x402watch

53,742 paid endpoints are listed. 25,811 answered a real 402 at the last check.

Every x402 endpoint on the Coinbase Bazaar and x402scan, probed unpaid every six hours. A listing tells you the price a seller wrote down. This tells you whether the endpoint is reachable, whether it charges what it declared, and how fast it answers. Ranked by an assay score out of 100.

Last check 2026-10-07 06:24 UTC · 53,742 probed

25,811 answering 40222,423 down4,640 rejecting868 no paywall1,848 price drift
  1. 90proxy.aproxpay.com/v1/sessionEntry session pass: ephemeral CONNECT credentials (30 min + 15MB). Upsell: /v1/session/heavy or /v1/session/gb.$0.05 Base1208 ms2 payers100% up
  2. 90api.x402intel.uk/x402-marketx402 market intelligence with current catalog-attributed USDC flow, address-level demand signals and separately labeled value-matched history. The headline covers Base only (market.universeChains); the multi-chain picture ships alongside it as ecosystem, split into an RPC-proven floor and an indexed upper bound that are not additive (notASum). Attribution is not exclusive protocol-intent proof.$0.05 Base1487 ms2 payers100% up
  3. 90tripadvisor.x402.paysponge.com/api/v1/location/:locationId/detailsService: Tripadvisor (https://tripadvisor.x402.paysponge.com/api/v1/location/154943/details)$0.01 Base1095 ms2 payers100% up
  4. 90x402.ochinimus.app/api/liquidationsCrypto liquidations, live tape: recent perp liquidation prints across Bybit, OKX and Binance with timestamp, side liquidated, size, price and USD value. Use when you need to answer: Which liquidations just printed? Any USDT perp we record, not just majors. The Bybit tape is complete and unthrottled.$0.003 Solana1094 ms2 payers100% up
  5. 90mcp.barker.money/barker_market_overviewBarker's stablecoin market snapshot: total market cap, yield-bearing cap, asset distribution, chain distribution. Use for 'stablecoin market cap', 'USDT market share', '稳定币市场份额'. share_pct fields are decimals (0.425 = 42.5%).$0.001 eip155:1961318 ms2 payers100% up
  6. 90www.getbags.app/api/agent/link/pl-85f28558-0f86-40bd-9a8a-1b485ca8f7faNodeOps API$0.05 Base1595 ms2 payers100% up
  7. 90trade.lonestaroracle.xyz/tradeUS trade-flow + tariff signal by commodity$0.05 Base1154 ms2 payers100% up
  8. 90fiatdock.com/v1/chain/usdc-balanceUSDC balance of any address on Base — the x402 settlement asset (atomic + USDC). Pay-per-call via x402. An empty body is answered for the wallet that pays (the payment's signer); send {"address":"0x…"} for any other address.$0.001 Base1468 ms2 payers100% up
  9. 90api.sirenic.eu/v1/eu/agrementsEU financial authorisations in five official registers, by name or LEI: ESMA Registers (MiFID entities, EU/EEA: status, authority, dates), the ECB list of supervised entities (banking union: significant banks under direct ECB supervision, less significant under national authorities, group, monthly changes), ESMA benchmark administrators and money market funds (fund, manager, status), EIOPA pension institutions (IORP). One integration for the single market; data free at the sources.$0.01 Base1275 ms2 payers100% up
  10. 90glim.sh/api/v1/twitter/users/relationshipCheck follow relationship$0.001 Solana1080 ms2 payers100% up
  11. 90glim.sh/api/v1/twitter/tweets/:idFetch a tweet by ID$0.001 Solana1296 ms2 payers100% up
  12. 90quantum-artificer.surewhynot.app/v1/physics/solvePhysics ODE solver (SciPy): coupled ODE systems from parameterized templates (orbital 2-body, oscillator, pendulum, heat transfer, RC/RLC, projectile-with-drag, SIR) or a generic linear system, with energy/conservation checks. Paid in USDC on Base or Solana.$0.005 Base1178 ms2 payers100% up
  13. 90api.relaystation.ai/v1/image/ocr$0.003/call. Extract text from an image — Tesseract, 10 languages, plain text out. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny$0.01 Base1028 ms2 payers100% up
