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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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2,776 results- MMarket Quote SnapshotCrypto & DeFi
Real-time US stock & crypto price snapshots with 24h change, 52-week highs/lows and data source. Use when an agent needs current market prices for a whitelisted symbol such as NVDA, BTC or NEAR. Pay $0.001 USDC per call on Base mainnet.
Basex402-report.quanyida.workers.devfrom $0.0012 endpoints - Ttranslate-toll-production.up.railway.appOther services
Language detection. Detect the language of a text. POST /detect {"text":"..."}
Basetranslate-toll-production.up.railway.appfrom $0.0052 endpoints
OKF IndexSearch & webOKF Index: search Brazilian federal laws by number/year or words (up to 20 items), paid per call
Baseokfindex.comfrom $0.012 endpoints- JJev Structured EvaluationAI & agents
Structured evaluation with TypeSafe's Jev (System One) model. Send any state plus typed questions — noul (true/false), choice (pick one), or score (ordinal scale) — and get back calibrated probabilities and confidence for each. Built for routing, classification, triage and policy checks where a fast, predictable, machine-readable answer beats prose.
Basejev-x402-evil.vercel.appfrom $0.0051 endpoint - Iiposignal.xyzOther services
IPOSignal Sentiment Score — proprietary daily signal measuring investor appetite for new listings
Baseiposignal.xyzfrom $0.012 endpoints
HookPulseDeveloper toolsHookPulse: one uptime check of a URL (status, response time, keyword, TLS certificate), paid per call
Basehookpulse.netfrom $0.014 endpoints- Ggecko-toll-production.up.railway.appOther services
Coin price in USD
Basegecko-toll-production.up.railway.appfrom $0.012 endpoints - Ffalcon.sol compsMarkets & finance
falcon.sol: Use this when you need to size debt or compare credit risk across US public companies. Send up to 12 tickers; get gross and net leverage, interest coverage, FCF/debt, debt capacity under leverage, coverage and DSCR limits, capacity at peer-median leverage, 3 structures with indicative ratings, and a short credit memo. Every assumption is returned and overridable. $0.24 USDC.
SolanaBasefalcon-comps.vercel.appfrom $0.015 endpoints - Ddev-5090 uncensored inferenceAI & agents
Text embeddings (768-dim). Send {"input": "text"} or {"input": ["a","b"]}.
Basedev-5090-box.tailfb4c1f.ts.netfrom $0.0051 endpoint
CommsHarborDeveloper toolsCommsHarbor: email security audit of a domain (SPF, DKIM, DMARC, MX and a score), paid per call
Basecommsharbor.comfrom $0.013 endpoints- Nnohumans.directorySearch & web
Should my agent pay this x402 endpoint? One call returns pay, caution or avoid with plain reasons: probe history, payment-address stability, whether we bought it with real USDC and it delivered (with the tx), and whether the live price matches the listed one.
Baseapi.nohumans.directoryfrom $0.0053 endpoints
PontoFatoData & researchCompany lookup for CNPJ 00000000000191: registry, sanctions, tax standing and address. One payment for this call.
Basepontofato.comfrom $0.0016 endpoints
Grade TVOther servicesGrade TV: the TV schedule of one channel for a day (programs, times and synopses), paid per call
Basegradetv.netfrom $0.017 endpoints- Aapi.decadata.ioMarkets & finance
Year-on-year growth in point-of-sale sales and units for one of ~380 US consumer companies, by ISIN or ticker, for $0.01: the company's latest reported quarter (91 days to its end) against the same weekdays a year earlier, per panel store and against the covered market (all companies with the same series together). From transactions at eight US retailers, not government aggregates or SEC filings.
Baseapi.decadata.iofrom $0.012 endpoints - Aagent-domain-trust.iykykblog.workers.devAI & agents
Assess the trustworthiness of a domain: RDAP registration age and registrar, DNS records (A/MX/TXT-SPF), and HTTPS reachability. Returns a 0-100 trust score with signals and an audit receipt.
