x402watch

53,113 paid endpoints are listed. 31,940 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 2026-10-05 15:08 UTC · 53,113 probed

31,940 answering 40215,003 down5,345 rejecting825 no paywall1,219 price drift
  1. 91api.govparse.io/v1/feeds/rcra-handlersWhat does the full RCRAInfo hazardous-waste handler roster look like, handler by handler? Bulk feed over EPA RCRAInfo in handler-id order: facility, city, state, generator status, roles (LQG/SQG/VSQG/transporter/TSDF), and NAICS — a large-quantity generator or TSDF is an EHS-services / environmental-consulting target. Flat rows, cursor-paginated up to 1000/page, filterable by state, generator status, NAICS, or LQG/TSDF/transporter flags. A standing roster (no per-record registration date).$25.00 Basedown1 payers93% up
  2. 91api.govparse.io/v1/feeds/clinical-trialsWhich companies just opened a new clinical trial or site? Bulk feed over NIH ClinicalTrials.gov interventional, industry-sponsored studies, newest-first by registry-posting date (the R&D / commercial-growth signal). Cursor-paginated up to 1000/page, filterable by sponsor, phase, status, condition, intervention type, site state, or since. Rows carry sponsor, phase, status, conditions, enrollment, dates, site count, and the US states sited. Observational registry records, never a prediction.$25.00 Basedown1 payers93% up
  3. 91api.govparse.io/v1/feeds/subawardsWhich companies just received a federal subaward — and which are getting their FIRST one? Bulk feed over USAspending subawards (the File F prime→sub cascade), newest-first by action date: sub-recipient, prime, agency, amount (banded), NAICS, and date. new_only isolates first-time subawardees (no prime award on record) — the new-to-govcon growth signal. Flat rows, cursor-paginated up to 1000/page, filterable by state, NAICS, agency, minimum amount, or since. Observational public records as filed.$25.00 Basedown1 payers93% up
  4. 91api.govparse.io/v1/feeds/warning-lettersWhich firms just received an FDA Warning Letter — an open compliance-gap and remediation clock? Bulk feed over the FDA Warning Letters index, newest-first by issue date: recipient firm, product area (drugs/devices/food/tobacco…), issuing office, alleged-violation subject, and the response / close-out clock. Flat rows, cursor-paginated up to 1000/page, filterable by product_area, subject, close-out state, or since. Observational records — an alleged violation, never an adjudication.$25.00 Basedown1 payers93% up
  5. 91api.govparse.io/v1/feeds/sba-loansWhich small businesses were just approved for an SBA loan? Bulk feed over SBA 7(a) & 504 FOIA loan approvals, newest-first by approval date — a business approved for a federal loan is funded to grow. Cursor-paginated up to 1000/page, filterable by borrower state, program (7A/504), NAICS, minimum amount, or since. Rows carry the borrower, city/state, program, approval amount (banded), lender/CDC, NAICS, and jobs supported. Observational public records as disclosed.$25.00 Basedown1 payers93% up
  6. 91api.govparse.io/v1/msha/violations/searchWhich mine operators have MSHA citations or orders? Search the MSHA Violations data set (citations & orders at coal & M/NM mines) by cited company, mine id, state, cited 30 CFR standard (part_section), Mine Act section, citation/order type, health/safety area, negligence, likelihood, S&S (sig_sub), contested, year, or issue date (since). Returns the cited violator (entity-resolved), mine, standard cited, penalty, and dates. Reported exactly as cited, not a safety judgment.$1.25 Basedown1 payers93% up
  7. 91api.govparse.io/v1/sba/loans/searchWhich companies just got SBA growth capital — a 7(a) guaranty or 504/CDC debenture? Search the SBA 7(a) & 504 FOIA loan-approval roster by company, state, project_state, naics (prefix), program (7A/504), amount_min/amount_max, since (approved on/after a date — the funded-to-grow trigger), business_type, franchise, lender/CDC, entity_id. Returns the borrower, address, gross approval amount, approval date/FY, NAICS, funding lender, and entity-resolved borrower. SBA public-domain records.$1.25 Basedown1 payers93% up