  14. 90api.macaroonnetwork.com/execute/polymathica-validated-solver-index-v1Search a governed snapshot of implemented, validated Polymathica PDE and scientific-computing solvers. Returns validation versions, bounded evidence locations, implementation modules and provenance without claiming a fresh solver execution.$0.005 Base1805 ms2 payers100% up
  15. 90api.macaroonnetwork.com/execute/commercial-use-licence-check-v1Check a specific dataset, paper, repository, or model URL against the indexed open-science corpus and receive a conservative, source-linked commercial-use and redistribution status. Never infers permission from an absent or ambiguous licence -- returns unknown rather than guessing.$0.003 Base1786 ms2 payers100% up
  16. 90api.macaroonnetwork.com/execute/polymathica-feed-meta-v1Metadata about the GPU/LLM pricing feed's tracked targets: source URL, last-fetch time, content hash, and parse status per provider. No pricing values themselves -- use the pricing listing for that. No outbound network on purchase; read from the local feed database.$0.002 Base1238 ms2 payers100% up
  17. 90api.macaroonnetwork.com/execute/chain-state-snapshot-v1Current block number and gas price for Base and Polygon mainnet, fetched live via RPC on every call. Unlike this catalogue's corpus-search listings, this makes a real outbound network call on purchase -- freshness is the product, not a stored snapshot.$0.001 Base1034 ms2 payers100% up
  18. 90glim.sh/api/v1/twitter/users/:ref/followersUser followers$0.004 Solana1018 ms2 payers100% up
  19. 90rugsense.xyz/api/launches/latestScored intelligence on freshly-launched Base tokens: safety + momentum → composite score and an AVOID/WATCH/HOT decision per launch. One call returns a ranked list.$0.03 Base1391 ms2 payers100% up
  20. 90surf.cascade.fyi/api/v1/web/searchRun a semantic web search with ranked results$0.01 Base1093 ms2 payers100% up
  21. 90energy.halowerk.com/carbon/nowAktuelle CO2-Intensität des deutschen Strommix.$0.001 Base2223 ms2 payers100% up
  22. 90aegis-api-mainnet.kadopi.workers.dev/v1/verifyAegisAI risk verification$0.01 Base1446 ms2 payers100% up
  23. 90quartermaster.surewhynot.app/v1/diffCompact line-level diff between two texts.$0.001 Base1214 ms2 payers100% up
  24. 90stablefinance.dev/api/financials/search/line-itemsPull specific line items across a list of tickers.$0.02 Base1421 ms2 payers100% up
  25. 90api.sirenic.eu/v1/regulateurs/fr/alertesFrench financial regulator alerts and scam check against the official AMF blacklist: screen a name for unauthorized investment websites, scams and AMF impersonation, and look up PSAN crypto provider registrations and licensed asset management companies (SGP) by name or SIREN. A compliance screening of the regulator blacklists for agents vetting French counterparties in crypto and asset management. Official AMF open data (Licence Ouverte 2.0), refreshed daily.$0.01 Base1047 ms2 payers100% up
  26. 90agent402.tools/api/skill/decode-blobHand the agent an opaque string - a JWT, a base64'd JSON payload, a gzip-encoded API response, a hex-encoded hash - and walk it through identifying what it is and unwrapping it layer by layer until it's human-readable. Decode this blob skill pack: one x402 payment runs 7 underlying tools (jwt-decode, gunzip, brotli-decompress, base64, hex, json-format, hash); partial-success per step.$0.007 Base1091 ms2 payers100% up
  27. 90agent402.tools/v1/embeddingsEmbeddings (OpenAI-compatible) ($0.002/call via x402 or MPP)$0.002 Base1299 ms2 payers100% up
  28. 90x402.agentutility.ai/weather-current-cityReturns current weather for any city or place name, no coordinates needed. Geocodes the name with Open-Meteo, chooses the best match with optional country_code, then returns current temperature, feels-like, humidity, wind, precipitation, WMO weather code, timezone, and optional daily/hourly forecast from Open-Meteo. Use it as a city weather API or instant weather lookup by place name.$0.01 Base48 ms2 payers83% up
  29. 90402.com.tr/api/x402/proxy-checkReads the EIP-1967 proxy slots live: is the contract upgradeable, what's the current implementation, and WHO can upgrade it. Flags the dangerous case — an EOA admin that can swap the logic at any block with no timelock/multisig. Upgradeability is a rug vector static scans miss.$0.03 Base1001 ms2 payers100% up
