# Counterparty Check

> Check a payee before your agent pays: sanctions, lookalike domains, payment details, invoice fraud.

- name: io.github.chtwebllc/counterparty-check
- version: 1.0.1
- connection class: R1 (autonomous)
- trust: 80/100 flags: no-repository
- quality: 81/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.chtwebllc%2Fcounterparty-check
- tools: https://api.protogrid.dev/v1/servers/io.github.chtwebllc%2Fcounterparty-check/tools

**An agent can connect on its own if it already holds `COUNTERPARTY_CHECK_TOKEN`.** Remote endpoint behind a static API key or header. The registry never sees the value; the agent fills the placeholder.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "counterparty-check": {
      "type": "http",
      "url": "https://counterpartycheck.com/mcp",
      "headers": {
        "Authorization": "Bearer ${COUNTERPARTY_CHECK_TOKEN}"
      }
    }
  }
}
```

Placeholders to fill: `${COUNTERPARTY_CHECK_TOKEN}`.

## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 45
- drivers: +website +reachable +uptime-100% +updated-4d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 81/100 (new)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 86 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 4 of 4 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: verify_receipt (destructiveHint, idempotentHint, openWorldHint); check_counterparty (destructiveHint, idempotentHint); check_balance (destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,421 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 4 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 4, about 1,421 tokens to load them all
- tool set hash: d75f785f51b392ca7e8cffba4f811e34
- tools last changed: 2026-10-17T19:28:13.131Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.chtwebllc/counterparty-check.svg)](https://protogrid.dev/servers/io.github.chtwebllc/counterparty-check)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-17 `screen_sanctions` changed (description)
  - before: Screen a payee name (and optional crypto wallet) against OFAC sanctions lists and embargoed jurisdictions. Faster and cheaper than check_counterparty but does not detect fraud patterns. Costs $0.05.
  - after: Screen a payee name (and optional crypto wallet) against OFAC sanctions lists and embargoed jurisdictions. Faster and cheaper than check_counterparty but does not detect fraud patterns. Costs $0.05 from the API key balance; without a key, the first 3 screens each day are free.

Full history: https://api.protogrid.dev/v1/servers/io.github.chtwebllc%2Fcounterparty-check/changes

## Remotes

- https://counterpartycheck.com/mcp (streamable-http, auth api_key ${COUNTERPARTY_CHECK_TOKEN}, reachable true, uptime30d 1)

## Packages

_none_

## Tools (4)

- `check_balance`: Show the remaining prepaid balance on the API key used for this connection. Free.
- `check_counterparty`: Run a full pre-payment risk check on a payee: OFAC sanctions (names and wallets), domain age and email authentication, lookalike domains (vendor impersonation, brand typo-squats, executive impersonation), routing/IBAN/SWIFT/wallet validation, and business-email-compromise signals. Returns verdict proceed/review/block, a 0-100 risk score, explained findings, and a signed receipt. Costs $0.25 from the API key balance. Fill in "context" with everything you know about how the payment request arrived; it materially improves fraud detection.
- `screen_sanctions`: Screen a payee name (and optional crypto wallet) against OFAC sanctions lists and embargoed jurisdictions. Faster and cheaper than check_counterparty but does not detect fraud patterns. Costs $0.05 from the API key balance; without a key, the first 3 screens each day are free.
- `verify_receipt`: Confirm that a receipt returned by a previous check is authentic and unaltered. Free.