x402 Web Tools
Web/PDF to Markdown, transcription, paper search and citation checks. Pay per call in USDC via x402.
| Endpoint | https://x402-web-tools.microtools-x402.workers.dev/mcp (streamable-http) |
|---|---|
| Registry version | 0.2.0 |
| Now | 9 tools · grade D (59) · pin ts_d874f11b1ca4e118dae957c17d81078c · protocol 2025-06-18 |
| First / last listed | 2026-10-28 00:48 UTC / 2026-10-28 00:48 UTC |
| Grade over time | 2026-10-28: D (59), 9 tools |
Is this your server? Own a server? ToolFit hosted watch re-checks it every 24 h ($0.25 per 30 days) or 6 h ($0.60) and sends you an HMAC-signed webhook when its tools or grade change: POST https://api.youraitools.co/toolfit/v1/watch. To opt out, see About & opt-out.
Tools: read_url read_url_safe read_pdf transcribe_audio search_papers get_paper check_citation ping health
read_url | Fetch a public web page and return its main content as clean Markdown (readability extraction): title, url, final_url, markdown, word_count. HTML, plain text, Markdown, JSON and XML. Static fetch only (no JavaScript rendering). Respects robots.txt, blocks private/loopback/metadata hosts, max 3 MB / 15 s, no logins or paywall bypass. For PDFs use read_pdf. Failed reads are not charged. Costs $0.002 params: url* |
read_url_safe | Same as read_url plus a heuristic prompt-injection check: flags hidden/invisible text, instruction-like phrases ("ignore previous instructions", role reassignment, secret exfiltration, chat-template tokens), suspicious HTML comments and zero-width/Unicode-tag characters. Returns injection_check {flagged, risk none|low|medium|high, signals}. Heuristic, not a guarantee. Failed reads are not charged. params: url* |
read_pdf | Fetch a public PDF (max 10 MB) and convert it to Markdown with Cloudflare Workers AI toMarkdown. Returns title (if detected), url, markdown, word_count. Same URL safety rules as read_url. Failed conversions are not charged. Costs $0.006 USDC per call via x402. params: url* |
transcribe_audio | Transcribe a public direct audio file URL (mp3, wav, m4a, ogg/opus, flac; max 25 MB and 10 minutes, checked from the file header before transcription) with Whisper (@cf/openai/whisper-large-v3-turbo) on Cloudflare Workers AI. Returns text, language, duration, segments with timestamps, optional SRT/VTT subtitles. YouTube/TikTok/Instagram and other page URLs are rejected. Failed transcriptions and f params: url*, language, subtitles, include_words |
search_papers | Search scholarly papers (OpenAlex index of 250M+ works). Returns up to 25 results with title, authors, year, venue, DOI, citation count, open-access PDF link, abstract (reconstructed from OpenAlex's inverted index; may be null when the publisher withholds it) and OpenAlex id. Optional from_year / to_year / open_access_only filters. Data: OpenAlex (CC0, openalex.org) with Crossref REST (crossref.or params: query*, from_year, to_year, open_access_only, limit |
get_paper | Look up one scholarly work by DOI (10.xxxx/..., doi.org URL), arXiv id (arXiv:1706.03762) or OpenAlex work id (W...). Returns title, authors, year, venue, DOI, citation count, references count, open-access PDF link, abstract, OpenAlex id and a retraction flag (OpenAlex is_retracted plus Crossref/Retraction Watch notices). Data: OpenAlex (CC0, openalex.org) with Crossref REST (crossref.org) for ret params: id* |
check_citation | Check whether a cited paper really exists (catch hallucinated or mistyped references) and whether it has been retracted. Give a doi, or a title with optional year and first_author. Returns exists, verdict (verified | found | doi_exists_metadata_mismatch | uncertain | not_found), confidence (high/medium/low) with a note on what matched, is_retracted (OpenAlex is_retracted + Crossref/Retraction Watc params: doi, title, year, first_author |
ping | Paid connectivity test: returns ok and a server timestamp. Use it to check that your x402 payment flow works end to end. Costs $0.001 USDC per call via x402. params: none |
health | Free health check. Returns service status, version, tool prices, network and the plain-HTTP x402 endpoints. params: none |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.