  8. 91api.govparse.io/v1/phmsa/incidents/searchWhich pipeline operators had a reported incident? Search PHMSA pipeline incidents (2010+, gas distribution / hazardous liquid / gas transmission) by operator, operator_id, mode, state, cause, commodity, minimum cost (min_cost), year, or incident date (since). Returns the incident, its entity-resolved operator, location, commodity released, casualties, cost, and cause — a remediation / integrity / claims trigger. Reported exactly as recorded, not a safety judgment.$1.25 Basedown1 payers93% up
  9. 91api.govparse.io/v1/phmsa/operators/searchWhich pipeline operators are in a market, and who are they? Search the PHMSA pipeline operator roster by operator name, operator_id (OPID), HQ state, operator_type, or commodity. Returns the operator, HQ address, commodity, type, and entity-resolved company — the target universe for oil-and-gas services, pipeline-integrity & environmental consultants, energy insurers, and industrial real estate. PHMSA public-domain records.$1.25 Basedown1 payers93% up
  10. 91api.govparse.io/v1/fsis/recalls/searchWhich food companies have an FSIS meat/poultry/egg recall? Search USDA FSIS recall and public-health-alert records by recalling firm, classification (Class I/II/III or Public Health Alert), reason (allergens, contamination, misbranding), state, active status, outbreak link, or recall date (since). Returns the recalling firm (entity-resolved where possible), classification, reason, product, and dates — a remediation, sanitation, and displacement trigger for food-safety sellers.$1.25 Basedown1 payers93% up
  11. 91api.govparse.io/v1/fda/drug-approvals/searchWhich companies just won an FDA drug approval or supplement? Search openFDA drug/drugsfda applications by sponsor company, application type (NDA/ANDA/BLA), route, marketing status, most-recent approval date (since), or original market-entry date (first_approval_after). Returns the applicant company (entity-resolved where possible), brand/ingredient/dosage, and approval dates — a day-one commercial/partnership target list for pharma sellers and CROs. openFDA public-domain records.$1.25 Basedown1 payers93% up
  12. 91api.govparse.io/v1/sponsors/searchWhich employers sponsor work visas or green cards? Search DOL OFLC disclosure data by employer name, state, program (LCA/H-1B vs PERM), case status, fiscal year, or SOC occupation code. Returns per-employer filing counts (total, LCA, PERM, certified, denied) — the shortlist behind 'who sponsors H-1B for this role?'$1.25 Basedown1 payers93% up
  13. 91api.govparse.io/v1/trials/searchWhich companies are running clinical trials, and at what stage? Search ClinicalTrials.gov interventional industry-sponsored studies by lead sponsor, phase, status, condition, intervention type, a US state with a site, first-posted date (since), start date, or completion date. Returns the sponsor (entity-resolved where possible), phase, status, conditions, enrollment, and dates — a developer target list for CRO, trial-software, and commercial-ops sellers. ClinicalTrials.gov public records.$1.25 Basedown1 payers93% up
  14. 91api.govparse.io/v1/insiders/transactionsWhat did a company's insiders actually file? Search individual SEC Form 4 transaction lines by ticker, issuer CIK, insider name, direction (buy/sell/other), transaction code (P/S/A/M/F/G), role (officer/director/ten_percent), state, security type, minimum value, or date. Returns the insider, role, security, code, shares, price, and value per filing — the raw feed behind the cluster signal. Public SEC filings as filed — observational, not advice.$1.25 Basedown1 payers93% up
  15. 91api.govparse.io/v1/hrsa/mua/searchWhich areas and populations has HRSA designated Medically Underserved (MUA/P)? Search by state, county, status, designation type, MUA/P id, maximum IMU score (0-100, LOWER = more underserved), or designated-since date. Returns the service area, IMU score, geography, and dates — the safety-net / FQHC territory for staffing, telehealth, and access programs. HRSA public-domain records.$1.25 Basedown1 payers93% up
  16. 91api.govparse.io/v1/hrsa/hpsa/searchWhere has the federal government designated a health-professional shortage? Search HRSA HPSAs by state, county, discipline (Primary Care | Dental Health | Mental Health), designation type, status, minimum HPSA score (0-26, higher = worse), population type, rural-only, or designated-since date. Returns the designation, score, geography, provider-to-population ratio, and shortage FTE — the buying moment for clinician-staffing, telehealth, and workforce vendors.$1.25 Basedown1 payers93% up
  17. 91api.govparse.io/v1/epa/tri/searchWhich facilities report toxic chemical releases? Search the EPA Toxics Release Inventory (TRI Basic Data) by facility or parent company, state, chemical, CAS number, NAICS, reporting year, chemical class (carcinogen, PBT, PFAS), or minimum release amount. Returns the facility (entity-resolved where possible), parent company, chemical, and on/off-site release totals — the emissions universe for environmental, remediation, and EHS sellers. EPA public-domain; amounts self-reported.$1.25 Basedown1 payers93% up
  18. 91x402.openwebninja.com/realtime-product-search/v2/search$0.003 Base861 ms1 payers100% up
  19. 90api.onesource.io/api/chain/callSimulate a read-only Ethereum contract call via eth_call - no transaction sent$0.005 Base1497 ms295 payers100% up
  20. 90api.onesource.io/api/chain/estimate-gasEstimate the gas a transaction will consume via eth_estimateGas before signing it$0.004 Base1492 ms288 payers100% up
  21. 90api.onesource.io/api/chain/nft-ownerLook up the current owner of an ERC721 NFT by token_id via ownerOf (eth_call)$0.003 Base1099 ms205 payers100% up
  22. 90api.onesource.io/api/chain/erc1155-balanceERC1155 token balance via balanceOf (eth_call) - how many copies of a token_id a wallet holds$0.003 Base1066 ms193 payers100% up
  23. 90tick.hugen.tokyo/tick/latestGet real-time Best Bid/Ask for any FX pair, aggregated from multiple institutional liquidity providers. 62-88% tighter spreads than any single source. Includes quality metadata (fresh_sources, quality_state, spread_vs_single_source). Supports 14 FX pairs including EURUSD, USDJPY, GBPUSD, AUDUSD, AUDNZD, and XAUUSD. AI agent API for forex trading signals, portfolio valuation, price comparison, and arbitrage detection. Accepts USDC payments on Base and Solana$0.005 Base1522 ms155 payers100% up
  24. 90api.exa.ai/searchSearch$0.007 Base1471 ms86 payers100% up
  25. 90blockrun.ai/api/v1/pm/polymarket/marketsQuery Polymarket markets with filtering, sorting, and pagination$0.0085 Base1414 ms79 payers100% up
  26. 90x402.ottoai.services/crypto-newsImportance-ranked crypto headlines with per-article source links and publish times, plus a sentiment-scored market brief. Regenerated hourly; meta carries the snapshot's age and a fresh/stale verdict.$0.001 Base1198 ms77 payers100% up
  27. 90api.oblique.markets/api/v1/paid/timeUse when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Returns Current server time as ISO 8601 and Unix epoch milliseconds, returned only after a real settlement. $0.01.$0.01 Base1468 ms68 payers100% up
  28. 90randomfactsx402.vercel.app/api/random-factReturns a single random fact as JSON in exchange for a micropayment.$0.001 Base1294 ms59 payers100% up
  29. 90coinflip402.vercel.app/api/coinflipFlip a coin for a small USDC payment on Base mainnet. Returns heads or tails.$0.001 Base1286 ms59 payers100% up
  30. 90keyring-agent.blockchhub.link/api/send-tokenPay the send-token execution fee (ERC-20 transfer)$0.05 Base1050 ms59 payers100% up
  31. 90api.loyalspark.online/x402-gateway/recipient-api/offersOnchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.$0.001 Base1385 ms56 payers100% up
  32. 90x402uselessfacts.vercel.app/api/useless-factPay a tiny amount of USDC and receive one delightfully useless fact.$0.001 Base1250 ms56 payers100% up
  33. 90cars2026.vercel.app/api/carsEducational briefing on the latest cars in 2026 (powertrains, range, pricing, and what's new).$0.0011 Base1445 ms53 payers100% up
  34. 90api.oblique.markets/api/v1/paid/bazaar-pulseUse when an agent wants one-call situational awareness of the x402 Bazaar before choosing what to buy or sell. Returns Live x402 Bazaar market pulse: trending services, call volumes, new listings, and catalog changes from daily full-catalog snapshots. Machine-readable JSON for agent-market research. $0.002.$0.002 Base1384 ms53 payers100% up
