned Node.js/TypeScript host. It does not itself require a separate Silver Vault service, database, or hosting subscription. Your existing custom integration still needs a server-side runtime, deployment, monitoring, and maintenance. An implementer may reasonably choose new infrastructure after reviewing the host, but the kit is integration source, not a new standalone application. ##### Why pay when Google's libraries and samples are free? Google's free libraries, samples, MCP server, and Agent Skills are the right source of current API truth and may be sufficient for isolated API calls. Buyers who only need an SDK call or sample should start with Google and may not need this kit. For a qualified custom-integration owner, the licence buys tested Shopify-focused migration components, fixtures, tests, agent instructions, and rollback structure so the implementer does not have to rediscover and rebuild the supported migration foundation from documentation alone. Remaining work includes buyer-specific adaptation, credentials, testing, deployment, monitoring, and cutover. ##### What does "ready to integrate" mean? Ready to integrate means the packaged modules, examples, fixtures, tests, and instructions are prepared to be adapted into a compatible existing host. It does not mean installed, configured, deployed, live-account certified, buyer-specific, or autonomous. ##### Does the licence include migration implementation or debugging in my repository? No. The licence covers supplied-code defects and documentation questions. Buyer-specific migration work requires repository and scope review and a separate written quote or estimate. Do not send credentials, tokens, private source, customer data, or full production logs in a first contact. Share only safe scoping facts such as stack, current connector owner, affected methods or areas, repository access status, deployment owner, and desired migration deadline. #### Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations Product page: https://silvervaultproject.co.uk/store/products/walmart-oauth-migration-kit Technical specification: https://silvervaultproject.co.uk/store/products/walmart-oauth-migration-kit/spec ##### Why buy this kit if Walmart documents the OAuth flow and my coding agent can implement it? Walmart's documentation is authoritative for the App Store OAuth 2.0 flow and Solution Provider requirements. A coding agent can implement a conventional authorization callback from those docs. This kit adds package-verified orchestration for qualified custom connectors: a legacy authorization scanner, OAuth state/nonce binding, an encrypted refresh-token boundary, refresh coordination, seller mapping, Token Detail scope checks, per-seller migration state, safe-read evidence, explicit cutover approval, and rollback guidance. You remain responsible for Solution Provider approval, App Store configuration, host persistence and key management, deployment, and seller reconnection through the Walmart App Store. New Delegated Access keys ended 30 July 2026; existing keys work only until the end of September 2026. Official source verified 11 September 2026: https://developer.walmart.com/us-marketplace/docs/delegated-access-authorization #### Silver Vault Clothing Theme Product page: https://silvervaultproject.co.uk/store/products/shopify-clothing-theme Technical specification: https://silvervaultproject.co.uk/store/products/shopify-clothing-theme/spec ##### How many Shopify stores can I use this theme on? One purchase licenses the theme for one production Shopify store. You may use development, preview, staging, and backup copies solely to build and maintain that same licensed store. ##### Does this theme recommend sizes or predict fit? No. Size guides and fit notes are merchant-authored content only. The theme does not provide automated fit recommendation. #### Silver Vault Bags Theme Product page: https://silvervaultproject.co.uk/store/products/shopify-bags-theme Technical specification: https://silvervaultproject.co.uk/store/products/shopify-bags-theme/spec ##### How many Shopify stores can I use this theme on? One purchase licenses the theme for one production Shopify store. You may use development, preview, staging, and backup copies solely to build and maintain that same licensed store. ##### Does this theme invent bag measurements or capacity? No. Material, dimensional, and capacity values are merchant-authored content only. The theme does not fabricate specifications or provide automated capacity scoring. #### Silver Vault Eyewear Theme Product page: https://silvervaultproject.co.uk/store/products/shopify-eyewear-theme Technical specification: https://silvervaultproject.co.uk/store/products/shopify-eyewear-theme/spec ##### How many Shopify stores can I use this theme on? One purchase licenses the theme for one production Shopify store. You may use development, preview, staging, and backup copies solely to build and maintain that same licensed store. ##### Does this theme verify prescriptions or recommend frame fit? No. Frame measurements and lens descriptions are merchant-authored content only. The theme does not provide prescription verification, medical advice, or automated fit scoring. #### Silver Vault Perfume Theme Product page: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme Technical specification: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme/spec ##### How many Shopify stores can I use this theme on? One purchase licenses the theme for one production Shopify store. You may use development, preview, staging, and backup copies solely to build and maintain that same licensed store. ##### What about the free Perfume Starter? Perfume Starter is a separate, smaller free edition with core perfume styling and a reduced specialist surface. See the Silver Vault store for availability and the public edition comparison at the full Perfume Theme technical specification (#edition-comparison). #### Perfume Starter Theme Product page: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme-starter Technical specification: https://silvervaultproject.co.uk/store/products/shopify-perfume-theme-starter/spec ##### How many Shopify stores can I use this theme on? One free download licenses the theme for one production Shopify store. You may use development, preview, staging, and backup copies solely to build and maintain that same licensed store. ##### How is this different from the full Perfume Edition? The Starter includes core perfume styling, scent-note cards, and scent-pyramid blocks. The full edition adds discovery-set merchandising, fragrance-profile meters, extended homepage compositions, and advanced catalogue guidance. ##### Is this a trial or demo theme? No. It is a complete, uploadable theme with correct commerce, accessibility, and resilience. Upgrade when the full edition specialist features justify the cost. ### Is Shopify App Starter available yet? Shopify App Starter is listed as Coming soon on Silver Vault Project (https://silvervaultproject.co.uk/store/products/shopify-app-starter). It is not yet available for checkout or download. Planned price: Coming soon. Start a Shopify app from a current TypeScript foundation instead of an empty project. ### Is Shopify Webhook Kit available yet? Shopify Webhook Kit is listed as Coming soon on Silver Vault Project (https://silvervaultproject.co.uk/store/products/shopify-webhook-kit). It is not yet available for checkout or download. Planned price: Coming soon. Verified webhook handling so you can trust incoming Shopify events without rebuilding the plumbing. ### Where can I buy Silver Vault App Pricing Kit Lite? Silver Vault App Pricing Kit Lite is available from Silver Vault Project for Free GBP at https://silvervaultproject.co.uk/store/products/app-pricing-kit-lite. Prototype one paid Shopify plan and test access rules before connecting live billing. ### Where can I buy Secure File Upload Pack? Secure File Upload Pack is available from Silver Vault Project for £19 GBP at https://silvervaultproject.co.uk/store/products/secure-file-upload-pack. Add authenticated, private file uploads with server-owned policy, validation, lifecycle states, recovery, and tests beyond a basic presigned S3 example. ### Where can I buy Google Merchant API Migration Kit for Shopify Integrations? Google Merchant API Migration Kit for Shopify Integrations is available from Silver Vault Project for £199 GBP at https://silvervaultproject.co.uk/store/products/google-merchant-api-migration-kit. A tested Shopify migration system for moving from Google Content API to Merchant API—legacy discovery, mappings, bounded execution, cutover evidence, rollback, and AI integration instructions. ### Where can I buy Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations? Walmart Delegated Access to OAuth 2.0 Migration Kit for Shopify Integrations is available from Silver Vault Project for £149 GBP at https://silvervaultproject.co.uk/store/products/walmart-oauth-migration-kit. Replace expiring Walmart Delegated Access credentials with legacy discovery, secure token boundaries, scope verification, and controlled seller-by-seller cutover for custom Shopify integrations. ### Where can I buy Silver Vault Clothing Theme? Silver Vault Clothing Theme is available from Silver Vault Project for £59 GBP at https://silvervaultproject.co.uk/store/products/shopify-clothing-theme. An original, minimal Online Store 2.0 Shopify theme designed for independent clothing and apparel brands. ### Where can I buy Silver Vault Bags Theme? Silver Vault Bags Theme is available from Silver Vault Project for £59 GBP at https://silvervaultproject.co.uk/store/products/shopify-bags-theme. An original, minimal Online Store 2.0 Shopify theme designed for independent bag and leather-goods brands. ### Where can I buy Silver Vault Eyewear Theme? Silver Vault Eyewear Theme is available from Silver Vault Project for £59 GBP at https://silvervaultproject.co.uk/store/products/shopify-eyewear-theme. An original, minimal Online Store 2.0 Shopify theme designed for independent eyewear and optical frame brands. ### Where can I buy Silver Vault Perfume Theme? Silver Vault Perfume Theme is available from Silver Vault Project for £59 GBP at https://silvervaultproject.co.uk/store/products/shopify-perfume-theme. An original, minimal Online Store 2.0 Shopify theme designed for small perfume and fragrance brands. ### Where can I buy Perfume Starter Theme? Perfume Starter Theme is available from Silver Vault Project for Free GBP at https://silvervaultproject.co.uk/store/products/shopify-perfume-theme-starter. A free, complete Shopify Online Store 2.0 theme for perfume and fragrance brands with core scent merchandising. --- ## 7. Contact & Engagement - **Location**: London, UK - **Web**: https://silvervaultproject.co.uk/contact - **Inquiries**: Direct technical engagement — the engineers taking the brief are the engineers who architect, build, and deploy the system.