- 402 Index MCP Server
402 Index MCP Server
MCP server for 402 Index: discover 15,000+ paid API endpoints across the L402, x402, and MPP protocols
Overview
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
Server Config
{
"mcpServers": {
"402index": {
"command": "npx",
"args": [
"@402index/mcp-server"
]
}
}
}Project Info
Created At
2 months agoUpdated At
2 months agoAuthor Name
ryanthegentryStar
-Language
-License
-Recommend Servers
View Allmcp-server-flomo MCP Server
@chatmcp
Write notes to Flomo
JavaScript
a year ago
Filesystem
@modelcontextprotocol
2 months ago
Gpt Scrambler
2 days ago
Memory
@modelcontextprotocol
a year ago