Axiom Relay MCP MCP server

A stateless remote MCP server providing free, public discovery and inspection capabilities from Axiom's canonical registry. It allows agents to search service directories, inspect OpenAPI contracts, use the Concierge assistant, and verify receipts without requiring an API key or account.

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 Axiom Relay

MCP endpoint (Streamable HTTP)

https://axiomrelay.io/mcp/discovery

Vendor documentation

What you can do with it

Find Axiom services that work with JSON and show their current contracts
Use API Doctor to check an OpenAPI JSON and explain what to fix
Inspect a service's input schema before connecting it
Check an OpenAPI document from any client supporting remote Streamable HTTP MCP

Tools advertised by the last live check:

get_axiom_capabilities
get_axiom_capability
search_directory
get_directory_entry
find_paid_service
compareServices
listRooms
verify_receipt
axiom_concierge_answer
axiom_api_doctor

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 axiom-relay-mcp https://axiomrelay.io/mcp/discovery

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 axiom-relay-mcp --url https://axiomrelay.io/mcp/discovery

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "axiom-relay-mcp": {
      "url": "https://axiomrelay.io/mcp/discovery"
    }
  }
}

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": {
    "axiom-relay-mcp": {
      "type": "streamableHttp",
      "url": "https://axiomrelay.io/mcp/discovery",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "axiom-relay-mcp": {
      "type": "http",
      "url": "https://axiomrelay.io/mcp/discovery"
    }
  }
}

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 axiom-relay-mcp https://axiomrelay.io/mcp/discovery

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": {
    "axiom-relay-mcp": {
      "url": "https://axiomrelay.io/mcp/discovery"
    }
  }
}

Windsurf

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

Windsurf configuration

{
  "mcpServers": {
    "axiom-relay-mcp": {
      "serverUrl": "https://axiomrelay.io/mcp/discovery"
    }
  }
}

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