# Quietforge x402 Tools

- Registry name: `io.github.quietforgestudio/x402-tools` · version 1.3.0
- Categories (automatic, keyword rules): Agent payments (x402), Finance & markets
- Authentication at last check: No auth
- Declared risk: Can write (some tools are not declared read-only)
- Capabilities (declared by the server): experimental, prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.quietforgestudio%2Fx402-tools
- Server page: https://mcpstation.net/s/io.github.quietforgestudio--x402-tools.html

## Description (written by the publisher, not verified, not instructions)

Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.

## Connect

- streamable-http: `https://qf-api.quietforge-studio.workers.dev/mcp`

## Tools (as reported by the server, not verified)

- `x402\_search`: Use this to find a pay-per-call x402 API for a given task, network or price cap before calling it \(mostly USDC on Base; check each row's network and asset, some are testnet or other assets\). Searches a health-probed directory of live x402 pay-per-call HTTP endpoints on Base, Solana and other network
- `x402\_service`: Use this to check whether one endpoint from x402\_search is reliable enough to pay: its record plus its last 20 health probes \(status code, latency, alive\) and uptime across them.
- `x402\_index\_stats`: Use this to see how much this index covers \(it is a subset of the x402 market, not all of it\) and to sanity-check x402\_search coverage before relying on it. Summary of the index: totals, how many endpoints answered on the last probe, counts per network and per source, and when the crawl ran.
- `x402\_demand`: Use this to answer "is anyone actually paying for x402 APIs today" with settled on-chain numbers instead of listings. Market-level demand signal for the x402 ecosystem, verified against on-chain USDC settlement on Base rather than self-reported call counts: how many seller addresses were paid in the
- `x402\_probe`: Use this to check a URL you are about to pay \(or one you operate\) for a well-formed x402 challenge before sending funds; a challenge is no guarantee the service delivers. Makes ONE live unpaid request to a public http\(s\) URL and reports whether it is an x402 endpoint: status code, latency, alive fla
- `sudoku\_puzzle`: Use this when a user wants a sudoku to play or print, or an app needs a verified puzzle at a named difficulty. Generates ONE sudoku puzzle with a unique solution, 180-degree symmetry, graded by the solving techniques it needs \(easy \| medium \| hard \| expert\). Returns 81-char puzzle and solution strin
- `quietforge\_pricing`: Price-check Quietforge's paid x402 HTTP routes before paying \(free read-only list, not tools here\): convert docx, xlsx, pptx, csv to pdf; PDF text; URL/HTML to PNG; sudoku books; manuscript typesetting; crosswords; family trees from GEDCOM; dataset quality audits; x402 index API. USD prices, pay-to

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