generated: '2026-09-02'
method: probed
status: published
source: >-
  Live MCP handshake against https://mcp.x402-list.com/mcp on 2026-09-02:
  initialize (HTTP 200, Streamable HTTP / text-event-stream, mcp-session-id
  issued) followed by tools/list (HTTP 200) with no credentials. Server identity
  and tool list are the server's own response, saved verbatim to
  x402-list-api-mcp-tools.json. Local stdio variant confirmed on npm
  (registry.npmjs.org/x402-list-mcp) and at github.com/mcccsm/x402-list-mcp, and
  documented at https://x402-list.com/api and in https://x402-list.com/llms.txt.
description: >-
  x402 List ships a first-party MCP server in both shapes: a hosted Streamable
  HTTP endpoint at https://mcp.x402-list.com/mcp that answers tools/list
  anonymously, and a local stdio build published to npm as x402-list-mcp. Seven
  tools: six read-only wrappers over the public REST directory, plus one paid
  tool (x402_assess_services) that charges $0.25 USDC on Base via x402. The paid
  tool takes the caller's own x402 payment signature as a tool argument — the
  server states it holds no keys — so there is no OAuth or API-key layer on the
  server at all.
server:
  name: x402-list-mcp
  version: 0.5.1
  transport: streamable-http
  url: https://mcp.x402-list.com/mcp
  auth: none
  protocol_version: '2025-06-18'
  capabilities:
    tools:
      listChanged: true
  instructions_excerpt: >-
    "x402-list is the directory of services that accept x402 payments: more than
    500 listed and live-monitored, plus on-chain-verified settlement volume per
    facilitator... When the free ranking cannot decide, x402_assess_services buys
    a fresh AI comparison of a shortlist for $0.25 USDC on Base, signed by your
    own wallet: this server holds no keys."
local:
  name: x402-list-mcp
  transport: stdio
  install: npx -y x402-list-mcp
  registry: npm
  package: https://www.npmjs.com/package/x402-list-mcp
  source: https://github.com/mcccsm/x402-list-mcp
  version: 0.5.1
  published: '2026-09-01'
  license: MIT
client_config_example: |
  {
    "mcpServers": {
      "x402-list": {
        "command": "npx",
        "args": ["-y", "x402-list-mcp"]
      }
    }
  }
tools:
  - name: x402_search_services
    paid: false
    parameters: [q, category, network, status, verified_only, signable, sort, page, per_page, fields]
    description: >-
      First call when you do not know which x402 service exists for a job:
      narrows a directory of 500+ listed services.
  - name: x402_get_service
    paid: false
    parameters: [slug, include_series]
    description: >-
      The full record behind a directory row, once you hold a slug and are
      deciding whether to commit to that service.
  - name: x402_find_best_service
    paid: false
    parameters: [q, category, network, max_price_usd, require_verified, prefer, limit, include_facilitator_context]
    description: >-
      Free deterministic ranking: turns a need stated in words into one service
      to call rather than a list to read.
  - name: x402_check_health
    paid: false
    parameters: [slug, uptime_period, include_services]
    description: >-
      Is this service up right now — call before sending a payment, or right
      after a call unexpectedly failed.
  - name: x402_facilitator_volumes
    paid: false
    parameters: [timeframe, days, include_chains, include_timeseries, page, per_page]
    description: >-
      Which x402 facilitator actually settles money, measured on-chain rather
      than self-reported.
  - name: x402_assess_services
    paid: true
    price: 0.25 USDC on Base (x402)
    parameters: [services, question, probe, payment_signature_b64]
    description: >-
      Fresh AI comparison of 2-8 finalists for a stated need, when the free
      signals have run out. Caller signs the payment with their own wallet.
  - name: x402_change_events
    paid: false
    parameters: [service, type, days, page, per_page]
    description: >-
      payTo rotations, price moves and schema drift observed on the x402 wire —
      check before trusting anything cached about a service.
tool_count: 7
paid_tool_count: 1
deployment:
  mode: both
  endpoint: https://mcp.x402-list.com/mcp
  install: npx -y x402-list-mcp
  package: https://www.npmjs.com/package/x402-list-mcp
  auth: none
  verified: probed