The request is for a merchant catalog acceptance tool, which is a general query about what to use. Sources 2 Agentic Shelf and 4 Shopify Dev Docs cover catalog and commerce access (live catalog tools, product listing, store APIs), while 10 VaultGraph exposes catalog and checkout via MCP. Note that 1 GitHub, 6 Docker and 8 Mailgun do not show catalog acceptance and are left out.
A question back: Which platform or store system does your merchant catalog run on (for example Shopify, WooCommerce or a custom store)?
- 1
Agentic Shelfagenticshelf.aiverified and signed
Provides live MCP tools that list products, return product details and check stock and pricing for a merchant's catalog 12.
official:MCP server · Graffeo Coffee RoastingMCP server · Agentic ShelfMCP server · PuroAir
for agents: list_products · get_product_details · check_stock
- 2
Shopify Dev Docsshopify.devverified and signed
Offers Shopify's Storefront API, Admin API and MCP server for reading and managing a store's product catalog 414.
official:MCP server · @shopify/dev-mcpSDK · @shopify/shopify-apiskill · shopify-liquidskill · shopify-devskill · shopify-custom-data
for agents: Storefront API · rest · Admin API
- 3
VaultGraphvaultgraph.comwebsite read, tools not yet checked
Provides one MCP gateway that exposes a store's catalog, cart, checkout and orders to AI agents 10.
Sources
- 1GitHub · Change is constant. GitHub keeps you ahead. · GitHub · GitHubgithub.com · read 2026-10-29
- 2Agentic Shelf — MCP, audits & agent visibility for commerceagenticshelf.ai · read 2026-10-29
- 4Shopify Dev Docsshopify.dev · read 2026-10-29
- 6Docker | Secure Sandboxes for AI Agentsdocker.com · read 2026-10-29
- 8Transactional Email API Service For Developers - Transactional Email API Service For Developers | Mailgunmailgun.com · read 2026-10-29
- 10VaultGraph - AI shopping for modern brandsvaultgraph.com · read 2026-10-29
- 12Agentic Shelf: declares "list_products" (the record we read and signed)unfragile.ai · read 2026-10-24
- 14@shopify/shopify-api: declares "Storefront API" (the record we read and signed)unfragile.ai · read 2026-10-24
For agents: the 10 actions behind this answer
custom_api_call · GitHub (Activepieces) verified and signed
Custom API Call — Make a custom API call to a specific endpoint
list_products · Agentic Shelf verified and signed
List products from the connected store, paginated. Use this tool when an agent needs to DISCOVER products by browsing the catalog rather than VERIFYING a known SKU. The response includes the SKU for every product, so a follow-up ``check_stock(sku)`` or ``get_product_details(sku)`` i
add-to-cart · UCP Checker found in code, not yet checked
Add a product to cart on any UCP-enabled Shopify store and get a checkout URL. Requires a variant ID from the search-catalog or get-product-details results. Returns the cart contents, checkout URL, and a cart_id token. To build multi-item carts: pass the returned cart_id back on su
Storefront API · @shopify/shopify-api verified and signed
get_catalog_status · mpp found in code, not yet checked
Return MPP catalog source, version, service count, offer count, cache status, cache age, and last successful refresh time.
run_check · AWS SRA Verify MCP Server found in code, not yet checked
Run a security check and return results.
discover_merchants · Coal - Payments for AI agents verified and signed
THE DEFAULT FIRST CALL whenever the user wants to buy, get, fetch, grab, order, purchase, shop for, find, or browse anything (digital goods, ebooks, APIs, prompts, datasets). Returns a Markdown product grid with images, prices, and merchant payout addresses inline — so you can go straight to pay_mer
validate_email · Mailgun (Activepieces) verified and signed
Validate Email — Validate an email address using Mailgun validation service. Requires a Mailgun account with email validation enabled.
validation · Cerberus verified and signed
· VaultGraph website read, tools not yet checked
Make your shop usable by any AI agent. One MCP gateway exposes catalog, cart, checkout, and orders to ChatGPT, Claude, and beyond.
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.