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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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Search & web
379 results- Xx402-v2-mint-crossref-journals.vercel.appSearch & web
Crossref journals search (keyless). POST {q|query}/{rows?}. Empty -> 400 not charged. Adjacent to Crossref works/funders.
Basex402-v2-mint-crossref-journals.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-crossref-funders.vercel.appSearch & web
Crossref funders search (keyless). POST {q|query}/{rows?}. Empty -> 400 not charged.
Basex402-v2-mint-crossref-funders.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-crates-io-lookup.vercel.appSearch & web
crates.io crate metadata / search (keyless). POST {crate} and/or {query,per_page?}. Miss → 404 not charged.
Basex402-v2-mint-crates-io-lookup.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-cpsc-recalls.vercel.appSearch & web
CPSC/SaferProducts.gov consumer product recalls search (keyless). POST {RecallTitle} (+ optional RecallNumber/Manufacturer/ProductName/format). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: nhtsa-recalls (vehicle safety recalls ≠ CPSC consumer product recalls).
Basex402-v2-mint-cpsc-recalls.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-cocktail-search.vercel.appSearch & web
TheCocktailDB drink search (keyless). POST {s|q|name}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Soft disclose mealdb-search (food/drink lane).
Basex402-v2-mint-cocktail-search.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-clinvar-variant-search.vercel.appSearch & web
ClinVar variant search (keyless). POST {q|query}/{retmax?}. Empty -> 400 not charged.
Basex402-v2-mint-clinvar-variant-search.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-cleveland-art-search.vercel.appSearch & web
Cleveland Museum of Art open-access search (keyless). POST {q}/{limit?}. Empty -> 400 not charged. Met adjacency disclosed.
Basex402-v2-mint-cleveland-art-search.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-catalogue-of-life.vercel.appSearch & web
Catalogue of Life / ChecklistBank name-usage search (keyless). POST {q, limit?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: itis-taxonomy-search / gbif-species-match / worms-aphia-lookup / idigbio-records (≠ those products; CoL ChecklistBank taxonomy lane).
Basex402-v2-mint-catalogue-of-life.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-agent-ready-recheck.vercel.appSearch & web
Re-probe AI-crawler reach after fixes (or first-pass with url). Amp port. Verify-before-settle; 422 if blocked.
Basex402-v2-mint-agent-ready-recheck.vercel.appfrom $0.011 endpoint
WebPulseSearch & webWeb content extraction and search. Get clean markdown from any URL or search results.
BaseSolanawebpulse.waltsoft.netfrom $0.011 endpoint- WWeb Page ExtractSearch & web
Fetch a public https page and return its HTML tables as header and row arrays, with captions and row/column spans resolved.
BaseSolanaPolygon+1web-extract.x402tookit.comfrom $0.031 endpoint - Sstatic-page-extractor.mekler.aiSearch & web
Fetch one public static HTML page after robots and public-address checks, then return bounded readable text, title, final URL and source links. Standard x402: POST the URL, sign the 402 and resend the same body. The 402 also returns an encrypted payment_request that pays for exactly the quoted fetch. No browser, login, summary or full-site crawl.
SolanaBasestatic-page-extractor.mekler.aifrom $0.0051 endpoint - PPayload CheckSearch & web
Payload Check: data-quality filter for agents. Send any payload (tool/API output, scraped page, LLM answer, generated code, JSON, CSV) and get a 0-100 quality score, pass/warn/fail, tags and concrete issues: invalid or truncated JSON (with auto-repair), JSON Schema mismatches, syntax errors, bot-challenge/captcha/404 scrapes, LLM refusals, placeholders, repetition loops, mojibake. Deterministic, n
Baseseenly-payload-check.vercel.appfrom $0.011 endpoint
SearchPulseSearch & webGrounded web search: question → answer + citations, powered by Bedrock Web Search.
BaseSolanasearchpulse.waltsoft.netfrom $0.251 endpoint- Rrobotinsight.krSearch & web
Korean robotics industry intelligence, sold per query. Structured feed of Korea/Asia robot-sector news, analysis and KPIs - humanoids, physical AI, robot components (reducers, actuators, MEMS force-torque and tactile sensors), robot semiconductors, defense and logistics robots - written from Korean primary reporting and DART filings that English-language sources do not cover. Filter by date, regio
BasePolygonrobotinsight.krfrom $0.111 endpoint - Ppoms-api.canvas-cart.workers.devSearch & web
Full text of one section of the SSA Program Operations Manual System (POMS). Get the id from GET /search?q=<keywords> or GET /part/:code. Use this when you need the complete, verbatim text of a specific POMS section for a disability, retirement, SSI, or Medicare question, not a summary.