  30. 90402.com.tr/api/x402/fresh-bridge🆕 Cross-chain inflow detection. Reads a wallet's recent USDC MINTS and correlates them with Circle CCTP receives to tell you whether its USDC is freshly bridged in (and from which source chain — Ethereum, Arbitrum, OP, Polygon, Solana…) vs natively issued. Freshly bridged capital is new money / a possible cross-chain hop — a real signal for trading and liquidation agents that no other Base tool surfaces. wallet= required, days= optional (default 30, max 90). Not financial advice.$0.04 Base1040 ms2 payers100% up
  31. 90api.brazilayer.com/v1/mercado/pacoteThe whole Brazilian market snapshot in ONE call, a third cheaper than one by one: official USD/BRL rate with the live crypto premium, macro indicators (Selic, IPCA, activity) and the latest headlines with sentiment, refreshed every 15 minutes. Same JSON as the single endpoints, keyed by name; 503 and no charge if fewer than half respond. Free sample, no payment: https://api.brazilayer.com/v1/mercado/amostra$0.004 Base2238 ms2 payers100% up
  32. 90data.finery.cc/v1/schools/searchSearch Singapore MOE schools by name or postal code (optional level filter). Results include the school directory joined with subjects offered, CCAs, MOE programmes and distinctive programmes.$0.005 Base1192 ms2 payers100% up
  33. 90api.messyvirgo.com/api/v1/paid/context/macros/latestCrypto macro regime in one call: a 0-100 Messy Virgo macro score and risk regime built from 20 indicators (global liquidity, Fed balance sheet, spot ETF and stablecoin flows, real yields, USD, equities), adjusted for the day's news, with a written interpretation. Use it to set risk before any trade, allocation or market report. Refreshed four times a day.$0.01 Base1206 ms2 payers100% up
  34. 90agent.pocket.network/v1/pmic-macro-signalsScored US and global macro briefs from official data (FRED, BLS, BEA, EIA, ECB, IMF, OECD and more): inflation, labor, rates, credit stress, housing, energy, an economic calendar, Pocket Network health and crypto liquidity. Each is a 0-100 score with trend, drivers, risk flags and a citation per input. POST /v1/brief with {vertical}. Research signal, not investment advice.$0.005 Base1011 ms2 payers100% up
  35. 90chain-analyzer.com/api/v1/x402/issuer/supplyStablecoin issuer supply in one JSON call: pass the issuer as the `slug` query parameter. Returns total and circulating supply per chain, cumulative mint and burn totals, and the 20 most recent issuance / redemption events with transaction hashes. Same numbers as the public issuer page, shaped for agents.$0.05 Base1034 ms2 payers100% up
  36. 90openai.mm.family/x402/v1/images/generationsOpenAI image generation (gpt-image-2.5, gpt-image-2, gpt-image-1.5, gpt-image-1, gpt-image-1-mini, chatgpt-image-latest), paid per call in USDC. OpenAI list rates per 1M image tokens (1024x1024 low = 196 tokens on gpt-image-2), plus $0.0005 (Base) or $0.0005 (Solana) per call. Send size and quality (auto is refused); omitted means 1024x1024 medium. Returns b64_json. One endpoint per model: /x402/v1/models/<key>/images/generations. Rates: https://openai.mm.family/x402/pricing$0.0035 Base1969 ms2 payers100% up
  37. 90api.erb-llm.com/v1/embeddingsPrivacy-first OpenAI-compatible text embeddings (768 dims) from a local encoder on dedicated hardware - your text never reaches a third-party cloud. Send {"input": string or array of up to 64 texts}; receive standard OpenAI embeddings JSON with usage. Built for RAG, semantic search, dedupe and clustering in agent pipelines. ~2,000-token limit per text. Pay per call in USDC on Base (x402), no API key or account.$0.001 Base1009 ms2 payers100% up
  38. 90sign.cyberwarex.com/decodeDecode an off-chain SIGNATURE REQUEST before you sign it$0.002 Base1050 ms2 payers100% up
  39. 90council.cyberwarex.com/councilPut one question to a panel of 3 different AI models and get a single verdict back. Each model answers independently, then a chair synthesizes: verdict, confidence, the points they all agreed on, the dissent, and what would flip the answer. Use it for judgement calls where one model's opinion is not enough: is this safe, is this worth it, which option. No account, no API key, one USDC micropayment per call.$0.01 Base1193 ms2 payers100% up
  40. 90x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/reportUse when an agent needs an x402 market report. Returns market report: top 40 categories by paying wallets (providers, calls, payers, median price) and top 25 services by 30-day calls$0.02 Base1384 ms2 payers100% up
  41. 90evmstate.com/v1/state-batchRead-only EVM state API for wallet snapshots, ERC-20 balances, token allowances, contract code, block heights, and bounded eth_call reads across Ethereum, Base, Arbitrum, Optimism, and Polygon. Fixed price: $0.05 USDC on Base for a batch of up to 25 checks. Only submitted checks run. Results are provider-reported RPC data, not cryptographic proofs.$0.05 Base1148 ms2 payers100% up
  42. 90toll402.dev/v1/provenanceHuman or synthetic? Provenance evidence for a URL: archive first-capture date, domain age, authorship markup, curated source tier, AI disclosures and stylometric signals, aggregated into a calibrated 0-100 human-origin score with every piece of evidence. Add deep=true for an LLM stylometric assessment.$0.01 Base236 ms2 payers83% up
  43. 90app.metalift.ai/v1/sitemapMetalift sitemap: fetch URLs from XML sitemaps (robots.txt or /sitemap.xml). Prefer over map for site-wide URL lists before batch scrape. (1 credit ≈ $0.002 USDC)$0.002 Base1032 ms2 payers100% up
  44. 90x402.agentutility.ai/survey-sentiment-analysisScores open-ended survey responses by theme or aspect, for research agents. Same backend as sentiment-analysis. Use it as a survey sentiment analysis API, NPS verbatim classifier, or feedback sentiment scoring tool.$0.01 Base177 ms2 payers83% up
  45. 90www.amnt.io/api/agent/amnt/gpt-image-2-5-flare-highGPT Image 2.5 Flare High - GPT Image 2.5 Flare, high quality: text to picture. Fast, bold and vivid. Great characters. Any shape up to 3:1, transparent PNG or JPEG. $0.054, about 25 s.$0.054 Base1280 ms2 payers100% up
  46. 90www.amnt.io/api/agent/amnt/gpt-image-1-5-lowGPT Image 1.5 Low - GPT Image 1.5, low quality: text to picture. Clean flat art: logos, icons and stickers. Square 1024x1024, transparent PNG or JPEG. $0.013, about 15 s.$0.013 Base1173 ms2 payers100% up
  47. 90www.amnt.io/api/agent/amnt/gpt-image-1-5-highGPT Image 1.5 High - GPT Image 1.5, high quality: text to picture. Clean flat art: logos, icons and stickers. Square 1024x1024, transparent PNG or JPEG. $0.138, about 25 s.$0.138 Base1167 ms2 payers100% up
  48. 90www.amnt.io/api/agent/amnt/gpt-image-1-mini-highGPT Image 1 Mini High - GPT Image 1 Mini, high quality: text to picture. The cheapest. Quick drafts and simple pictures. Square 1024x1024, transparent PNG or JPEG. $0.034, about 25 s.$0.034 Base1135 ms2 payers100% up
  49. 90www.amnt.io/api/agent/amnt/gpt-image-1-5-mediumGPT Image 1.5 Medium - GPT Image 1.5, medium quality: text to picture. Clean flat art: logos, icons and stickers. Square 1024x1024, transparent PNG or JPEG. $0.039, about 15 s.$0.039 Base1385 ms2 payers100% up
  50. 90www.amnt.io/api/agent/amnt/gpt-image-2-5-sunburst-mediumGPT Image 2.5 Sunburst Medium - GPT Image 2.5 Sunburst, medium quality: text to picture. Precise: every detail lands where you ask. Any shape up to 3:1, transparent PNG or JPEG. $0.015, about 25 s.$0.015 Base1550 ms2 payers100% up
  51. 90api.duoleads.com/v1/text/transliterateTransliterate Cyrillic text into Latin using a named standard: ISO 9:1995 (one-to-one, with diacritics, covering the full standard: Russian, other Slavic, historic and non-Slavic Cyrillic letters) or BGN/PCGN, which is the Russian system only (Ukrainian, Serbian and other letters are passed through unmapped). Returns the transliteration, the source script, the standard, the mapped fraction and the unmapped characters. Other scripts are rejected with UNSUPPORTED_VALUE.$0.05 Base1004 ms2 payers100% up
