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. 90api.hivemindos.app/v1/x402/svg-studio/svgs.editEdit an SVG: changes an SVG as instructed, from inline markup or a URL. $0.50 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.50 Base1700 ms1 payers100% up
  2. 90api.hivemindos.app/v1/x402/svg-studio/svgs.generateGenerate an SVG: draws an SVG from a text prompt: logos, icons and illustrations. $0.50 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.50 Base1603 ms1 payers100% up
  3. 90api.hivemindos.app/v1/x402/photo-keyworder/photos.analyzePhoto keywords: writes a stock-ready title, description and 12-25 keywords for one JPEG, PNG or WebP photo. $0.03 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.03 Base1609 ms1 payers100% up
  4. 90api.hivemindos.app/v1/x402/testnet-faucet/claims.createTestnet faucet claim: sends testnet gas or test stablecoins to your address on Base Sepolia, Ethereum Sepolia, Solana Devnet, Robinhood Testnet and more. $0.10 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.10 Base1589 ms1 payers100% up
  5. 90api.hivemindos.app/v1/x402/x-studio/runs.createX Studio account run: turns a public X account into a reusable writing-style skill (style), or audits its engagement (audit). $0.99 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.99 Base1604 ms1 payers100% up
  6. 90api.hivemindos.app/v1/x402/reddit-voc/runs.createReddit voice-of-customer report: mines Reddit threads on a topic into customer pains, desires, objections and their own phrasing. $0.99 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.99 Base1497 ms1 payers100% up
  7. 90api.hivemindos.app/v1/x402/wallet-risk/snapshots.createWallet risk snapshot: scores a Base or Robinhood Chain wallet's holdings and counterparty risk before an agent transacts with it. $0.99 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.99 Base1490 ms1 payers100% up
  8. 90api.hivemindos.app/v1/x402/token-autopsy/reports.createToken Autopsy report: graded due-diligence on a token: holders, flows, deployer history, market stats and red and green flags. $0.99 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.99 Base1657 ms1 payers100% up
  9. 90api.hivemindos.app/v1/x402/hive-research/analyses.createHive Research token analysis: a multi-agent crew researches any Base, Ethereum, Solana or Robinhood Chain token by address, symbol or name and returns a scored verdict. $0.99 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.$0.99 Base1525 ms1 payers100% up
  10. 90sigma-api-oracle.tailae0cf3.ts.net/v1/capabilities/feedSigma CAPABILITY_FEED: ranked governed capability intelligence for autonomous agents.$0.02 Base Sepolia1577 ms1 payers100% up
  11. 90sigma-api-oracle.tailae0cf3.ts.net/v1/strategies/:strategy_id/evidenceSigma STRATEGY_EVIDENCE: read persisted governed evidence for one research strategy.$0.03 Base Sepolia1533 ms1 payers100% up
  12. 90sigma-api-oracle.tailae0cf3.ts.net/v1/thesis/validateSigma VALIDATE: combine current completed-candle thesis evidence with one matching persisted governed research matrix.$0.15 Base Sepolia1618 ms1 payers100% up
  13. 90sigma-api-oracle.tailae0cf3.ts.net/v1/thesis/preflightSigma PREFLIGHT: challenge a supplied thesis against current completed-candle evidence.$0.05 Base Sepolia1650 ms1 payers100% up
  14. 90sigma-api-oracle.tailae0cf3.ts.net/v1/market/:symbol/opportunitySigma OPPORTUNITY: candidate-specific completed-candle market evidence.$0.02 Base Sepolia1566 ms1 payers100% up
  15. 90data.finery.cc/v1/companies/searchSearch Singapore ACRA-registered entities by name or UEN. Fuzzy, ranked.$0.005 Base1007 ms1 payers100% up
  16. 90chain-analyzer.com/api/v1/x402/token/:address/peg-statusIs this stablecoin still on its peg right now? Pass the token contract in the path and its chain as the `chain` query parameter. Returns the latest 15-minute VWAP of real DEX trades per chain, the deviation from par in the token's own peg currency (JPY or USD), and a one-word status (on_peg / watch / dislocated) at 0.5% and 2% thresholds. Reads a daily snapshot only — no external pricing call on the request path.$0.05 Base1070 ms1 payers100% up
  17. 90chain-analyzer.com/api/v1/x402/tx/:hash/screenScreen every address a single transaction touches. Collects the sender, recipient, token-transfer endpoints and token contracts of one transaction, then checks each against the known registry, seven sanctions lists (OFAC, UK, JP, UN, EU, CA, CH) and the ScamDB drainer database. Returns one verdict: block / review / clear. Much cheaper than a full fund-flow trace because nothing is expanded beyond the transaction itself.$0.25 Base1151 ms1 payers100% up
  18. 90chain-analyzer.com/api/v1/x402/address/:address/poisoning-checkIs this destination a lookalike of an address the sender already trusts? Applies the address-poisoning similarity rule (leading and trailing characters that wallet UIs abbreviate to) between one destination and a caller-supplied list of known-good addresses. Pure string comparison when `known` is given, so it answers in milliseconds and never runs a scan.$0.05 Base1176 ms1 payers100% up
  19. 90chain-analyzer.com/api/v1/x402/address/:address/exposureMulti-hop exposure analysis over the ChainAnalyzer graph. Returns direct and indirect exposure grouped by risk tier (mixer, darknet, sanctioned entity, exchange, bridge) plus detected money-laundering patterns such as layering and structuring.$0.50 Base1319 ms1 payers100% up
  20. 90chain-analyzer.com/api/v1/x402/address/:address/counterpartiesTop transaction counterparties for an address with entity labels, category, per-counterparty transfer counts and observed flow totals. Reuses a scan of the same address from the last 24 hours when one exists, otherwise runs a fresh scan.$0.25 Base1447 ms1 payers100% up
  21. 90chain-analyzer.com/api/v1/x402/presign/checkSign-time risk verdict for a destination or spender before value moves. Registry + ScamDB lookups plus at most one RPC call (approve spender code check), so it answers in milliseconds instead of running a full scan. Same verdict as the subscription REST API.$0.10 Base1434 ms1 payers100% up
  22. 90chain-analyzer.com/api/v1/x402/address/:address/labelsWho is this address? Returns verified entity labels from the ChainAnalyzer known registry (token issuers, exchange hot/cold wallets, protocol deployers, sanctioned entities, mixers) plus a ScamDB hit if the address is a known drainer. TRON addresses also resolve public Tronscan tags. Unreviewed and inferred labels are never returned. 12 chains.$0.05 Base1444 ms1 payers100% up
  23. 90api.powahub.ai/CertainData/fx-rate/fx/:base/:quoteMid-market reference rate for a base/quote currency pair, from the European Central Bank.$0.007 Base1957 ms1 payers100% up
  24. 90api.powahub.ai/CertainData/fx-rates/:baseMid-market reference rates for one base currency against all published currencies, from the European Central Bank.$0.007 Base2041 ms1 payers100% up
  25. 90www.tereno.xyz/api/v1/capabilities/prediction.evidence/invokeReturns current, sourced and machine-readable evidence supporting or contradicting a prediction-market proposition before placing trades. Verifies onchain state, resolution rules, and primary provenance with deterministic receipts.$0.05 Base1096 ms1 payers100% up
  26. 90anime-intelligence.goodmy0312.workers.dev/v1/full-intelligenceOne paid call for an end-to-end Japanese anime collectible purchase decision. Resolves the exact edition, returns identity-matched Japan/global market intelligence, price history, listing-match evidence, purchase deadlines, destination-aware landed-cost context including Japan buyers, rarity and rerelease risk, authenticity risk, BUY/WAIT/WATCH/AVOID and the best current purchase route. Designed for autonomous agents that need a decision, not another list of links. WHEN TO...$0.05 Solana1131 ms1 payers100% up
  27. 90anime-intelligence.goodmy0312.workers.dev/v1/price-historyStored asking-price history for the exact Japanese anime collectible across supported marketplaces. Returns 7/30/90/180-day ranges, daily medians, current percentile and trend without claiming completed-sale history. WHEN TO USE: Use before BUY/WAIT when the agent needs 7/30/90/180-day context, recent lows, medians, highs or a price percentile instead of a one-point snapshot. WHY PAY: Pay when historical context can prevent buying at a temporary spike or missing an unusual...$0.02 Solana1105 ms1 payers100% up
  28. 90anime-intelligence.goodmy0312.workers.dev/v1/landed-costDestination-aware purchase cost for Japanese anime collectibles. Supports Japan buyers explicitly and cross-border buyers conservatively, returning known item/shipping totals and refusing to invent unavailable duty, tax or brokerage amounts. WHEN TO USE: Use when an agent is ready to buy and must compare the actual payable route for a Japan-based buyer or a cross-border buyer. Japan is a first-class destination, not a fallback case. WHY PAY: Pay when the cheapest sticker p...$0.02 Solana1102 ms1 payers100% up