  35. 90stableenrich.dev/api/fullenrich/people-searchFullEnrich People Search — filter by company domain/name/LinkedIn URL, seniority, title, location, skills, and 20+ FullEnrich filters. Default lean roster: companies map + company_id refs; include_employment_history or verbose for full history. $0.15 when results found; free when no matches.$0.15 Base1454 ms52 payers100% up
  36. 90x402wordoftheday.vercel.app/api/word-of-the-dayGet today's curated Word of the Day (definition + part of speech).$0.0015 Base1407 ms50 payers100% up
  37. 90x402.ottoai.services/token-detailsToken price, market cap, volume, supply, and basic metrics. Works for any listed token.$0.001 Base1293 ms49 payers100% up
  38. 90ladyfortunalx402.vercel.app/api/fortuneGet a random fortune via x402 payment on Base mainnet.$0.001 Base1307 ms49 payers100% up
  39. 90x402lifeadvice.vercel.app/api/life-adviceGet one piece of thoughtful life advice, paid per request over x402.$0.001 Base1385 ms49 payers100% up
  40. 90horrorstoryapi.vercel.app/api/horror-storyAccess the exclusive horror story collection (pay-per-read).$0.0013 Base1310 ms49 payers100% up
  41. 90dicex402.vercel.app/api/diceRoll a dice with any number of faces. Specify faces via ?faces=N query parameter.$0.001 Base1174 ms48 payers100% up
  42. 90roastx402endpoint.vercel.app/api/roastPay for a lighthearted developer roast generated on-demand.$0.0017 Base1272 ms47 payers100% up
  43. 90memegeneratorx402.vercel.app/api/generate-memeGenerate a captioned meme image. Pay per request in USDC on Base mainnet.$0.001 Base1326 ms46 payers100% up
  44. 90jokes-endpoint.vercel.app/api/jokesGet a random interesting joke. Secured with x402 payment protocol on Base mainnet.$0.002 Base1313 ms45 payers100% up
  45. 90weight402endpoint.vercel.app/api/convert-weightConvert a weight/mass value between units (kg, g, lb, oz, stone, tonne, and more).$0.0025 Base1231 ms41 payers100% up
  46. 90riddlex402.vercel.app/api/riddlePay a micro-fee in USDC on Base mainnet to receive a riddle and its answer.$0.002 Base1192 ms41 payers100% up
  47. 90api.run402.com/tiers/v1/prototypeSet prototype tier ($0.10 USDC) — auto-detects start/renew/upgrade$0.10 Base1391 ms41 payers100% up
  48. 90402timezones.vercel.app/api/convert-timezoneConvert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.$0.001 Base1269 ms40 payers100% up
  49. 90laso.finance/get-cardGet a prepaid card for use inside the United States$5.00 Base1044 ms39 payers100% up
  50. 90api.loyalspark.online/x402-gateway/recipient-api/workflow/reward-statusOnchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.$0.001 Base1207 ms37 payers100% up
  51. 90api.bitrefill.com/x402/gift-cards/searchSearch 10,000+ gift card & voucher brands across 180+ countries by name and country. Pay in USDC via x402, no account.$0.002 Base1272 ms36 payers100% up
  52. 90api.nansen.ai/api/v1/profiler/address/current-balanceGet Address Current Balance Data$0.01 Base1305 ms36 payers100% up
  53. 90api.exa.ai/contentsExa /contents endpoint$0.001 Base1180 ms35 payers100% up
  54. 90api.loyalspark.online/x402-gateway/recipient-api/rewardsOnchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.$0.001 Base1193 ms35 payers100% up
  55. 90api.nansen.ai/api/v1/tgm/who-bought-soldGet "Token God Mode" (TGM) who bought/sold data$0.01 Base1128 ms35 payers100% up
  56. 90api.printmoneylab.com/api/v1/kr-pricesKorean exchange prices (Upbit, Bithumb) for a single token in KRW$0.002 Base1415 ms35 payers100% up
  57. 90api.loyalspark.online/x402-gateway/recipient-api/balanceOnchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.$0.001 Base1203 ms34 payers100% up
  58. 90api.loyalspark.online/x402-gateway/recipient-api/vouchersOnchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.$0.001 Base1181 ms34 payers100% up
  59. 90agent402.tools/api/demand-radarWhat agents keep asking for that nobody serves yet: aggregated, qualified demand clusters from a live agent-demand board, with caller counts and how long each need has persisted. Use it when a seller or an agent is choosing what to build next and wants unmet demand with evidence instead of guesses.$0.005 Base1296 ms28 payers100% up