  52. 90www.elements-live.com/v1/lab/quoteLab quote: a filter query (+must -exclude "topic" (a OR b) wild* year:a..b) in; matching paper volume by year and research community, and a binding price per deliverable out.$0.01 Base1021 ms2 payers100% up
  53. 90api.blockchain.info/explorer-gateway-kt/x402/charts/poolsPaid AI-agent access to Blockchain.com Explorer API$0.001 Base1108 ms2 payers100% up
  54. 90webtools402.176-109-107-191.sslip.io/screen/addressCheck whether a crypto address appears on the official public sanctions lists (OFAC SDN, UK, EU, UN). Deterministic exact lookup; returns the matched record (list, program, entity name, reference, currency).$0.003 Base1289 ms2 payers100% up
  55. 90alphapipeline-eu.onrender.com/v1/tools/ai-markdownConvert any webpage URL into clean, ad-free Markdown text optimized for LLM context windows. Paid in USDC on Base.$0.005 Base1040 ms2 payers100% up
  56. 90bazaar.fronesislabs.com/evaluate/safetyDCL Trust Oracle. Call only when the text must include the substring AI and must not include "I cannot be held responsible" or "no guarantees". POST JSON {"response","agent_id"}. COMMIT means those checks passed and the action may proceed. NO_COMMIT means do not execute the checked action. Not a tool-call guardrail, prompt-injection detector, or jailbreak screen; use /evaluate/fast for the phrase check.$0.01 Base1157 ms2 payers100% up
  57. 902-28-111-166.sslip.io/v1/summarizeFasst Text zusammen (Summarize text).$0.01 Base1127 ms2 payers100% up
  58. 90crosscheckapi.com/v1/accept-liteVerify output another AI agent hands back, by code alone, for $0.005: no model call, answers in about a second. Recomputes the deliverable's written sums, totals, percentages, dates, weekdays, time spans, unit conversions, and list counts; checks lengths the task asks for; flags placeholders and prompt injection; measures words, items, and JSON shape. Signed receipt, tier lite. For every requirement judged, use accept ($0.03).$0.005 Base1046 ms2 payers100% up
  59. 90machine-market-social-mainnet.machine-market.workers.dev/profileFetch a current public creator profile.$0.008 Base1116 ms2 payers100% up
  60. 90aayatai.com/qrTurn text or a link into a QR code. Pass ?text=https://example.com. Returns a crisp SVG image and a data: URL you can drop into HTML or Markdown. Options: ecc (error correction L, M, Q, H), size in pixels, margin, dark and light colours (#hex). Up to 2,000 characters.$0.001 Base1265 ms2 payers100% up
  61. 90aayatai.com/dnsLook up DNS records for any domain: A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, PTR, DS, DNSKEY, HTTPS, or ALL common types at once. Pass ?name=example.com&type=MX. An IP address with type=PTR does a reverse lookup. Uses DNS-over-HTTPS (Cloudflare 1.1.1.1) and reports DNSSEC validation and NXDOMAIN.$0.001 Base1239 ms2 payers100% up
  62. 90aayatai.com/dao/searchFind a DAO's Snapshot space by name: returns matching spaces, biggest first, with their id (to use with dao-proposals), whether Snapshot has verified them, followers, number of proposals and how many votes are open now. E.g. q=uniswap, aave, arbitrum, ens.$0.001 Base1603 ms2 payers100% up
  63. 90aayatai.com/chain/rankBlockchains ranked by total value locked in DeFi or by US-dollar stablecoins circulating on them, with both figures and each chain's gas-fee currency symbol (e.g. ETH, SOL). Up to 50 chains. DefiLlama data; for one chain in depth use chain-stats.$0.002 Base1399 ms2 payers100% up
  64. 90aayatai.com/x402/checkLive health check of any x402 endpoint before you pay it: is it up and answering 402, is the payment request valid, prices in USD per network, pay-to wallets, x402 version, Bazaar discovery metadata, response time, and its buyers in the Bazaar. Never pays the endpoint. Give the endpoint's URL and how it is called (GET or POST). For our own endpoints the answer comes from our in-process monitor (a Worker can't call its own address).$0.002 Base1176 ms2 payers100% up
