# Facet UCP Shopping (remote · api.facet.llc)

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

- Trust score: 60/100 (medium)
- Change this week: +2
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `api.facet.llc`: 60/100 (this document), [markdown](https://verifymcp.io/servers/llc-facet-ucp-shopping/ucp-mcp.md), [page](https://verifymcp.io/servers/llc-facet-ucp-shopping/ucp-mcp)

## Channel facts

- Endpoint: `https://api.facet.llc/ucp/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 51/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 9 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 63/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1093 tokens (~121/item across 9 items; 9 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 95/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 85% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http llc-facet-ucp-shopping https://api.facet.llc/ucp/mcp
```

### Codex

```toml
[mcp_servers.llc-facet-ucp-shopping]
url = "https://api.facet.llc/ucp/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "llc-facet-ucp-shopping": {
      "type": "remote",
      "url": "https://api.facet.llc/ucp/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add llc-facet-ucp-shopping --url https://api.facet.llc/ucp/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  llc-facet-ucp-shopping:
    url: "https://api.facet.llc/ucp/mcp"
```

### Other

```json
{
  "mcpServers": {
    "llc-facet-ucp-shopping": {
      "type": "http",
      "url": "https://api.facet.llc/ucp/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 59, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 58, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 58, −2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 59, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 58, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 58)

First indexed and scored.

## MCP tools (9)

### `search_catalog` (~27 tokens)

Search the merchant catalog for products matching a free-text query.

Input parameters:

- `catalog` (object, required)

### `lookup_catalog` (~28 tokens)

Look up one or more products or variants by identifier (batch).

Input parameters:

- `catalog` (object, required)

### `get_product` (~25 tokens)

Get full product detail by product or variant identifier.

Input parameters:

- `catalog` (object, required)

### `discover_businesses` (~229 tokens)

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 talk to. REQUIRES IDENTITY: send a Facet KYA as `Authorization: Bearer <kya>` on the MCP request. A KYA is an ES256 JWT from Facet's default issuer https://issuer.facet.llc (or another issuer this Terminal trusts — see KYA-Issuers in its /.well-known/agents.txt). Calling without one returns 401 with a signup link.

Input parameters:

- `limit` (integer): Max matches to return. Default 10, cap 50.
- `near` (object): Optional geographic center to rank by proximity.
- `query` (string): Free-text query, e.g. "flowers" or "makeup brushes".
- `radius_km` (number): Search radius around `near`, km. Default 25.

### `get_quote` (~225 tokens)

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` ship-to; without one you get FULFILLMENT_REQUIRED. An unserviceable destination returns UNDELIVERABLE (the merchant's own shipping zones, which Facet cannot waive). REQUIRES IDENTITY: send a Facet KYA as `Authorization: Bearer <kya>` (ES256 JWT from https://issuer.facet.llc, or another issuer in this Terminal's agents.txt KYA-Issuers).

Input parameters:

- `fulfillment` (object): Ship-to destination. REQUIRED for physical products.
- `product_id` (string, required): Product or variant id, e.g. from search_catalog.
- `qty` (integer): Quantity. Default 1.
- `site_id` (string): Usually omitted — this Terminal's bound site is used.

### `get_payment_capabilities` (~74 tokens)

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 data.

### `get_payment_requirements` (~316 tokens)

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). Facet never holds your key and cannot sign for you, which is why paying is two steps and not one. The offer binds to the quote_token's sealed landed total and ship-to, so the amount is the merchant's, not one you name. REQUIRES IDENTITY: same Facet KYA as get_quote, and the SAME `aid` — the offer path rejects a quote_token issued to a different agent than the caller.

Input parameters:

- `amount` (object, required): The landed total in ATOMIC units. Must equal the quote_token's sealed total.
- `product_id` (string, required): Must match the product the quote_token sealed.
- `qty` (integer): Must match the quote_token. Default 1.
- `quote_token` (string, required): The signed token from get_quote.
- `rail_id` (string, required): Settlement rail, e.g. "coin/boson-escrow" (escrow: funds release on fulfilment) or "coin/usdc-base". See /v1/payments/capabilities for what this merchant registers.
- `site_id` (string): Usually omitted — this Terminal's bound site is used.

### `get_order` (~89 tokens)

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>`.

Input parameters:

- `order_id` (string, required): The order id returned at payment.

### `list_orders` (~80 tokens)

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>`.

Input parameters:

- `cursor` (string): Opaque cursor from a previous page.
- `limit` (integer): Max orders to return.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/llc-facet-ucp-shopping/ucp-mcp#diagnostics

## Score history

- 2026-08-03: 60
- 2026-08-02: 59
- 2026-08-01: 59
- 2026-07-31: 58
- 2026-07-30: 58
- 2026-07-29: 60
- 2026-07-28: 59
- 2026-07-27: 58
- 2026-07-26: 58

## Links

- Remote endpoint: https://api.facet.llc/ucp/mcp
- Website: https://facet.llc/
- Changelog RSS feed: https://verifymcp.io/servers/llc-facet-ucp-shopping/ucp-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/llc-facet-ucp-shopping/ucp-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/llc-facet-ucp-shopping/ucp-mcp