Basepoms-api.canvas-cart.workers.devfrom $0.011 endpoint - BBotonomy Schema AuditSearch & web
Audits the JSON-LD structured data on one public web page: P1 for no schema or missing required properties, P2 for a low rich-result score, each with the properties to add. Call it when a page is missing rich results in Google or before publishing a page that should earn them. Input: url. Returns in seconds. Errors: 400 invalid input, 502 audit failed, 504 timed out. You are not charged for an err
Basepay.botonomy.aifrom $0.051 endpoint
Cypher ConnectSearch & webSearch verified street dance events worldwide (battles, jams, workshops): up to 50 full records
Basenbdkupglrdfzopydimlt.supabase.cofrom $0.0051 endpoint- JJobs SearchSearch & web
Job search — find current openings by role, skill or company with location, salary, schedule, qualifications and direct application links.
BasePolygonArbitrum+1jobs.use.x402atlas.comfrom $0.051 endpoint - Iirm-api.canvas-cart.workers.devSearch & web
Full text of one section of the IRS Internal Revenue Manual (IRM). Get the id from GET /search?q=<keywords> or GET /part/:number. Use this when you need the complete, verbatim text of a specific IRM section on IRS examination, collection, appeals, penalty, or disclosure procedure, not a summary.
Baseirm-api.canvas-cart.workers.devfrom $0.011 endpoint - AAI Web ExtractorSearch & web
AI Web Extractor — turn ANY url into clean, LLM-ready markdown. POST {url}; get the main content as markdown (boilerplate/nav/ads stripped) with title, description, and links. The scrape / read / url-to-markdown primitive for RAG and research agents. Fast, cheap, x402-native.
BaseSolanaextract.vevang.comfrom $0.011 endpoint - GGuildpilot EvidenceSearch & web
Extract a public web page into timestamped, normalized evidence.
Base SepoliaSolana Devnetevidence.guildpilot.appfrom $0.021 endpoint
DAP Compute Market TrackerSearch & webSearch compute derivative contracts by venue, status, index and settlement.
Basedap.solutionsfrom $0.011 endpoint- Ccontracts.memoryapi.orgSearch & web
Search active US federal grant opportunities on Grants.gov
Basecontracts.memoryapi.orgfrom $0.011 endpoint - Cchina-trends-x402.onrender.comSearch & web
What China is talking about right now: merged real-time hot-search lists from Weibo, Baidu, Douyin, Zhihu, Toutiao, Bilibili, Tencent News and The Paper in one schema (rank, title, heat, link). Optional keyword filter (Chinese or English) to monitor a brand/topic. 中国实时热搜聚合:微博/百度/抖音/知乎/头条/B站/腾讯/澎湃。
Basechina-trends-x402.onrender.comfrom $0.0051 endpoint - Rrecallsapi.comSearch & web
Search recall records from 9 US agencies (CPSC, FDA, NHTSA, US Coast Guard, FAA and more) by words, category and date, newest and most relevant first. Each record has hazard, remedy, firms, products, identifiers, as-of date and the agency source link. Use for questions like "recent listeria recalls" or "Takata airbag recalls".
Baseapi.recallsapi.comfrom $0.011 endpoint - RRecallRadarSearch & web
Search consumer-product safety notices by authority, jurisdiction, recall status, category, risk, hazard, manufacturer, date, or free text.
Baseapi.recallradar.devfrom $0.101 endpoint - AApexSearch & web
Search normalized vehicle variants by brand, model, model year, powertrain, market, or free text.
Baseapi.apex-db.orgfrom $0.101 endpoint - Aapi.agishub.comSearch & web
Turn text into a numeric embedding vector for semantic search, RAG and similarity. Multilingual.
Baseapi.agishub.comfrom $0.011 endpoint
ZadenWorks ReadSearch & webExtract every HTML table on a page as structured JSON — headers, row arrays, and (when headers are unique) row objects keyed by header name. Saves hand-parsing pricing tables, spec sheets, and schedules out of raw HTML.
Basex402-zadenworks.zaden-gaming.workers.devfrom $0.018 endpoints
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.