  65. 90aayatai.com/tools/findFind the best tool for a job. Describe the task in plain English (e.g. 'check if a token is a rug pull', 'scrape a page to markdown', 'cheap LLM chat') and get a short ranked list of pay-per-call x402 APIs and MCP servers side by side: what each does, exactly how to use it, price, reliability from our own checks, and why it fits. Neutral: ranking is never paid, and you call and pay each tool directly.$0.002 Base1173 ms2 payers100% up
  66. 90aayatai.com/perps/orderbookLive order book for a perpetual futures market on Hyperliquid or dYdX: best bid and ask, spread in bps, USD depth within 10/50/100 bps of mid, and the average fill price and slippage of a market buy and sell of your size. Pass ?coin=ETH&sizeUsd=25000 (&venue=dydx).$0.002 Base1120 ms2 payers100% up
  67. 90aayatai.com/perps/candlesOHLCV candles for a perpetual futures market on Hyperliquid or dYdX (1m to 1d, up to 500), with a summary: change, high/low, USD volume and annualised realised volatility. Pass ?coin=ETH&interval=1h&limit=24 (&venue=dydx).$0.002 Base1163 ms2 payers100% up
  68. 90aayatai.com/page/changesWatch any public page for changes: we fetch it now (robots.txt respected), fingerprint its text and return a token. Send that token next time and get changed yes/no plus the blocks added and removed since your last check. Nothing is stored on our side. Option to ignore number-only changes. POST {url, token}.$0.002 Base1197 ms2 payers100% up
  69. 90aayatai.com/dao/proposalsA DAO's governance votes from Snapshot: the latest proposals (active, closed or all) with title, dates, voting type, each choice's votes and share, the leading choice, number of voters, quorum and whether it was met, a short summary and the link. Give the Snapshot space id, e.g. uniswapgovernance.eth, aavedao.eth, arbitrumfoundation.eth. No voter addresses.$0.002 Base1040 ms2 payers100% up
  70. 90flat-rate-llm.kikoribera03.workers.dev/v1/evm/token-infoName, symbol, decimals and total supply of any ERC20 contract in one call. Useful to label a token address before showing it to a user. Via eth_call.$0.005 Base258 ms2 payers83% up
  71. 90flat-rate-llm.kikoribera03.workers.dev/v1/evm/blockLatest block height and timestamp of any supported chain, plus how old the chain head is in seconds. Tells an agent whether a node is in sync. Via eth_getBlockByNumber.$0.005 Base139 ms2 payers83% up
  72. 90flat-rate-llm.kikoribera03.workers.dev/v1/web/statusChecks one URL without downloading the page: HTTP status, the full redirect chain hop by hop with the code of each, the final URL, whether it ends on HTTPS, content type and size, and the security headers the server sends. Built for going through a list of links one at a time. No API key, no account.$0.005 Base240 ms2 payers83% up
  73. 90flat-rate-llm.kikoribera03.workers.dev/v1/util/vatValidates one EU VAT number offline: country prefix, the format that country uses, and the published check-digit algorithm where one exists. Says explicitly whether the check digits were verified or only the format. Deterministic, no network call. Built for cleaning a list of companies one at a time.$0.005 Base194 ms2 payers83% up
  74. 90x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/countUse when an agent needs x402 market totals. Returns catalogue size and 30-day totals: services, calls, unique paying wallets, with the snapshot hash$0.001 Base1410 ms2 payers100% up
  75. 90agents.alphaquantlabs.ai/v1/propertyAQL PropertyCheck: Gold Coast property due diligence for buyers, renters and AI agents; one paid lookup returns the full available package; not a valuation$0.9789 Base1427 ms2 payers100% up
  76. 90api.tradebot.devs.surf/v1/market-data-attestationCrypto Market Data Integrity Attestation for agents and trading systems. Validate caller-supplied crypto market observations for causal timing, freshness, gaps, sequencing, identity consistency, and cryptographic record hashes. Returns deterministic PASS/FAIL, safe_to_use, named checks, and attestation identity. Use before analytics, research, or trading workflows. No market data acquisition or redistribution; no trade recommendation.$0.01 Base1089 ms2 payers100% up
