m2mcent-sdk MCP

An ultra-lightweight x402 payment wrapper for AI Agents and MCP Servers that enables USDC settlements on Base L2. It allows developers to monetize any API or MCP tool endpoint by intercepting requests, requiring payment via EIP-712 signed authorization, and settling atomically on-chain via an escrow contract.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Evozim

You need:npm install m2mcent-sdk

Vendor documentation

What you can do with it

Monetize API endpoints with USDC micropayments
Integrate x402 payment protocol into MCP servers
Settle payments atomically on Base L2
Enable gasless payments for AI agents using EIP-3009

Source and maintenance

Community listingRegistry 1.0.5

mcp-registry: io.github.Evozim/m2mcent@1.0.5 Source repository

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

m2mcent-sdk 1.0.5

npm

m2mcent-sdk package definition

{
  "version": "1.0.5",
  "transport": "stdio",
  "identifier": "m2mcent-sdk",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "BASE_RPC_URL",
      "format": "string",
      "isRequired": true,
      "description": "Base Mainnet RPC endpoint URL"
    },
    {
      "name": "RELAYER_PRIVATE_KEY",
      "format": "string",
      "isRequired": true,
      "description": "Relayer wallet private key for on-chain settlement"
    },
    {
      "name": "TREASURY_ADDRESS",
      "format": "string",
      "isRequired": true,
      "description": "Treasury wallet address to receive payments"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before 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.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "m2mcent-sdk-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "m2mcent-sdk@1.0.5"
      ],
      "env": {
        "BASE_RPC_URL": "<YOUR_BASE_RPC_URL>",
        "RELAYER_PRIVATE_KEY": "<YOUR_RELAYER_PRIVATE_KEY>",
        "TREASURY_ADDRESS": "<YOUR_TREASURY_ADDRESS>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "m2mcent-sdk-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "m2mcent-sdk@1.0.5"
      ],
      "env": {
        "BASE_RPC_URL": "<YOUR_BASE_RPC_URL>",
        "RELAYER_PRIVATE_KEY": "<YOUR_RELAYER_PRIVATE_KEY>",
        "TREASURY_ADDRESS": "<YOUR_TREASURY_ADDRESS>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "m2mcent-sdk-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "m2mcent-sdk@1.0.5"
      ],
      "env": {
        "BASE_RPC_URL": "<YOUR_BASE_RPC_URL>",
        "RELAYER_PRIVATE_KEY": "<YOUR_RELAYER_PRIVATE_KEY>",
        "TREASURY_ADDRESS": "<YOUR_TREASURY_ADDRESS>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "m2mcent-sdk-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "m2mcent-sdk@1.0.5"
      ],
      "env": {
        "BASE_RPC_URL": "<YOUR_BASE_RPC_URL>",
        "RELAYER_PRIVATE_KEY": "<YOUR_RELAYER_PRIVATE_KEY>",
        "TREASURY_ADDRESS": "<YOUR_TREASURY_ADDRESS>"
      }
    }
  }
}

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