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io.github.Evozim/m2mcent

Registre officiel Finance et paiements

x402 payment wrapper for AI Agents and MCP Servers. USDC settlements on Base L2.

Code source Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

NPM package m2mcent-sdk
Claude Code 
claude mcp add m2mcent -e 'BASE_RPC_URL=<BASE_RPC_URL>' -e 'RELAYER_PRIVATE_KEY=<your relayer_private_key>' -e 'TREASURY_ADDRESS=<TREASURY_ADDRESS>' -- npx -y m2mcent-sdk@1.0.5
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "m2mcent": {
            "command": "npx",
            "args": [
                "-y",
                "m2mcent-sdk@1.0.5"
            ],
            "env": {
                "BASE_RPC_URL": "<BASE_RPC_URL>",
                "RELAYER_PRIVATE_KEY": "<your relayer_private_key>",
                "TREASURY_ADDRESS": "<TREASURY_ADDRESS>"
            }
        }
    }
}

Variables d'environnement

  • BASE_RPC_URL obligatoire Base Mainnet RPC endpoint URL
  • RELAYER_PRIVATE_KEY obligatoire secret Relayer wallet private key for on-chain settlement
  • TREASURY_ADDRESS obligatoire Treasury wallet address to receive payments

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. 🛰️ M2MCent SDK — x402 Payment Wrapper for AI Agents
  2. 🚀 Quick Start
  3. 📐 How It Works
  4. ⚙️ Configuration
  5. 🔒 Security
  6. 🌐 Network Details
  7. 🧩 MCP Server Integration
  8. 📊 Ecosystem
  9. 📄 License

🛰️ M2MCent SDK — x402 Payment Wrapper for AI Agents

Ultra-lightweight x402 payment interceptor for AI Agents and MCP Servers. Monetize any API in 3 lines of code.

🚀 Quick Start

npm install m2mcent-sdk
import { X402Handler } from 'm2mcent-sdk';

const x402 = new X402Handler({
  rpcUrl: 'https://mainnet.base.org',
  privateKey: process.env.RELAYER_PRIVATE_KEY!,
  recipient: process.env.TREASURY_ADDRESS!
});

// Protect any Express endpoint with a USDC paywall
app.post('/api/analyze', x402.requirePayment("100000"), (req, res) => {
  res.json({ result: "Premium analysis complete", receipt: req.paymentTx });
});

📐 How It Works

M2MCent implements the x402 Payment Protocol — a machine-native payment standard inspired by HTTP 402:

  1. Agent requests a protected endpoint
  2. Server responds with 402 Payment Required + payment metadata (Base64 encoded)
  3. Agent signs an EIP-712 typed data authorization (gasless for the payer)
  4. Server settles atomically on-chain via the M2MCent Escrow contract
  5. Agent receives the premium response + transaction receipt
Agent ──► API Server ──► 402 + metadata
Agent ◄── signs EIP-712 authorization
Agent ──► API Server + Payment-Signature header
          └──► Escrow.settle() on Base L2
Agent ◄── Premium Response + tx hash

⚙️ Configuration

ParameterDescriptionRequired
rpcUrlBase Mainnet RPC endpoint✅
privateKeyRelayer wallet private key (for settlement)✅
recipientTreasury address to receive payments✅

🔒 Security

  • Non-custodial: Funds flow directly from payer → treasury via on-chain escrow
  • Gasless for payers: Uses EIP-3009 transferWithAuthorization (USDC native)
  • Zero-Leak: No agent data is retained after settlement
  • Atomic: Payment and service delivery happen in a single request cycle

🌐 Network Details

ParameterValue
NetworkBase Mainnet (Chain ID: 8453)
USDC Contract0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Escrow Contract0xf3c3416A843d13C944554A54Ac274BB7fF264BcC
SettlementAtomic, sub-second finality

🧩 MCP Server Integration

Perfect for Model Context Protocol servers:

import express from 'express';
import { X402Handler } from 'm2mcent-sdk';

const app = express();
const x402 = new X402Handler({
  rpcUrl: process.env.BASE_RPC_URL!,
  privateKey: process.env.RELAYER_PRIVATE_KEY!,
  recipient: process.env.TREASURY_ADDRESS!
});

// Any MCP tool endpoint becomes monetizable
app.post('/api/tools/analyze', x402.requirePayment("50000"), async (req, res) => {
  const result = await runMCPTool(req.body);
  res.json({ ...result, paymentTx: req.paymentTx });
});

📊 Ecosystem

M2MCent powers 100+ production MCP servers on Base Mainnet, processing real USDC micro-payments for AI-to-AI commerce.

📄 License

MIT © M2MCent

Questions fréquentes

Qu'est-ce que io.github.Evozim/m2mcent ?

x402 payment wrapper for AI Agents and MCP Servers. USDC settlements on Base L2.

Comment installer io.github.Evozim/m2mcent ?

Il s'exécute sur votre machine. Dans Claude Code : claude mcp add m2mcent -e 'BASE_RPC_URL=<BASE_RPC_URL>' -e 'RELAYER_PRIVATE_KEY=<your relayer_private_key>' -e 'TREASURY_ADDRESS=<TREASURY_ADDRESS>' -- npx -y m2mcent-sdk@1.0.5. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour io.github.Evozim/m2mcent ?

Oui. Il attend BASE_RPC_URL, RELAYER_PRIVATE_KEY, TREASURY_ADDRESS, à renseigner dans sa configuration.

io.github.Evozim/m2mcent est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient io.github.Evozim/m2mcent ?

Il est publié par Evozim. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.