# CounterpartyCheck (remote · api.youraitools.co)

Pre-payment check for EVM/Solana addresses: ok/caution/block with reasons. By Crypto Money Maker

- Trust score: 69/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-22

## Components

- remote · `api.youraitools.co`: 69/100 (this document), [markdown](https://verifymcp.io/servers/co-youraitools-counterpartycheck/counterpartycheck-mcp.md), [page](https://verifymcp.io/servers/co-youraitools-counterpartycheck/counterpartycheck-mcp)
- npm · `@agentgate-builder/counterpartycheck`: 63/100, [markdown](https://verifymcp.io/servers/co-youraitools-counterpartycheck/agentgate-builder-counterpartycheck.md), [page](https://verifymcp.io/servers/co-youraitools-counterpartycheck/agentgate-builder-counterpartycheck)

## Channel facts

- Endpoint: `https://api.youraitools.co/counterpartycheck/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.1`

## 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 2026-10-22.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - 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**: 66/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 270 tokens (~270/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 1 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the CounterpartyCheck MCP server?

CounterpartyCheck is a hosted endpoint at https://api.youraitools.co/counterpartycheck/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http co-youraitools-counterpartycheck 'https://api.youraitools.co/counterpartycheck/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "co-youraitools-counterpartycheck": {
      "url": "https://api.youraitools.co/counterpartycheck/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "co-youraitools-counterpartycheck": {
      "type": "http",
      "url": "https://api.youraitools.co/counterpartycheck/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.co-youraitools-counterpartycheck]
url = "https://api.youraitools.co/counterpartycheck/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "co-youraitools-counterpartycheck": {
      "type": "remote",
      "url": "https://api.youraitools.co/counterpartycheck/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add co-youraitools-counterpartycheck --url 'https://api.youraitools.co/counterpartycheck/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  co-youraitools-counterpartycheck:
    url: "https://api.youraitools.co/counterpartycheck/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "co-youraitools-counterpartycheck": {
      "Transport": "http",
      "Url": "https://api.youraitools.co/counterpartycheck/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add co-youraitools-counterpartycheck -t streamable-http -u 'https://api.youraitools.co/counterpartycheck/mcp'
```

### Other

```json
{
  "mcpServers": {
    "co-youraitools-counterpartycheck": {
      "type": "http",
      "url": "https://api.youraitools.co/counterpartycheck/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.

### 2026-10-22 (score 69)

First indexed and scored.

## MCP tools (1)

### `check_counterparty` (~225 tokens)

Is it safe to pay this address?

Pre-payment counterparty check: before paying, approving or interacting with an EVM (Base, Ethereum, Polygon, Arbitrum One) or Solana address, get ok / caution / block. Free preview tier: verdict, confidence, address kind and flag counts. The paid x402 endpoints /v1/lite ($0.005), /v1/quick ($0.015) and /v1/full ($0.05) add the reasons and evidence (OFAC SDN, scam lists, x402 directory, verification, deployer, names, cross-chain, age, exposure). Informational safety check, not legal or financial advice.

Input parameters:

- `address` (string, required): Counterparty address: EVM 0x + 40 hex, or a Solana base58 address
- `chain` (string): Chain of the payment (default base; a base58 address implies solana)
- `intent` (string): What you are about to do (default pay): changes which signals matter, e.g. paying a token contract or approving an EOA

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/co-youraitools-counterpartycheck/counterpartycheck-mcp#diagnostics

## Score history

- 2026-10-22: 69

## Common questions

### What is the CounterpartyCheck MCP server?

CounterpartyCheck is an MCP server listed in the public MCP registry as co.youraitools/counterpartycheck. Pre-payment check for EVM/Solana addresses: ok/caution/block with reasons. By Crypto Money Maker. This page covers its hosted endpoint (https://api.youraitools.co/counterpartycheck/mcp).

### Is the CounterpartyCheck MCP server safe to use?

CounterpartyCheck scores 69 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the CounterpartyCheck MCP server expose?

CounterpartyCheck exposes 1 tool: check_counterparty. Their descriptions and schemas cost roughly 225 tokens of context every time the server is loaded.

### Does the CounterpartyCheck MCP server require authentication?

No. We connected to CounterpartyCheck without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the CounterpartyCheck MCP server still maintained?

CounterpartyCheck is still listed as active in the MCP registry. We last reached this channel on 22 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://api.youraitools.co/counterpartycheck/mcp
- Website: https://youraitools.co/
- Changelog RSS feed: https://verifymcp.io/servers/co-youraitools-counterpartycheck/counterpartycheck-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/co-youraitools-counterpartycheck/counterpartycheck-mcp.json
- HTML version of this page: https://verifymcp.io/servers/co-youraitools-counterpartycheck/counterpartycheck-mcp