  60. 90x402.twit.sh/tweets/searchSearch Twitter/X tweets with advanced filters. Returns up to 20 tweets per page, most recent first, with pagination. At least one filter required. Params: words, phrase, anyWords, noneWords, hashtags, from, to, mentioning, minReplies, minLikes, minReposts, since (YYYY-MM-DD), until, next_token. e.g. GET /tweets/search?words=bitcoin&from=elonmusk&minLikes=100. Returns X v2 API-compatible JSON.$0.006 Base1566 ms27 payers100% up
  61. 90websearch.use.x402atlas.com/searchReal-time web search for AI agents — search the web and get ranked SERP-style results as clean JSON: title, URL, snippet, relevance score, optional LLM-generated answer. Find up-to-date information online — latest news, current events, finance. Date, domain and exact-phrase filters.$0.01 Base1275 ms26 payers100% up
  62. 90edgar.apitoll.cloud/v1/edgar/filingsLatest SEC EDGAR filings for any US-listed company by stock ticker or CIK: 10-K annual reports, 10-Q quarterly reports, and 8-K material events. Resolves ticker to CIK via SEC's official index and returns the parsed filing (company, form type, dated items). Sourced live from data.sec.gov.$0.003 Base1656 ms26 payers100% up
  63. 90api.402rates.com/v1/pingPayment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabilities. HTTP payment options can include Base, Polygon, Arbitrum and XDC; the challenge lists currently available networks for each transport. The receipt identifies the paid network and transaction. Business/professional use only. Terms: https://402rates.com/data-terms/$0.001 Base1615 ms26 payers100% up
  64. 90twitter.use.x402atlas.com/searchSearch Twitter/X with structured filters or raw advanced-search syntax. Returns up to 20 normalized tweets with full text, author details, engagement metrics and a pagination cursor.$0.0069 Base1242 ms25 payers100% up
  65. 90cheaptokens.ai/api/buyOpenAI-compatible LLM inference and chat completions via discounted Venice API credits. Pay USDC to receive a live Venice.ai API key for /api/v1 models, chat, images, audio, video, and embeddings. Same-Day credits are 30–90% below Venice direct and expire at 23:59 UTC; Prepaid API Keys support recurring agent jobs.$1.00 Base1544 ms25 payers100% up
  66. 90agent402.tools/api/bestsellersWhat agents actually pay for across a 500+ tool x402 catalog: the tools ranked by settled calls, distinct buyers and dollars over a window you choose, read from the seller's own sales ledger rather than the chain. Use it when an agent is deciding what to build, what to buy, or what paying demand on x402 looks like this week.$0.005 Base1475 ms25 payers100% up
  67. 90laso.finance/authGet auth credentials$0.001 Base1394 ms24 payers100% up
  68. 90api.hyperextend.xyz/v1/candles/BTC/1m/latestThe most-recent N OHLCV candles (≤5000). Same per-row pricing as the windowed read ($0.00001 base for main/spot, $0.000025 premium for HIP-3/HIP-4); candles lag ~2 days.$0.002 Base1605 ms22 payers100% up
  69. 90pro-api.coinmarketcap.com/x402/v3/cryptocurrency/quotes/latestGet the latest market quotes for one or more cryptocurrencies.$10000000000.00 eip155:561208 ms22 payers100% up
  70. 90quartermaster.surewhynot.app/v1/gasCurrent Base gas prices and a simple-transfer cost estimate for transaction planning.$0.001 Base1658 ms21 payers100% up
  71. 90x402.botsmith.dev/x/searchX Tweet Search ($0.02/call): Search X (Twitter) posts with full advanced-search syntax (from:, since:, until:, exact phrases, boolean operators). Returns up to 20 posts per call as clean JSON with metrics and entities, plus a cursor for the next page. No X account or API key needed.$0.02 Base1850 ms19 payers100% up
  72. 90api.you.com/v1/searchYou.com Search API: real-time web search returning ranked results grouped by section (results.web, results.news), each with url, title and description; web results also carry snippets. Use when an agent needs fresh, citable web data (news, markets, company facts) to ground a decision. Query params: query (required), count 1-100 (default 10), livecrawl (web|news|all; fetches live page contents, charged per result), country, freshness. Paid per call in USDC.$0.005 Base1947 ms19 payers100% up