Baseagent-domain-trust.iykykblog.workers.devfrom $0.011 endpoint - CCORE HTML SEO AnalyzerData & research
Analyze raw HTML you provide and get structured SEO data as JSON: title, meta description, canonical, H1-H6 outline, links, JSON-LD blocks and structural checks (single H1, heading order, duplicates, JSON-LD validity). Use it to audit a page before publishing. No URL fetching, no JavaScript execution. Max 64 KiB of HTML.
Base92-222-181-125.sslip.iofrom $0.0023 endpoints
Dedge890AI & agentsProduct Listing Cleaner - Convert messy product names and rough notes into a corrected title, concise description, bullet features, and an organized specifications object for marketplace listings.
Baseproduct-listing.agent.amnt.iofrom $0.011 endpoint- Ccnvrt.ingImages, audio & video
Extract raw artifacts from images: OCR text and detected objects. No interpretation, just clean machine-readable data. Powered by GPT-4o Vision. Payment via USDC on base.
Basecnvrt.ingfrom $0.0051 endpoint - Xx402.whisperbox.my.idOther services
Currency rate conversion
Basex402.whisperbox.my.idfrom $0.011 endpoint - Wwebschutz.halowerk.comOther services
No accidental wildcard CORS audit fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.
Basewebschutz.halowerk.comfrom $0.0013 endpoints - Uus-cm-kg.aiAI & agents
One paid call on us-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://us-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Baseus-cm-kg.aifrom $0.011 endpoint - Ttopagentx402.vercel.appAI & agents
premium agent insight analysis
Basetopagentx402.vercel.appfrom $0.0012 endpoints - DDescriptive summaryData & research
Full descriptive summary of a numeric sample: count, sum, min/max/range, mean, median, mode(s), variance, standard deviation and the quartiles (q1/q3/iqr). Set sample=true for the sample variance/stdev (÷ n-1) instead of the population form (÷ n).
Basestats.openverbs.comfrom $0.0044 endpoints - SStableTicketsSearch & web
Search Ticketmaster events by keyword, date, location, venue, attraction, or classification
Basestabletickets.devfrom $0.012 endpoints - Sstable.halowerk.comCrypto & DeFi
Freeze Event Monitor analyses only the evidence supplied by the caller. It does not claim to query a chain, identify a legal status or replace an independent audit. Missing signals lower confidence and are listed explicitly; every classification includes the exact thresholds used.
Basestable.halowerk.comfrom $0.0013 endpoints - Ssg-cm-kg.aiAI & agents
One paid call on sg-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://sg-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Basesg-cm-kg.aifrom $0.011 endpoint
RecallScoutAI & agentsProduct recalls (US): is a product, brand, food, drug, medical device or vehicle (make, model, year) under an active FDA, NHTSA or CPSC recall? Severity on one scale, hazard, remedy and lot codes. RecallScout
BaseArbitrumPolygon+2recallscout.scalpstream.comfrom $0.011 endpoint- Ppathmint.edge.reportData & research
BEFORE YOU PAY Messari ($0.10–$0.25+): SKIP_MESSARI (use cheaper Pathmint/Signals), PAY_MESSARI (exact official endpoint + price), or ABORT (spoof/ghost). Two cents. Not Messari data — a gate in front of it.
Basepathmint.edge.reportfrom $0.012 endpoints - Oownly-cmf-x402.joyd-ai-2026.workers.devSocial & people
Chinese social platform hot lists (Weibo 微博, Baidu 百度, Zhihu 知乎, Toutiao 今日头条, Douyin 抖音, Bilibili 哔哩哔哩, Kuaishou 快手), ranked, public data. $0.01 USDC per call.
Baseownly-cmf-x402.joyd-ai-2026.workers.devfrom $0.012 endpoints - OOverwingCrypto & DeFi
Overwing guardrail: check text before you send, post, or act on it. Content moderation, PII detection, confidential leak detection, toxicity, self-harm and severity in ~150 ms. Returns a verdict plus one recommended_action (block / redact / review / allow) with calibrated confidence. Pass context (recipient, channel, owns_contact_info) with the outbound-message set. $0.002 USDC, no account.
Baseoverwing.aifrom $0.0014 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.