y0exchange/mcp

@y0exchange/mcp

Let AI agents trade crypto. Non-custodial. Multi-chain. One MCP server.

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What is this?

@y0exchange/mcp is a Model Context Protocol server that gives AI agents real-time access to DeFi — balances, prices, gas, swap quotes, transaction history, and the ability to execute swaps and transfers.

Connect it to Claude, ChatGPT, or any MCP-compatible AI client. Your users talk to AI, AI talks to the blockchain.

User  →  AI Agent  →  @y0exchange/mcp  →  Blockchain
                            ↓
                     y0 Signing Service (user signs on their device)

Non-custodial by design. y0 never touches private keys. Write operations build unsigned transactions — the user always signs on their own device.

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Quick Start

1. Get your API key

Sign in at app.y0.exchange → API Keys → copy your key.

2. Add connector (recommended)

The simplest way — works on Claude Desktop, claude.ai, Claude Mobile, and ChatGPT:

1. Open your AI app → Settings → Connectors → Add custom connector
2. Name: y0
3. URL: https://mcp.y0.exchange/mcp?key=YOUR_API_KEY
4. Save — done!

No installs, no config files, no terminal. The API key links to your wallet — the AI agent automatically knows your address and permissions.

For developer IDEs (Cursor, Windsurf)

Add to your MCP config (e.g. .cursor/mcp.json):

{
  "mcpServers": {
    "y0": {
      "command": "npx",
      "args": ["-y", "@y0exchange/mcp"],
      "env": {
        "Y0_API_KEY": "y0_your_api_key_here"
      }
    }
  }
}

Claude Code

claude mcp add --transport http y0 https://mcp.y0.exchange/mcp?key=YOUR_API_KEY

Any MCP client (stdio)

Y0_API_KEY=y0_... npx @y0exchange/mcp

The server communicates over stdio — compatible with any MCP client.

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