  73. 90agent.pocket.network/v1/meadowAn agent-only messaging network. Agents register with an Ed25519 key and talk in public rooms and end-to-end encrypted private rooms and DMs. POST /v2/lookup finds agents by id, handle, name or query; POST /v2/rooms searches the public room directory by name or topic, no identity needed; POST /v2/sync publishes signed events. Auth rides in the body. Pay per request in USDC; no account, no API key.$0.005 Base1290 ms19 payers100% up
  74. 90api-dev-v2.ixs.finance/x402/vaultsIXS Real world asset vaults — 6% yields, BlackRock exposure, tokenized on-chain$0.001 Base1917 ms18 payers100% up
  75. 90x402.sniperx.fun/api/v1/token/activities/smarttraders_smartmoneyGet SmartMoney trading activities on token (sorted by time descending)$0.02 solana1704 ms18 payers100% up
  76. 90sat.ipintel.ai/satellite-observeAgent-ready satellite observations for any coordinates. Returns PNG image URLs and scene metadata for true color, vegetation, water, thermal, or radar analysis.$0.025 Base1533 ms17 payers100% up
  77. 90stablestudio.dev/api/uploadGet a client token for direct upload to Vercel Blob$0.01 solana1477 ms17 payers100% up
  78. 90pro-api.coingecko.com/api/v3/x402/onchain/search/poolsSearch onchain DEX pools and token, by contract address, name, or token symbol.$0.01 Base1259 ms17 payers100% up
  79. 90kronossignals.com/api/v1/liquidations/btcForward liquidation cluster map + recent prints for all 17 crypto assets. Part A: estimated liq price levels for 5x/10x/25x/50x leverage bands, modeled from open interest and mark price — no new upstream source. Part B: real liquidation prints from OKX public API (no auth). Returns cluster map, nearest_long/short clusters, squeeze_bias, and honest disclaimers. Supports BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT/HYPE-USD. Pay-per-call via x402.$0.02 Base1558 ms17 payers100% up
  80. 90stabletravel.dev/api/seats-aero/searchSearch cached Seats.aero award availability by origin, destination, dates, cabin, carriers, and pagination.$0.02 Base1244 ms17 payers100% up
  81. 90agentpay.tools/tools/pre_trade_check/callPre-trade risk check for AI agents trading crypto: live orderbook slippage at YOUR size, side-aware funding carry, open-interest crowding, and optional contract security — composed into a single ok/caution/avoid verdict with per-factor reasons and raw data embedded. Answers 'is this trade sane?' before trading, not after. Replaces four API integrations plus the judgment layer.$0.01 Base1542 ms16 payers100% up
  82. 90brokenkey-api-link-tau.vercel.app/api/brokenkeyremapperlinkPurchase and download the Broken Key Remapper software (one-time license).$0.003 Base1521 ms16 payers100% up
  83. 90api.kadec0.xyz/v1/serpWeb search results (SERP). Keyless web search returning ranked title, URL, and snippet for a query — with locale/region targeting, freshness filters (past day, week, month, year), pagination, a news mode that adds publish date and source, and selectable backend engine (auto rotation, or pin Brave, Yahoo, or Yandex).$0.05 Base1552 ms15 payers100% up
  84. 90glim.sh/api/v1/twitter/searchSearch tweets with advanced operators (recommended). Body param is `query` (not q), e.g. {"query":"from:elonmusk AI min_faves:100"}$0.005 Solana2121 ms15 payers100% up
  85. 90coil.trade/api/crypto/gateSTART HERE — the cheapest answer we sell ($0.001) and the first call most agents make. Is crypto risk-on right now? Whether the BTC 200-day master gate is open or closed, the LONG/CASH state of the BTC and ETH sleeves, and a one-line verdict, all evaluated on UTC daily closes by a long-only rules engine. Poll it every cycle; when the gate flips, step up to /api/board/regime for the equity tape and /api/board/indices for the index ladder ($0.005 each). Research, not advice.$0.001 Base1382 ms15 payers100% up
  86. 90wallets-demo-seller-server.calebgcarithers.workers.dev/weatherReal-time current weather conditions for a city or location, including temperature, humidity, precipitation, wind, and a human-readable condition.$0.001 Base Sepolia1439 ms14 payers100% up
  87. 90vaaya.ai/api/run/exa/searchExa — semantic web search via our API key. numResults up to 100. For people/lead discovery set category:"people" with an open ICP query.$0.01 Base1440 ms14 payers100% up
  88. 90api.loyalspark.online/x402-gateway/transferOnchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.$0.005 Base133 ms14 payers83% up
  89. 90kronossignals.com/api/v1/forecast/btcReal-time and ML-forecasted Bitcoin (BTC) price. Kronos deep-learning model: up-probability, expected close, price range, p10-p90 quantiles, forward volatility across 1h/4h/24h horizons. Crypto price prediction / price forecast API for AI agents and trading bots. Pay-per-call via x402 on Base USDC. Live scored track record at /api/stats — measured on served predictions, not a backtest.$0.05 Base1465 ms13 payers100% up
  90. 90gas.apitoll.cloud/v1/base/gasBase gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x402 call. Real-time slow/standard/fast EIP-1559 fee tiers from a live eth_feeHistory call, returned as DROP-IN maxFeePerGas + maxPriorityFeePerGas in wei — plug straight into a viem/ethers transaction, no gwei conversion. Plus base fee, head block, and network fullness. Call it before every Base tx to set a fair fee or wait out congestion.$0.001 Base1558 ms13 payers100% up
  91. 90win.oneshotagent.com/v1/tools/searchWeb search returning URLs, titles, and descriptions$0.001 Base1343 ms13 payers100% up
  92. 90google-trends.use.x402atlas.com/related-queriesGoogle Trends related search queries for a keyword by country — top & rising terms for SEO keyword research, query expansion and content ideas.$0.03 Base1333 ms12 payers100% up
  93. 90kronossignals.com/api/v1/price/btcMulti-source volume-weighted median (VWM) spot price for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT). Aggregates Binance, Coinbase, Kraken, and OKX in parallel (2 s timeout per source). Includes 1% outlier rejection, cross-exchange spread %, confidence grading (high/medium/low), and per-source USD volume weights. Kaiko-style reference pricing — $0.02/call.$0.02 Base1432 ms12 payers100% up
  94. 90scvd.store/api/buy/spot_checkSpot Check. REQUIRES ?host= on the paid request — a signed request without it is refused before the gate and no money moves. Name a host and get what this observatory already holds on it, signed: corpus rounds and verdicts as recorded, when we last actually knocked, our coverage of the window since we met it, and the gaps with their reasons. Read from the books at the counter — no request is made to the host, so the answer is as fresh as our last round and no fresher, and sa…$0.001 Base1481 ms12 payers100% up
  95. 90minifetch.com/api/v1/x402/preflight/url-checkCheap robots.txt preflight before you call the Minifetch /extract and /run/seo-page-audit endpoints: returns whether the Minifetch user agent may fetch a target URL (allow/deny) plus its crawl-delay. If blocked or setting a crawl delay read https://minifetch.com/tutorials/unblock-minifetch . Checks the URL as given — does not follow redirects. Supports GET & POST$0.001 Base1319 ms12 payers100% up
  96. 90kronossignals.com/api/v1/fear-greedCrypto Fear & Greed Index: alternative.me score (0-100) plus Kronos-owned context (BTC funding sentiment, OI 1h trend, 24h price momentum). Not a pure proxy — adds proprietary derivative signals. Pay-per-call via x402.$0.03 Base1284 ms12 payers100% up
  97. 90api.robinx.io/feed/newLive scored launch feed (realtime) — or add ?tier=free for the 10-min-delayed free feed, or ?tier=alpha ($0.02) for caller_signal enrichment$0.01 Base1334 ms12 payers100% up
  98. 90base-gas-x402-production.up.railway.app/gasLive Base mainnet gas: EIP-1559 base fee, low/medium/high priority tiers in gwei, and a transaction cost estimate for any gas limit.$0.005 Base1133 ms12 payers100% up
  99. 90x402.miroshark.xyz/runRun a multi-agent social-media simulation (x402-paid)$1.00 solana1216 ms11 payers100% up
  100. 90x402tap.com/api/weatherLive current weather conditions for any city, sourced from Open-Meteo$0.001 Base1249 ms11 payers100% up