# x402-list-mcp

> x402-list-mcp, an MCP server by x402-list.com, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

- Canonical: https://www.anchorterminal.com/tools/x402-list-mcp
- Markdown: https://www.anchorterminal.com/tools/x402-list-mcp.md (~950 tokens)
- Slim: https://www.anchorterminal.com/tools/x402-list-mcp.min.md (~880 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/tools/x402-list-mcp.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-05

# x402-list-mcp

> Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: MCP server, by x402-list.com (https://x402-list.com)
- Category: Observability & incidents (https://www.anchorterminal.com/categories/observability.md)
- Listed because: It's published in the registry under x402-list.com, a namespace the registry only gives to whoever proves they control that domain.
- What the official MCP registry says: Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

## Facts

- MCP registry: `com.x402-list/x402-list-mcp` 0.5.1
- Endpoint: https://mcp.x402-list.com/mcp (streamable HTTP)
- Package: npm `x402-list-mcp` (stdio)
- Source: https://github.com/mcccsm/x402-list-mcp
- Website: https://x402-list.com
- npm downloads a week: 84
- GitHub stars: 26
- Registry entry updated: 2026-09-01

## Tools

- Tools it lists (7, about 3,743 tokens of context, `tools/list` without credentials over MCP 2025-11-25, checked 2026-10-04 22:24 UTC):
  - `x402_search_services` (read-only): Your first call when you do not know which x402 service exists for a job: it narrows a directory of 500+ listed services to candidates. Filter by free-text…
  - `x402_get_service` (read-only): Call this once you hold a slug and are deciding whether to commit to that service: the full record behind a directory row. Live status, uptime over…
  - `x402_find_best_service` (read-only): Call this when you have a need in words and want one service to call rather than a list to read: it is the free ranking step between searching and paying. Pass…
  - `x402_check_health` (read-only): Call this before you send a payment, or right after a call unexpectedly failed: is this service up right now. With no slug, the directory snapshot: five status…
  - `x402_facilitator_volumes` (read-only): Call this when the question is about the rail rather than the service: which x402 facilitator actually settles money, and how much. Returns on-chain-verified…
  - `x402_assess_services` (writes): Call this when the free signals have run out: you hold 2 to 8 finalists from x402_search_services or x402_find_best_service, their stored fields do not…
  - `x402_change_events` (read-only): Call this before you trust anything you cached about a service, and right after a payment failed for no obvious reason: the monitor's log of what moved under…
- How its tools read to an agent (0 errors, 1 warning, 1 note, about 3,743 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):
  - warn TC11 x402_facilitator_volumes: 2 parameters without a description: page, per_page
  - note TC24 server: 7 of 7 tools have no outputSchema

- JSON: https://www.anchorterminal.com/api/v1/tools/x402-list-mcp.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming