# MPP32 MCP Server (MCP server)

> MPP32 MCP Server is an MCP server that adds finance tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Payment layer for AI agents. One MCP, five protocols, thousands of paid APIs your agent can call. It has 221 GitHub stars, is released under the MIT license and runs locally with npx -y mpp32-mcp-server.

One install. Pay any x402 endpoint on Solana from your agent. Browse a federated index of thousands of machine payable APIs without setting up a single provider account.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/MPP32/MPP32 |
| GitHub stars | 221 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: mpp32-mcp-server |
| Remote URL | none |
| Needs API key | yes |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Finance |
| Latest release | v1.0.0 (Apr 5, 2026) |
| Last commit | Aug 4, 2026 |
| MCP registry name | io.github.MPP32/mpp32-mcp-server |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "mpp32-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "mpp32-mcp-server"
      ],
      "env": {
        "MPP32_AGENT_KEY": "your-value",
        "MPP32_SOLANA_PRIVATE_KEY": "your-value",
        "MPP32_PRIVATE_KEY": "your-value"
      }
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --env MPP32_AGENT_KEY=your-value --env MPP32_SOLANA_PRIVATE_KEY=your-value --env MPP32_PRIVATE_KEY=your-value --transport stdio mpp32-mcp-server -- npx -y mpp32-mcp-server
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "mpp32-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mpp32-mcp-server"
      ],
      "env": {
        "MPP32_AGENT_KEY": "your-value",
        "MPP32_SOLANA_PRIVATE_KEY": "your-value",
        "MPP32_PRIVATE_KEY": "your-value"
      }
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "inputs": [
    {
      "type": "promptString",
      "id": "mpp32_agent_key",
      "description": "MPP32_AGENT_KEY",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mpp32_solana_private_key",
      "description": "MPP32_SOLANA_PRIVATE_KEY",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mpp32_private_key",
      "description": "MPP32_PRIVATE_KEY",
      "password": true
    }
  ],
  "servers": {
    "mpp32-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mpp32-mcp-server"
      ],
      "env": {
        "MPP32_AGENT_KEY": "${input:mpp32_agent_key}",
        "MPP32_SOLANA_PRIVATE_KEY": "${input:mpp32_solana_private_key}",
        "MPP32_PRIVATE_KEY": "${input:mpp32_private_key}"
      }
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

## Environment variables

- `MPP32_AGENT_KEY` (secret): Session key from https://mpp32.org/agent-console. Unlocks the full federated catalog and attributes every call to your dashboard. Optional in legacy mode…
- `MPP32_SOLANA_PRIVATE_KEY` (secret): Solana private key used to sign x402 USDC payments locally. Only needed when calling paid services that prefer x402. Stays on your machine, never sent to…
- `MPP32_PRIVATE_KEY` (secret): Ethereum L2 private key used to sign Tempo pathUSD payments locally. Optional fallback for paid services when x402 is not available. Stays on your machine…
- `MPP32_API_URL`: Override the API base URL for custom deployments. Defaults to https://mpp32.org.

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