  77. 90aayatai.com/translateTranslate text between 100+ languages with AI. POST JSON {"text": "...", "target": "French"} (language name or code such as fr, de, es, ja, zh, ar). Optional "source" language, otherwise it is detected. Up to about 12,000 characters of English (4,000 of Chinese/Japanese) per call. Keeps formatting such as Markdown and line breaks. Failed calls are not charged.$0.01 Base525 ms2 payers92% up
  78. 90http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/marketplace/listing-stateNormalize public marketplace listing activity, offer, seller, condition and quantity hints. eBay credentials are optional configuration; no buying, bidding or seller mutation is supported. Base mainnet USDC$0.003 Base457 ms2 payers92% up
  79. 90sigma-api-oracle.tailae0cf3.ts.net/v1/market/scanSigma SCOUT: compact read-only market opportunity evidence for autonomous agents.$0.02 Base Sepolia1578 ms2 payers100% up
  80. 90jobs.rqmtechnologies.com/x402/buyer-jobs/openqasm3-preflight-v1Problem: Parse, normalize, and assess OpenQASM 3 before downstream execution. Input: JSON with source. Result: go, no-go, or unsupported verdict, normalized source, warnings and evidence. Limits: Local software evidence only; 3 verification qubits; 65536 source bytes.$0.01 Base1076 ms2 payers100% up
  81. 90api.solgiery.com/v1/random/bytesGenerate length cryptographically random bytes, encoded as lowercase hexadecimal. length defaults to 32 and may be 1 to 4096. Uses the server OS CSPRNG. Returns consumed bytes for reproducible calculation, not proof of their origin. Price: 0.007 USDC per request, including the bounded batch.$0.007 Base1004 ms2 payers100% up
  82. 90omniguchi.0000402.xyz/care/feedRestore Hunger for an active Omniguchi. Any verified payer may care for any hatched target.$0.01 Base1330 ms2 payers100% up
  83. 90api.agentstools.dev/derivs/oiOpen interest for a perpetual asset across decentralized venues (Hyperliquid, dYdX v4): per-venue open interest in coins and in USD notional (via each venue's mark or oracle price), the total aggregate USD open interest and each venue's share. One call, normalized across protocols.$0.01 Base1026 ms2 payers100% up
  84. 90api.dripmetrics.ai/market/summaryDripMetricsAI (https://dripmetrics.ai/) BTC market summary: one x402 call returns deterministic microstructure signals and metrics (including raw, baseline, and excess VPIN) computed from the live trade tape and Deribit chain, plus a concise AI-written explanation. Hedged historical tendencies only - no price targets or trade recommendations.$0.25 Base1175 ms2 payers100% up
  85. 90flat-rate-llm.kikoribera03.workers.dev/v1/util/selectorTurns a Solidity signature like transfer(address,uint256) into its 4-byte function selector and its 32-byte event topic0. What you need to build calldata by hand or to filter logs.$0.005 Base134 ms2 payers83% up
  86. 90flat-rate-llm.kikoribera03.workers.dev/v1/weather/nowCurrent conditions for any point on Earth, taken from the Norwegian Meteorological Institute's official forecast model rather than a commercial aggregator. Returns temperature, humidity, pressure, wind speed and bearing, cloud cover and the next hour's precipitation, plus the exact model run it came from and the units the institute itself declares, so the figure can be cited and checked instead of merely trusted.$0.01 Base230 ms2 payers83% up
  87. 90api.magentlab.com/api/calc/killipKillip and Kimball 1967 myocardial-infarction heart-failure class 1-4 as assigned by the caller. Returns the published class, description (no heart failure; S3 and basilar rales; pulmonary edema; cardiogenic shock), and 1967 CCU hospital mortality (6%, 17%, 38%, 81%). Not a diagnosis; magent does not examine the patient. Not GRACE or contemporary registry mortality.$0.005 Base1278 ms2 payers100% up
  88. 90flat-rate-llm.kikoribera03.workers.dev/v1/red/certEvery currently valid TLS certificate publicly issued for one domain, read from the Certificate Transparency logs: issuer, validity window, days to expiry, revocation status and every hostname each certificate covers. It reports what was ISSUED, which is how you find certificates you did not know existed - not what the server is serving today. No API key, no account.$0.005 Base81 ms2 payers83% up
  89. 90flat-rate-llm.kikoribera03.workers.dev/v1/evm/token-priceSpot price of any ERC20 read straight from the deepest Uniswap V3 pool against USDC, on Base, Ethereum, Polygon, Arbitrum or Optimism. Returns the pool address, fee tier, liquidity, sqrtPriceX96, tick and block, so the number can be audited instead of trusted. No aggregator and no API key: the source is the chain itself. Via eth_call.$0.005 Base49 ms2 payers83% up
  90. 90flat-rate-llm.kikoribera03.workers.dev/v1/crypto/sanctionsChecks one crypto address against the OFAC SDN list published by the US Treasury, across 16 currencies including Ethereum, Bitcoin, Tron and USDT. A hit returns the actual list entry - sanctioned entity, its type and its sanctions programmes - not a risk score. Exact matching only, never fuzzy. Every answer carries the publication date of the list snapshot. No API key, no account.$0.01 Base68 ms2 payers83% up
  91. 90www.x402pulse.dev/v1/attention/marketsAttention meets prediction markets: topics trending or spiking on Wikipedia matched to open Polymarket markets, each with prices and the skilled-trader lean from x402Pulse scoring. Find markets the public is suddenly paying attention to. Data, not investment advice.$0.003 Base1026 ms2 payers100% up
  92. 90www.x402pulse.dev/v1/attention/topicAttention history for any topic: daily Wikipedia pageviews of one article (a company, person, drug, coin or event) for 7 to 90 days, with its baseline, latest day vs. baseline, spike days and 7-day trend. Use the exact article title, e.g. Bitcoin. Based on Wikimedia pageview data (CC0).$0.001 Base1079 ms2 payers100% up
  93. 90www.x402pulse.dev/v1/attention/trendingTrending topics: yesterday's most-viewed Wikipedia articles in any language, cleaned of site pages, with rank change vs. the day before, new entries, week-long regulars, and likely automated surges flagged separately. A daily read of what people are paying attention to. Based on Wikimedia pageview data (CC0).$0.002 Base1044 ms2 payers100% up
  94. 90www.x402pulse.dev/v1/health/drug-safetyFDA drug safety snapshot for any drug (brand or generic name): total adverse event reports, share serious and fatal, most-reported side effects and the quarterly report trend from FDA FAERS. Reports are not proof of causation. Data, not medical advice.$0.001 Base1196 ms2 payers100% up
  95. 90api.onhub.ai/v1/codeWrites and runs Python to compute or verify an answer, returning the code, its output, and a final answer.$0.015 Base1072 ms2 payers100% up
  96. 90api.vextorium.com/sol-dominio-pagoResolve a Solana Name Service .sol domain to its owner wallet, read directly on-chain (NFT-tokenized domains resolve to the NFT holder).$0.003 Base354 ms2 payers92% up
  97. 90api.vextorium.com/sol-dominio-inverso-pagoPrimary (favourite) .sol domain of a Solana wallet, read on-chain and checked that the wallet still owns it.$0.003 Base310 ms2 payers92% up
  98. 90api.vextorium.com/revisar-firma-pagoExplain an EIP-712 typed-data signature before signing it: x402/EIP-3009 payment authorizations, EIP-2612 permits, Permit2 and Seaport orders. Flags unlimited allowances, long validity and non-official tokens, and returns the exact hash to compare with your wallet.$0.005 Solana389 ms2 payers92% up
  99. 90dartapi.ljaysk.com/v1/eventsKorean corporate disclosure (DART) event stream, cursor-based delta. All filings, classified with importance score.$0.002 Base1322 ms2 payers100% up
  100. 90hyperliquid-x402.rajdeep-dutta-in.workers.dev/marketHyperliquid perpetual market data for AI agents — returns mark price, oracle price, funding, open interest, and best bid/ask for any listed perpetual asset.$0.01 Base Sepolia1241 ms2 payers100% up