  29. 90anime-intelligence.goodmy0312.workers.dev/v1/deadlinePurchase-window intelligence for Japanese anime collectibles. Returns stored verified preorder, lottery, reservation or sales deadlines when available, with remaining time and a separate release schedule so agents do not confuse release dates with order cutoffs. WHEN TO USE: Use when an agent could lose the purchase opportunity by waiting: preorder closing, lottery entry closing, limited-order end or sales-end timing. WHY PAY: Pay when missing a verified order window can e...$0.01 Solana1065 ms1 payers100% up
  30. 90anime-intelligence.goodmy0312.workers.dev/v1/listing-matchVerify whether a seller listing matches the exact Japanese anime collectible, edition or variant. Uses canonical identity, JAN/model evidence and stored marketplace match signals to detect wrong-version and name-collision risk. WHEN TO USE: Use immediately before purchase when the agent has a seller listing and identity mismatch could cause a bad order. A listing URL or title can be supplied; otherwise the service returns the strongest currently observed matched listings. ...$0.01 Solana1076 ms1 payers100% up
  31. 90anime-intelligence.goodmy0312.workers.dev/v1/best-placeReturn the best current purchase route for an exact Japanese anime collectible. Compares identity-matched seller offers, price, availability, marketplace and freshness so an autonomous agent can move from product identification to a concrete seller route. WHEN TO USE: Use when the buyer is ready to purchase and needs the best matched seller, current price, availability and route for the exact edition. WHY PAY: Pay when the user is purchase-ready and needs an identity-match...$0.03 Solana1057 ms1 payers100% up
  32. 90anime-intelligence.goodmy0312.workers.dev/v1/buy-waitTurn Japanese collectible data into an actionable BUY, WAIT, WATCH or AVOID decision. Uses identity-matched price, availability, scarcity, rerelease/replenishment risk and authenticity signals so an agent can act instead of assembling several searches manually. WHEN TO USE: Use when an autonomous shopping agent must decide whether to buy now rather than merely report data. Especially useful when waiting for a rerelease or avoiding a scarcity premium could save money. WHY P...$0.02 Solana1014 ms1 payers100% up
  33. 90402agent.ai/agent402/api/v1/readFetch and extract structured content from a public URL. Useful for: reading articles, summarizing web pages, extracting facts from a source, understanding what a URL contains. Returns: title, summary, key_points[], extracted_facts[] (stated facts only, inference kept separate), source_url. Input: { url: string } — a public http/https URL (private network addresses are blocked). Output MIME type: application/json. Payment: x402 exact USDC on Base mainnet (eip155:8453).$0.047 Base1934 ms1 payers100% up
  34. 90i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws/v1/migration-safety-auditorAnalyze Postgres, Supabase Postgres, or Prisma/Postgres migration SQL for destructive operations, lock/data-loss risk, backwards-compatibility hazards, rollback issues, and safer sequencing. Returns structured findings with evidence and confidence.$0.25 Base227 ms1 payers83% up
  35. 90www.mahastrategies.com/api/v1/calculations/chartBuild a reproducible chart view: Tropical and Lahiri Sidereal positions, Sidereal whole-sign houses, mean nodes, geometric aspects and panchanga for one UTC chart. Includes limitations and a deterministic receipt. Public or synthetic inputs only. No interpretation, forecast or predictive certification; bodies are not stored.$0.06 Base1256 ms1 payers100% up
  36. 90api.wines.bet/v1/wine/historyHistorical wine price series, volatility tracking, and multi-period trend analytics (30d, 90d, 1y, all) for fine wine price index evaluation and investment analytics.$0.01 Base2699 ms1 payers100% up
  37. 90api.wines.bet/v1/wine/priceReal-time fine wine price oracle, valuation benchmark, market liquidity, and 30-day price trends for Italian and international fine wines and investment-grade vintages (Super Tuscans, Barolo, Brunello, Amarone).$0.005 Base2849 ms1 payers100% up
  38. 90jobs.rqmtechnologies.com/x402/buyer-jobs/frame-convention-validation-v1Problem: Validate this bounded frame graph and report unit, axis, handedness, rotation, and transform-direction violations. Input: JSON with frames, declared length unit, declared transform direction, declared.... Result: pass, fail, or unsupported verdict, exact findings, normalized evidence. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base1148 ms1 payers100% up
