402index

io.github.ryanthegentryPublished by GitHub account ryanthegentryv0.3.0Updated Oct 24, 2026

Search 15,000+ paid API endpoints across the L402, x402, and MPP protocols on 402index.io

VerifiedSTDIODesktop onlyWeb Search & ScrapingBusiness & Commerce

Overview

AI-generated overview

A local MCP server that lets an assistant search and inspect a directory of paid API endpoints across the L402, x402 and MPP protocols.

What you can do
Search and filter paid API services by protocol, category, health and price, and open full details for a single service including its health check history. List all directory categories with service counts. Read directory-level health, totals and sync timestamps.
When to use it
Useful when you want an assistant to find a paid API for a task, compare endpoints by protocol, price or health, or check what the directory currently contains before wiring a service into a workflow.
Requirements
Runs as a local Node.js process installed from the npm package and built before use. It calls the 402 Index API; the base URL is set with the INDEX_URL environment variable and defaults to the public directory. Network access is needed.
Before you install
The server only reads directory data, but the endpoints it lists are paid services, so acting on a result may involve spending money. Queries are sent to the configured index host, which can be changed via INDEX_URL.

Installation

In SourceWeft

  1. Open 402index in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

402 Index MCP Server

MCP server for AI agent service discovery via the 402 Index directory.

Tools

ToolDescription
search_servicesSearch/filter paid API services (protocol, category, health, price, etc.)
get_service_detailGet full details for a single service including health check history
list_categoriesList all categories with service counts
get_directory_statsDirectory health, totals, sync timestamps

Setup

bash
cd mcp-servernpm installnpm run build

Configuration

Claude Desktop

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

json
{  "mcpServers": {    "402index": {      "command": "node",      "args": ["/path/to/402index/mcp-server/dist/index.js"],      "env": {        "INDEX_URL": "https://402index.io"      }    }  }}

Claude Code

Add to .claude/settings.json or run:

bash
claude mcp add 402index node /path/to/402index/mcp-server/dist/index.js

Cursor

Add to .cursor/mcp.json:

json
{  "mcpServers": {    "402index": {      "command": "node",      "args": ["/path/to/402index/mcp-server/dist/index.js"]    }  }}

Environment Variables

VariableDefaultDescription
INDEX_URLhttps://402index.ioBase URL of the 402 Index API

Example Prompts

  • "Find healthy L402 weather APIs under $0.01"
  • "What categories of paid APIs are available?"
  • "Show me details for service 42"
  • "How many services are in the directory?"

Source: mcp-server/README.md at commit f6547ba

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v0.3.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts