mcpField
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402 Index MCP Server

402 Index MCP Server

Local
github.com/ryanthegentrySearch3Updated 27w ago
Repository

About 402 Index MCP Server

An archived source repository for the 402 Index MCP server, which helps agents discover paid API endpoints across L402, x402, and MPP. Releases from 0.3.0 onward are maintained in the 402index monorepo.

Key features

  1. 01Discovery of paid API endpoints
  2. 02Coverage of L402, x402, and MPP protocols
  3. 03Historical source for versions 0.1.0–0.2.5

Use cases

  1. 01Finding paid APIs that use L402
  2. 02Exploring APIs across x402 and MPP
  3. 03Referencing earlier server versions

MCP support

The project is an MCP server for discovering paid API endpoints. Current releases are maintained in the 402index monorepo.

#lightning#bitcoin#mcp#mpp#api-discovery#l402#paid-api#model-context-protocol#mcp-server#x402#agentic-commerce#agent-commerce#agentic-payments#agent-payments#base#tempo#solana

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "402index": {
      "command": "npx",
      "args": [
        "-y",
        "@402index/mcp-server"
      ]
    }
  }
}
Run commandnpx -y @402index/mcp-server

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npm@402index/mcp-server

Tools

4

Saved tool list · updated 3w ago

ParameterTypeRequiredDescription
protocolenumNoFilter by payment protocolL402 | x402 | MPP
categorystringNoFilter by category (prefix match — "crypto" matches "crypto/nft")
healthenumNoFilter by health statushealthy | degraded | down | unknown
sourceenumNoFilter by sourcebazaar | satring | l402apps | sponge | l402directory | mpp | discovery | self-registered
featuredbooleanNoOnly featured services
verifiedbooleanNoOnly payment-verified services (x402: valid payment headers, L402/MPP: healthy). Domain-verified ranked first. Recommended for agents making payment decisions.
qstringNoSearch by name, description, or URL
max_price_usdnumberNoMaximum price in USD
sortenumNoSort fieldname | price | latency | uptime
orderenumNoSort orderasc | desc
limitnumberNoResults per page (default 10, max 200)
offsetnumberNoPagination offset
fieldsstringNoComma-separated fields (default: name,url,protocol,price_sats,health_status). Use * for all fields.
formatenumNoResponse format (default: json). CSV reduces token usage by ~29% for tabular data.json | csv

Details

From the project README

@402index/mcp-server (archived source)

This repository has been consolidated into the 402index monorepo.

Current source of truth: ryanthegentry/402index/tree/master/mcp-server

npm: @402index/mcp-server

All releases ≥0.3.0 ship from the monorepo. Historical tags and source for 0.1.0–0.2.5 remain here for reference; npm tarballs for those versions reference this repository's commit SHAs.

For issues, PRs, or contributions, open them against ryanthegentry/402index instead.

Comments

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