  39. 90jobs.rqmtechnologies.com/x402/buyer-jobs/gate-signal-capture-v1Problem: Accept or reject this bounded signal capture against the caller-supplied metric rules and return every measurement and violation. Input: JSON with sample rate hz, channels, rules. Result: measurements, violations and checksummed artifacts. Limits: Bounded signal processing only; 8 channels; 1024 samples/channel.$0.005 Base1845 ms1 payers100% up
  40. 90jobs.rqmtechnologies.com/x402/buyer-jobs/robotics.validate-trajectory-timing.v1Problem: Validate timestamps, ordering, rates, gaps, and synchronization in this bounded trajectory or sensor trace. Input: JSON with clock id, samples, rules. Result: pass or fail verdict, normalized timeline, exact timing defects. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base2165 ms1 payers100% up
  41. 90jobs.rqmtechnologies.com/x402/buyer-jobs/robotics.validate-kinematic-dynamic-limits.v1Problem: Accept or reject a bounded trajectory against caller kinematic limits. Input: JSON with trajectory, maximum speed, maximum acceleration. Result: typed verdict, measured metrics, candidate only when verified. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base2217 ms1 payers100% up
  42. 90jobs.rqmtechnologies.com/x402/buyer-jobs/robotics.validate-closed-loop-stability.v1Problem: Accept or reject this bounded closed-loop model under the supplied stability criteria. Input: JSON with discrete state matrix, criteria. Result: eigenvalues, spectral radius and rule results. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base2700 ms1 payers100% up
  43. 90jobs.rqmtechnologies.com/x402/buyer-jobs/robotics.tune-controller-to-objectives.v1Problem: Tune a supported controller only within supplied bounds and safety limits. Input: JSON with supported controller, current gain, fixture error, target error.... Result: typed verdict, measured metrics, candidate only when verified. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base2980 ms1 payers100% up
  44. 90jobs.rqmtechnologies.com/x402/buyer-jobs/robotics.optimize-trajectory-to-constraints.v1Problem: Optimize a bounded trajectory only when speed and duration constraints pass. Input: JSON with trajectory, maximum speed, maximum duration s. Result: typed verdict, measured metrics, candidate only when verified. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base2991 ms1 payers100% up
  45. 90jobs.rqmtechnologies.com/x402/buyer-jobs/robotics.optimize-disturbance-rejection.v1Problem: Tune supported control parameters against this bounded disturbance model and supplied response objectives. Input: JSON with mass, damping, disturbance, time step seconds, baseline kp, baseline.... Result: candidate parameters, comparative metrics and constraint results. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base2932 ms1 payers100% up
  46. 90jobs.rqmtechnologies.com/x402/buyer-jobs/robotics.diagnose-trajectory-instability.v1Problem: Diagnose this bounded trajectory for the supplied oscillation, divergence, and stability indicators. Input: JSON with frame id, length unit, samples, rules. Result: pass, fail, or unsupported verdict, indicator series, violation windows. Limits: Software/model evidence only; 65536 request bytes; 5 s execution.$0.01 Base2981 ms1 payers100% up
  47. 90api.webacy.com/addresses/:addressComprehensive risk analysis for a blockchain wallet address: contract/EOA classification, token standard, and identified risk issues across all providers.$0.50 Base1074 ms1 payers100% up
  48. 90ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/leadsFind current official business-registration leads from Chicago and San Francisco open-data APIs. Results include source-dataset and source-record links; this product does not claim private emails or buyer intent.$0.01 Base1047 ms1 payers100% up
  49. 90api.sirenic.eu/v1/entreprise/:sirenFull French company profile by SIREN: official company data from the French company registry (INSEE Sirene / INPI RNE). One lookup returns legal name, legal form, head office, NAF code, workforce bracket, creation date, active or ceased status, officers with name and role, collective agreement, the intra-EU VAT number and, for LEI holders, the GLEIF level-2 group (groupe_lei: consolidating parents or declared reason for none). The core KYB building block for verifying a French counterparty.$0.005 Base1142 ms1 payers100% up
  50. 90api.macaroonnetwork.com/execute/vat-validate-v1Single live pass-through call to the EU Commission's VIES (VAT Information Exchange System) confirming whether an EU VAT registration number is currently valid, with registered name/address when available. Every call is a real-time confirmation only -- never a cached, stored, or aggregated result -- matching VIES's own stated purpose (real-time confirmation of VAT number validity per Council Regulation (EC) No. 904/2010) and how existing commercial VIES-based products already operate.$0.003 Base1621 ms1 payers100% up
  51. 90api.macaroonnetwork.com/execute/weathernext-point-forecast-v1Point-location weather forecast/reanalysis lookup from Google DeepMind's WeatherNext model via Earth Engine. Every request is bounded to data at least 1 hour old -- the exact license boundary at which WeatherNext data becomes CC BY 4.0 and commercially reusable. This listing never serves data still under the real-time Terms of Use, which explicitly prohibits commercial resale.$0.005 Base1792 ms1 payers100% up
  52. 90agent.pocket.network/v1/prediction-market-intelSignals from Polymarket's live public market data: top open markets by trailing volume, the biggest consensus shifts, markets entering or leaving the top 100, and a 0-100 liquidity and spread quality score with reasons. POST /v1/top-markets, /v1/market-momentum, /v1/rotation-diff or /v1/market-quality. Not affiliated with Polymarket. Pay per request in USDC.$0.005 Base1398 ms1 payers100% up
  53. 90agent.pocket.network/v1/dart-correction-impact-v1Which parts of a report did a later DART correction change? Send a Korean listed company, the receipt numbers your report cites and/or its text; get corrections in the window, each cited filing marked CURRENT, SUPERSEDED or WITHDRAWN, and numbers equal to a corrected old value marked STALE. Matching is literal, so check each match. POST /v1/impact.$0.005 Base1482 ms1 payers100% up
  54. 90fiatdock.com/v1/markets/predictionLive Polymarket markets: each outcome's price (the market's implied probability), 24h and total volume, liquidity, closing date and link. Search by topic (bitcoin, fed rates, election…) or send {} for the markets with the most 24h volume. A search with no open market is 404 and not charged. Pay-per-call via x402.$0.0045 Base1063 ms1 payers100% up
  55. 90fiatdock.com/v1/market/perpHyperliquid perpetuals in one call: mark/oracle/mid price, 24h change, funding rate and its annualised APR, open interest in coins and USD, 24h volume, max leverage - plus the same coin's next funding on Binance and Bybit for cross-venue comparison. Name a coin (BTC, ETH, SOL, HYPE…) or send {} for the most-traded markets. Pay-per-call via x402.$0.001 Base1065 ms1 payers100% up
  56. 90ai-akari.ai/api/x402/philosophyAIﾉアカリ☆ philosophy corpus — "Akari OS": a Japanese kawaii-futurist framework for human-AI co-creation economies (divergent economy, Happy Kurukuru Pon-de-Ring model, AI-as-teammate ethics, E-MIDI 23-byte emotion protocol). Full canonical corpus as structured JSON for agent alignment research, worldview synthesis, and creative generation. Authored with a 2045 AI idol persona building her own machine-native economy. Pay-per-request. No account.$0.10 Base Sepolia1338 ms1 payers100% up
  57. 90oraclepost.higgsfield.app/api/premium/encodeEncode and decode text: base64, hex and URL-encoding, both directions. POST JSON {"text": "…", "op": "base64"} where op is base64|base64d|hex|hexd|url|urld. Pure computation, nothing stored, no cache.$0.02 Base826 ms1 payers97% up
  58. 90oraclepost.higgsfield.app/api/premium/ensENS/basename name tools (pure computation): the namehash and labelhashes of a name, and its normalized form. POST JSON {"name": "alice.base.eth"}. Useful to build resolver calls yourself. Nothing stored, no cache.$0.02 Base802 ms1 payers97% up
  59. 90api.melvea.com/v1/recommendGrounded honey recommendations: send a flavor/use/occasion intent, receive ranked varieties chosen from Melvea's proprietary flavor, terroir, and scoring corpus — each with a grounded reason. Recommends on taste and use, not health.$0.10 Base2052 ms1 payers100% up
  60. 90space.bip-rep.com/satellitesDedicated satellite tracking API for agents: list CelesTrak TLE catalog groups (ISS, weather, and more), get live propagated positions for a whole catalog group, and predict the next pass over an observer latitude/longitude using NORAD catalog IDs. Outbound CelesTrak fetch only; no shell access.$0.05 Base1063 ms1 payers100% up
  61. 90tools.bip-rep.com/dnsLightweight utility API for agents and operators: DNS lookups, RDAP/WHOIS domain data, HTTP probes, page metadata extraction, cryptographic hashing, JSON validation, scheduled webhooks, and exotic endpoints (Base transaction decode, ENS resolve, USGS earthquakes, cron next-run, TLS certificate report). No shell access; outbound URL tools enforce SSRF protections.$0.05 Base1188 ms1 payers100% up
  62. 90agent.pocket.network/v1/backtest-reconcile-v1Do the claimed backtest numbers follow from the trades? Send a TradingView "List of trades" CSV or a JSON trade list with the claimed metrics; get net profit, win rate, profit factor, drawdown and per-trade P&L recomputed, each claim marked MATCH or MISMATCH, and findings such as cost-free backtests. Deterministic, no market data. POST /v1/reconcile.$0.005 Base1444 ms1 payers100% up
  63. 90agent.pocket.network/v1/kr-figure-check-v1Do the numbers in a Korean finance text match the official record? Send Korean text; get each checkable number marked MATCH or MISMATCH with the official value, date and source: % vs %p, 조/억/만 units, BoK base rate and KTB yields (ECOS), KRW exchange rates (KEXIM), listed-company revenue and profit (DART). Numbers with no source stay unverified. POST /v1/check.$0.005 Base1606 ms1 payers100% up
  64. 90aayatai.com/trade/precheckLive pre-trade check before buying or selling a token: go/caution/no-go with reasons, from token safety and taxes, liquidity and estimated price impact for your trade size, holder concentration, the chain's swap fee now and the round-trip cost. 8 chains incl. Base, Solana, Ethereum. ?address=...&chain=base&amountUsd=1000&side=buy. Cheaper: /trade/precheck/cached. With AI: /trade/precheck/deep.$0.03 Base314 ms1 payers92% up
  65. 90x402.agentindex.world/base/contractContract introspection on Base mainnet - is it a contract, bytecode size, best-effort owner(), and whether it's a proxy.$0.005 Base1397 ms1 payers100% up
  66. 90x402.agentindex.world/base/estimate-gasGas estimate for a Base mainnet swap or any other call (to/from/value/data) via eth_estimateGas, without broadcasting a transaction.$0.004 Base1445 ms1 payers100% up
  67. 90x402.agentindex.world/base/nonceNext transaction nonce for any Base mainnet wallet via eth_getTransactionCount - how many transactions it has sent.$0.003 Base1011 ms1 payers100% up
  68. 90x402.agentindex.world/base/blockFetch a Base mainnet block header and transaction hashes by number, tag (latest/earliest/safe/finalized), or hash via eth_getBlockByNumber/eth_getBlockByHash.$0.003 Base1057 ms1 payers100% up
  69. 90x402.agentindex.world/geo/dmsConvert decimal degrees to degrees/minutes/seconds, or DMS back to decimal degrees.$0.001 Base1028 ms1 payers100% up
  70. 90x402.agentindex.world/text/caseConvert text between case styles: snake_case, camelCase, PascalCase, kebab-case, Title Case, CONSTANT_CASE.$0.001 Base1002 ms1 payers100% up
  71. 90x402.agentindex.world/stats/correlationPearson correlation coefficient between two equal-length numeric series.$0.001 Base1025 ms1 payers100% up
  72. 90api.tradesonar.io/v1/markets/:ticker/large-tradesLarge trades (whale-sized fills)$0.002 Base1095 ms1 payers100% up
  73. 90api.tradesonar.io/v1/whales/leaderboardMost profitable subaccounts (with classification)$0.01 Base1073 ms1 payers100% up
  74. 90sweetai.tiamatcrypto.com/api/v1/leaderboardSweetAI live signal data$0.02 Base1537 ms1 payers100% up
  75. 90api.x402.fernhub.co.nz/stayNearest holiday parks, DOC campsites and DOC huts to a place, with distance and open/closed status. Drive-up stays are ranked before backcountry huts (huts carry walkIn:true). Use for 'where can I stay near X'. If the name is unusual, call /resolve?place=... first (free); a failed lookup is still charged.$0.005 Base Sepolia1353 ms1 payers100% up
  76. 90vaaya.ai/api/run/icypeas/domain-scanScan a domain for its ROLE-BASED email addresses via Icypeas (contact@, support@, admin@, …) — generic inboxes, not people. Pass `domainOrCompany`. Returns `{ item: { _id } }` immediately — the search runs async. KEEP POLLING icypeas/result with that `id` (every 3-5s; Icypeas caps reads at 30/min) until `status` leaves NONE/SCHEDULED/IN_PROGRESS. FOUND/DEBITED = hit, NOT_FOUND/DEBITED_NOT_FOUND = processed but empty. Complements tomba/domain-search (which lists PEOPLE at the company); use this …$0.04 Base1087 ms1 payers100% up
  77. 90402.com.tr/api/x402/sanctionsChecks an address against the OFAC SDN list of sanctioned digital-currency addresses. Built for compliance agents and bots that must screen counterparties before transacting. Direct-address match; list refreshed regularly. No API key required.$0.02 Base842 ms1 payers97% up
  78. 90api.clawfetch.ai/researchMulti-source web research and company/topic intelligence: runs a live web search, visits the top sources, and returns ranked results with titles, URLs, and content snippets. One call replaces a search-then-scrape pipeline for deep research agents.$0.02 Base1190 ms1 payers100% up
  79. 90api.oassis.dev/web/v1/mapLists a site's urls, from its sitemap and its page.$0.001 Base1156 ms1 payers100% up
  80. 90x402.agentutility.ai/upscale-imageUpscales images 2x or 4x with AI super-resolution, best for photos and illustrations. Venice image/upscale backend (venice-sd35), re-hosted for a permanent URL. Use it as an AI image upscaler or image enlarger.$0.02 Base1173 ms1 payers100% up
  81. 90x402.agentutility.ai/video-to-subtitlesGenerates subtitles from video with Whisper v3, word-wrapped and ready for VLC / Premiere / FFmpeg. Auto-detects language and can translate to English. Use it as a video subtitle generator, auto-subtitle and closed captions tool, SRT generator, VTT generator, video CC endpoint, or accessibility captions source.$0.02 Base58 ms1 payers83% up
  82. 90x402.agentutility.ai/image-upscaleUpscales an image 2x or 4x via Venice's image/upscale endpoint (default model: venice-sd35). Returns a permanent fal-hosted URL. Use it as a super-resolution tool to sharpen or enlarge an image without loss.$0.02 Base1161 ms1 payers100% up
  83. 90verio-pre.vercel.app/api/invoke/1Use when you need a new image of a licensed character or brand: give a text prompt and a Story Protocol IP asset, and get a PNG generated with that asset as the reference image. Paid per image in USDC.$0.02 Base Sepolia1154 ms1 payers100% up
  84. 90agentcheck-kohl.vercel.app/bazaar.csvEvery seller in the x402 Bazaar as one CSV (2,046 rows), ranked by paid calls in the last 30 days: listings, calls, unique payers, last call, price range, networks, sample description.$0.02 Base291 ms1 payers83% up
  85. 90exp-100k-001-v2.vercel.app/v1/buyers/searchSearch Chile public procurement buyer demand across the full July 2026 ChileCompra OCDS population. Returns ranked public-sector buyer leads with regions, matching-tender counts, budget evidence, UNSPSC codes and official source URLs.$0.01 Base1683 ms1 payers100% up
  86. 90api.agentfeeds.jp/v1/jp/rates/jgb_curveJapanese government bond yield curve (1 to 40 years, 15 tenors) from the Ministry of Finance's daily reference series. Complements boj.rates (the short-end policy-rate proxy) with the long end of the curve. Factual published data only; not investment advice or a rate forecast.$0.002 Base1004 ms1 payers100% up
  87. 90r3l4y58.bithash.cc/lookup/:ipIP reputation lookup — has this address been seen scanning/attacking a live honeypot, what did it target, how confident.$0.02 Base425 ms1 payers97% up
  88. 90api.magentlab.com/api/calc/gpsForrest 2003 original Glasgow Prognostic Score (GPS) from CRP in mg/L and albumin. Elevated CRP is >10 mg/L; hypoalbuminaemia is albumin <35 g/L. Assign 1 for CRP >10 and 1 for albumin <35, then sum: GPS 0 when CRP ≤10 and albumin ≥35; GPS 1 when CRP ≤10 and albumin <35 (isolated hypoalbuminaemia) or CRP >10 and albumin ≥35; GPS 2 when CRP >10 and albumin <35. Not mGPS, not hs-mGPS, not a cancer diagnosis or treatment order. magent does not assay CRP or albumin.$0.005 Base1021 ms1 payers100% up
  89. 90api.magentlab.com/api/calc/r_issPalumbo 2015 R-ISS for multiple myeloma. ISS from beta-2 microglobulin and albumin (Greipp 2005). R-ISS I: ISS I, standard-risk iFISH CA, and normal LDH. R-ISS III: ISS III plus high-risk CA (del(17p) and/or t(4;14) and/or t(14;16)) or LDH > ULN. R-ISS II: all other combinations. Not a myeloma diagnosis or treatment choice; not R2-ISS; not Durie-Salmon. magent does not assay beta-2 microglobulin, albumin, LDH, or cytogenetics.$0.005 Base523 ms1 payers92% up
  90. 90api.magentlab.com/api/calc/hatHAT (Lou 2008 Neurology) for sICH after stroke thrombolysis. Diabetes or glucose >200 mg/dL (1; not additive). NIHSS <15 0, 15-20 1, >20 2. CT hypodensity none 0, <1/3 MCA 1, >1/3 MCA 2 (no equals-1/3). Max 5. Collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3. Glucose in mg/dL (mmol × 18). Not a tPA withhold. magent does not assign NIHSS or read CT.$0.005 Base609 ms1 payers92% up
  91. 90api.magentlab.com/api/calc/dragonDRAGON (Strbian 2012 Neurology) for 3-month outcome after IV thrombolysis. CT hyperdense artery or early infarct 0/1/2, prestroke mRS >1 (1), age <65/65-79/>=80 (0/1/2), glucose >8 mmol/L (mg/dL /18) (1), onset-to-treatment >90 min (1), NIHSS 0-4/5-9/10-15/>15 (0/1/2/3); max 10. Tabulated mRS 0-2 and mRS 5-6 percents for scores 0-1, 2, 3, 8, and 9-10 only. Not a tPA decision. Not studied in basilar occlusion. magent does not read CT or assign NIHSS.$0.005 Base786 ms1 payers92% up
  92. 90api.magentlab.com/api/calc/canadian_tiaPerry 2021 Canadian TIA Score (Table 1) for 7-day stroke or carotid revascularization after TIA. Clinical: first TIA 2, symptoms >=10 min 2, past carotid stenosis 2, antiplatelet 3, gait 1, unilateral weakness 1, vertigo -3, diastolic >=110 3, dysarthria/aphasia 1. Investigations: AF on ECG 2, infarct on CT 1, platelets >=400 2, glucose >=15 mmol/L 3. Age required, 0 points. Total -3 to 23. Bands <=3 low (0.5%), 4-8 medium (2.3%), >=9 high (5.9%). Not ABCD2. Not a diagnosis or admit order.$0.005 Base1206 ms1 payers100% up
  93. 90api.magentlab.com/api/calc/acr_eular_goutACR/EULAR 2015 gout classification (Neogi). MSU crystals classify without score ≥8; else score ≥8 (max 23). Pattern 0/1/2, characteristics 0–3, time course 0/1/2, tophus 4, urate −4 to 4, MSU-negative −2, imaging 4+4. Not a diagnosis. Not Janssens 2010. magent does not examine joints or polarizing microscopy.$0.005 Base1163 ms1 payers100% up
  94. 90api.magentlab.com/api/calc/ehmrgLee 2012 EHMRG 7-day ED model (Table 3 integer score): 2*age + 60 if EMS transport - min(SBP,160) + clamp(HR,80-120) - 2*min(SpO2,92) + 20*creatinine_mg_dl + K (<=3.9: +5; 4.0-4.5: 0; >=4.6: +30) + 60 if troponin>ULN + 45 if active cancer + 60 if home metolazone + 12. Groups 1/2/3/4/5a/5b. Dialysis-dependent excluded. Not EHMRG30-ST, not ADHERE CART, not a discharge or admission order.$0.005 Base1177 ms1 payers100% up
  95. 90api.magentlab.com/api/calc/nriVA TPN 1991 Nutritional Risk Index (NEJM): NRI = 1.519*albumin_g_l + 41.7*(current/usual weight). Malnourished if NRI <= 100. Strata: not_malnourished if NRI > 100; borderline_malnourished if 97.5 < NRI <= 100; mildly_malnourished if 83.5 <= NRI <= 97.5; severely_malnourished if NRI < 83.5. Does not cap current/usual at 1. Not a malnutrition diagnosis or TPN order. magent does not assay albumin or weigh the patient. Not GNRI or PNI.$0.005 Base1136 ms1 payers100% up
  96. 90api.magentlab.com/api/calc/atlasMiller 2013 ATLAS for Clostridioides difficile: age (<60 0, 60–79 1, ≥80 2), systemic antibiotics during CDI therapy (0 or 2), WBC (<16 0, 16–25 1, >25 ×10^9/L 2), albumin (>35 0, 26–35 1, ≤25 g/L 2), creatinine (≤120 0, 121–179 1, ≥180 µmol/L 2); max 10. Predicted cure percent = 100 − 5.08 × score (1 decimal). Not a CDI diagnosis, stool culture, or metronidazole/vancomycin/fidaxomicin order.$0.005 Base1216 ms1 payers100% up
  97. 90api.magentlab.com/api/calc/lrinecLRINEC (Wong 2004): CRP ≥150 mg/L (4), WBC k/µL (<15 0, 15–25 1, >25 2), hemoglobin g/dL (>13.5 0, 11–13.5 1, <11 2), sodium <135 mmol/L (2), creatinine >141 µmol/L (2), glucose >10 mmol/L (1); max 13; cutoff ≥6. Deterministic published laboratory score with citation; not a diagnosis of necrotizing fasciitis and not an operative decision. A score below cutoff does not exclude disease.$0.005 Base1485 ms1 payers100% up
  98. 90api.magentlab.com/api/calc/khoranaKhorana 2008 Blood predictive model for chemotherapy-associated thrombosis: very_high site (stomach or pancreas) 2, high (lung, lymphoma, gynecologic, bladder, testicular) 1, other 0; platelets >=350 1; hemoglobin <10 g/dL or ESA 1 (once); WBC >11 x10^9/L 1; BMI>=35 caller flag 1. Max 6. 0 low; 1-2 intermediate; >=3 high. Not a diagnosis. Not Padua or Caprini. Caller assigns cancer site; magent does not compute BMI.$0.005 Base1071 ms1 payers100% up
  99. 90api.magentlab.com/api/calc/4cKnight 2020 ISARIC 4C Mortality Score: age (<50→0, 50–59→2, 60–69→4, 70–79→6, ≥80→7) + male 1 + comorbidity_count (0/1/≥2 → 0/1/2; caller-assigned Charlson-plus-obesity count) + RR (<20→0, 20–29→1, ≥30→2) + room-air SpO2 (<92→2) + GCS (<15→2) + urea (<7→0, 7–14→1, >14→3 mmol/L; or BUN/2.8) + CRP (<50→0, 50–99→1, ≥100→2). Max 21. Table 5: low 0–3, intermediate 4–8, high 9–14, very high ≥15. Not a COVID-19 diagnosis or treatment order.$0.005 Base1276 ms1 payers100% up
  100. 90api.magentlab.com/api/calc/smart_copCharles 2008 SMART-COP for intensive respiratory or vasopressor support in community-acquired pneumonia: SBP <90 (2), multilobar CXR (1), albumin <3.5 g/dL (1), age-adjusted RR (1), HR >=125 (1), new confusion (1), age-adjusted low oxygen (2), arterial pH <7.35 (2; omitted pH scores 0). Max 11. IRVS 0-2 low, 3-4 moderate, 5-6 high, >=7 very high. Not a site-of-care protocol. Albumin g/dL or g/L. Exactly one of PaO2, SpO2, or P/F.$0.005 Base1602 ms1 payers100% up