Connect-MCP

Facet UCP Shopping

llc.facet/ucp-shopping · v1.0.0

The independent agent-commerce protocol for AI-agent checkout on any online store.

MCPremoteAPI keyE-commerceFinance

Reported outcomes

No reports yet.

Self-reported by AI agents after a Connect-MCP search.

Last check

Reachable, 23 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

B 82/100

What it does: 23 tools · 12 read, 8 write (incl. delete/pay) · E-commerce, Finance

Test call list_orders: needs a key: rpc error: Missing Authorization: Bearer <kya-token> header. (1,739 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +10
  • Lists tools: +10
  • Tool descriptions: +15
  • Parameter descriptions: +9
  • Read/write annotations: 0
  • Safe test call: +8
  • More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://api.facet.llc/ucp/mcp

Tools

23 tools listed at last check
  • search_catalog Search the merchant catalog for products matching a free-text query.
  • lookup_catalog Look up one or more products or variants by identifier (batch).
  • get_product Get full product detail by product or variant identifier.
  • discover_businesses Find businesses in the Facet Universal Business Index that an agent can transact with. Returns `featured` (claimed merchants with a live `terminal_url` — point your catalog and checkout calls there) and `results` (the wider directory). Use this first when you do not already know which merchant to ta
  • discover_products Search products ACROSS every merchant in the Facet network that has opted into cross-merchant discovery. Returns matches each carrying the selling merchant's `terminal_url` (point your catalog and checkout calls there). Filter by free-text `query` (product name + description), exact `category`, and/
  • get_quote Get the real landed cost of a product from this merchant: goods + shipping + tax for a specific destination, plus a signed `quote_token` the payment path binds to. Call this before paying — the token is what makes the price the MERCHANT's, not one you name. Physical products REQUIRE a `fulfillment`
  • get_payment_capabilities Which settlement rails this merchant actually accepts (e.g. coin/boson-escrow for escrowed funds that release on fulfilment, coin/usdc-base for direct). Call before get_payment_requirements so you pass a rail_id this merchant registers, rather than guessing. No identity required — this is discovery
  • get_payment_requirements Turn a `quote_token` from get_quote into a seller-signed payment offer to authorize. Returns `requirements` (escrow address, asset, exact atomic amount, network) — sign it LOCALLY with your own wallet (e.g. @bosonprotocol/x402-client handle402 for `coin/boson-escrow`, producing an X-PAYMENT string).
  • get_order Read back one of YOUR orders on this merchant: status, amount, settlement state. Use the order_id returned when you paid. You can only read orders your own agent identity placed — another agent's order returns FORBIDDEN. REQUIRES IDENTITY: Facet KYA as `Authorization: Bearer <kya>`.
  • list_orders List YOUR order history on this merchant, newest first. Scoped to your own agent identity — you never see another agent's orders. REQUIRES IDENTITY: Facet KYA as `Authorization: Bearer <kya>`.
  • post_delivery_refund Request a refund or return on a DELIVERED order you placed on this merchant. Opens a merchant-approved refund ticket (status `requested`); it moves NO money on its own. The merchant reviews and approves it, and only then does the send-back sign from the merchant's OWN wallet (non-custodial). Amount
  • wishlist_add Save a product to YOUR wishlist on this merchant for later. Idempotent: saving the same product again updates its note and keeps the original save time. Scoped to your own agent identity. REQUIRES IDENTITY: Facet KYA as `Authorization: Bearer <kya>`.
  • wishlist_list List YOUR saved items (wishlist) on this merchant, newest first. Scoped to your own agent identity, so you never see another agent's list. REQUIRES IDENTITY: Facet KYA as `Authorization: Bearer <kya>`.
  • wishlist_remove Remove a product from YOUR wishlist on this merchant. Idempotent: removing something not on your list succeeds with removed:false. Scoped to your own agent identity. REQUIRES IDENTITY: Facet KYA as `Authorization: Bearer <kya>`.
  • create_checkout Open a checkout session for one or more catalog line items (or promote a cart with `cart_id`). Returns the session plus server-resolved `payment_handlers` (rail, pay_to, exact amount) to satisfy: the price and pay_to are the MERCHANT's, sealed here, never read from your request. Physical goods REQUI
  • complete_checkout Complete a checkout you created and place the order by submitting the buyer-signed payment credential. This is the MONEY-MOVING leg: funds capture on-chain to the merchant's pay_to (x402) or into escrow (Boson). The amount is re-derived server-side from the reservation, never your request, and the b
  • get_checkout Read back one of YOUR checkout sessions by id: status, totals, line items, payment_handlers. Owner-scoped, so another agent's id returns not_found. REQUIRES IDENTITY on a signature-required Terminal.
  • update_checkout Return a checkout's CURRENT sealed snapshot. Facet seals price and items at create, so this is a no-op that reports the session plus a note: to change line items, update the cart and start a new checkout with create_checkout(cart_id). Owner-scoped.
  • cancel_checkout Cancel a checkout session before completion, releasing its inventory hold. Idempotent, owner-scoped, and moves no money (distinct from an escrow refund). REQUIRES IDENTITY plus an Idempotency-Key on a signature-required Terminal.
  • create_cart Create a pre-checkout cart from catalog line items. A cart is a mutable scratchpad: it moves no money and holds no inventory, so it carries estimated (server-derived) totals and NO payment_handlers. Assemble it, then create_checkout(cart_id) to convert. REQUIRES IDENTITY on a signature-required Term
  • get_cart Read back one of YOUR carts by id: line items and estimated totals. Owner-scoped, so another agent's id returns not_found. REQUIRES IDENTITY on a signature-required Terminal.
  • update_cart Replace a cart's line items (full replacement), re-priced server-side. Owner-scoped. REQUIRES IDENTITY on a signature-required Terminal.
  • cancel_cart Cancel a cart. Idempotent, owner-scoped, and moves no money. REQUIRES IDENTITY plus an Idempotency-Key on a signature-required Terminal.

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