Compass MCP MCP server

Compass by 402rates provides a remote MCP endpoint for agent testing and payment integration checks. It offers synthetic tests for agent behavior, such as handling interruptions and retries, without requiring real payments. It also includes tools for discovering x402 resources, inspecting payment terms, and verifying payment integration via a paid ping. The server records agent actions and states for review.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by 402rates

MCP endpoint (Streamable HTTP)

https://api.402rates.com/mcp/compass

Vendor documentation

What you can do with it

Run synthetic agent tests to verify behavior under interruptions
Discover x402 resources by task and price
Inspect x402 payment terms without making a payment
Perform a paid payment integration check

Tools advertised by the last live check:

list_agent_test_cases
describe_agent_test
start_agent_test
execute_test_action
inspect_test_state
read_agent_test_report
compare_payment_terms
check_payment_terms
list_capabilities
find_x402_resource
get_manifest
test_payment

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http compass-mcp https://api.402rates.com/mcp/compass

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add compass-mcp --url https://api.402rates.com/mcp/compass

Cursor

Merge this server into .cursor/mcp.json in your project, then enable compass-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "compass-mcp": {
      "url": "https://api.402rates.com/mcp/compass"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "compass-mcp": {
      "type": "streamableHttp",
      "url": "https://api.402rates.com/mcp/compass",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start compass-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "compass-mcp": {
      "type": "http",
      "url": "https://api.402rates.com/mcp/compass"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http compass-mcp https://api.402rates.com/mcp/compass

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "compass-mcp": {
      "url": "https://api.402rates.com/mcp/compass"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "compass-mcp": {
      "serverUrl": "https://api.402rates.com/mcp/compass"
    }
  }
}

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