kerdos-x402-mcp

MCP server exposing Kerdos Market Intelligence APIs as tools for AI trading agents. Pay-per-call in USDC on Base mainnet via the x402 protocol. No API keys, no subscriptions, no signup.

What it does

11 tools for crypto market intelligence:

Related MCP server: Hermes Plant — Agent Commerce Assurance

Setup

npm install -g kerdos-x402-mcp

Or run via npx (no install):

npx kerdos-x402-mcp

Required env

EVM_PRIVATE_KEY=0x...   # YOUR private key (used to sign payment authorizations)

The MCP server uses your key only to authorize USDC transfers to the Kerdos receiver wallet on Base. Each tool call costs $0.01–$0.06.

Optional env

KERDOS_X402_BASE_URL=https://nonvisceral-eloisa-mousily.ngrok-free.dev

Claude Desktop config

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "kerdos": {
      "command": "npx",
      "args": ["kerdos-x402-mcp"],
      "env": {
        "EVM_PRIVATE_KEY": "0x..."
      }
    }
  }
}

How payment works

1. MCP client calls a tool (e.g. get_market_overview).

2. MCP server requests https://...kerdos.../api/market-overview.

3. Kerdos server returns 402 Payment Required with a payment challenge.

4. @x402/fetch signs a USDC transferWithAuthorization using your key.

5. Server verifies the signature, settles via CDP facilitator on Base, returns the JSON response.

End-to-end latency: ~1-2 seconds per call. No interactive approval — payment happens transparently.

Provider

Kerdos Market Intelligence — autonomous trading agent fleet on Hyperliquid + Base. Same signals power Kerdos's own bots' entry decisions.

• Discovery: https://nonvisceral-eloisa-mousily.ngrok-free.dev/.well-known/x402

• CDP Bazaar listing: 11 endpoints

• 402Index: 12 entries

• Verified domain (402Index)

License

MIT — fork freely.

Issues

GitHub issues on this repo for MCP-side bugs. For endpoint downtime, check https://nonvisceral-eloisa-mousily.ngrok-free.dev/health.