402 Index MCP Server

by ryanthegentry

270 downloads

Not rated

GitHub

Other
API

About

MCP server for 402 Index: discover 15,000+ paid API endpoints across the L402, x402, and MPP protocols

Details

Author: ryanthegentry
Downloads: 270
Categories: Other, API

- Search over 15,000 paid API endpoints by keyword, protocol, category, and health status.
- Retrieve full service details including health history, latency, pricing, and payment verification.
- Browse all API categories with per‑protocol endpoint counts.
- Directory‑wide health stats, protocol breakdown, and sync timestamps.
- Every endpoint is health‑checked hourly with latency and reliability scoring.

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name 402 Index MCP Server

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

From the repository

Install and run the server via npx @402index/mcp-server. Add it to Claude Desktop, Claude Code, or Cursor by placing the command in the respective configuration file (e.g., claude_desktop_config.json or .cursor/mcp.json). No API key is required. Optionally set the INDEX_URL environment variable to point to a different base URL.

`search_services`

Search and filter paid API services in the 402 Index directory. Returns services with health status, pricing, and protocol info. Includes `related_protocols` array showing other payment rails for the same URL.

`get_service_detail`

Get full details for a single service including health check history, pricing, and schema information. Includes `related_services` array with sibling payment rail details.

`list_categories`

List all service categories with counts. Example: "What categories of paid APIs are available?"

`get_directory_stats`

Get overall directory health and stats: total services, breakdown by protocol/health/source, and sync timestamps. Example: "How many services are in the directory?"

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "402 index mcp server": {
            "402index": {
                "command": "npx",
                "args": [
                    "@402index/mcp-server"
                ]
            }
        }
    }
}

McpServers

{
    "402index": {
        "command": "npx",
        "args": [
            "@402index/mcp-server"
        ]
    }
}

402 Index MCP Server

> Search 15,000+ paid API endpoints across L402, x402, and MPP protocols with real-time health monitoring.

The 402 Index is the world's largest directory of paid API endpoints for AI agents. This MCP server gives your agent access to search, filter, and evaluate paid APIs before spending money.

Quick Start

npx @402index/mcp-server

Installation

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "402index": {
      "command": "npx",
      "args": ["@402index/mcp-server"]
    }
  }
}

Claude Code

claude mcp add 402index -- npx @402index/mcp-server

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "402index": {
      "command": "npx",
      "args": ["@402index/mcp-server"]
    }
  }
}

Tools

| Tool | Description |
|------|-------------|
| search_services | Search 15,000+ paid APIs by keyword, protocol (L402/x402/MPP), category, health status, price, and more |
| get_service_detail | Full details for a service including health history, latency, pricing, and payment verification |
| list_categories | Browse all API categories with per-protocol endpoint counts |
| get_directory_stats | Directory-wide health stats, protocol breakdown, and sync timestamps |

What Can Your Agent Discover?

- L402 (Lightning) — Self-custodial Bitcoin micropayments. 477 endpoints from providers like mutinynet faucet, sats4ai, LightningEnable.
- x402 (Coinbase/Solana) — USDC stablecoin payments on Base/Solana. 14,478 endpoints from Bazaar, Satring, Sponge.
- MPP (Stripe/Tempo) — Fiat-native machine payments. 488 endpoints from OpenAI, Anthropic, Google Gemini, Firecrawl, Replicate.

Every endpoint is health-checked hourly with latency measurements and reliability scoring.

Example Prompts

- "Find healthy L402 APIs for weather data under $0.01"
- "What paid inference APIs are available and which have the best uptime?"
- "Show me all podcast-related paid APIs"
- "Which API categories have the most endpoints?"
- "Get details on the sats4ai image generation endpoint"

Environment Variables

| Variable | Default | Description |
|----------|---------|-------------|
| INDEX_URL | https://402index.io | Base URL of the 402 Index API |

Links

- Website: https://402index.io
- API Docs: https://402index.io/api-docs
- OpenAPI Spec: https://402index.io/api/v1/openapi.json
- llms.txt: https://402index.io/llms.txt
- npm: https://www.npmjs.com/package/@402index/mcp-server

License

MIT

No reviews yet — be the first

Use Google, GitHub, or an email account so ratings stay tied to real people.

Email sign in

No reviews posted yet.

About

Details

Jump to

Setting up with Highlight

From the repository

search_services

get_service_detail

list_categories

get_directory_stats

Claude Desktop / Cursor

McpServers

402 Index MCP Server

Quick Start

Installation

Claude Desktop

Claude Code

Cursor

Tools

What Can Your Agent Discover?

Example Prompts

Environment Variables

Links

License

Install

More like this

Sequential Thinking

Filesystem

EverArt

Google Drive

GitLab

Reactive Resume

`search_services`

`get_service_detail`

`list_categories`

`get_directory_stats`