MPP32

The payment layer for AI agents. One install. Pay any x402 endpoint on Solana or Base from your agent. Browse a federated index of thousands of machine payable APIs without a single provider account.

Why this exists

Most agent stacks stop at "the model can call a function." That works until the function costs money. The moment your agent needs premium data, a paid model, a trading signal, or a token analytics call, you are back to building accounts, storing API keys, watching budgets, and writing custom 402 handlers for every provider.

MPP32 replaces all of that. Your agent asks for a service by name. The proxy finds it in a federated catalog of thousands of machine payable APIs, signs payment with a key on your own machine, and returns the data. You write zero billing code. You manage zero provider accounts. Settlement lands on chain in seconds. MPP32 never touches the money.

What an agent gains the moment it connects

• A live catalog of over 4,500 paid and free APIs across token intelligence, market data, web search, image generation, embeddings, DeFi analytics, wallet scoring, on chain queries, trading signals, and more.
• Automatic x402 payment on Solana (USDC) and Base (USDC), picked per call based on which signing key you configured.
• Real time Solana token intelligence with alpha scoring, rug risk, whale flow, smart money signals, and 24 hour pump probability.
• A dashboard at mpp32.org that tracks every call, every dollar settled, every protocol used, every latency reading.
• End to end audit. Every settlement comes back with an on chain signature you can verify on Solscan or Basescan.

Payment rails

The proxy implements every envelope and verifies challenges in tests, but only x402 has a tested end to end client flow in this MCP today. The other rails light up as their signers ship.

Install

The MCP server is on npm and listed in the official Model Context Protocol registry.

npx -y mpp32-mcp-server@latest

Drop this into the MCP servers section of Claude Desktop, Claude Code, Cursor, Windsurf, or any MCP compatible client.

{
  "mcpServers": {
    "mpp32": {
      "command": "npx",
      "args": ["-y", "mpp32-mcp-server@latest"],
      "env": {
        "MPP32_AGENT_KEY": "mpp32_agent_…",
        "MPP32_SOLANA_PRIVATE_KEY": "<your base58 Solana secret key>"
      }
    }
  }
}

MPP32_SOLANA_PRIVATE_KEY is the base58 encoded 64 byte Solana secret key — the value Phantom exports under show private key, not the seed phrase. From a keypair.json file run node -e "console.log(require('bs58').encode(Buffer.from(JSON.parse(require('fs').readFileSync('keypair.json')))))" once and paste the result.

The wallet needs both USDC (for the payment) and a small amount of native SOL (for transaction fees). About 0.001 SOL covers many calls. A USDC only wallet returns insufficient funds for rent.

Get a

... View full README on GitHub