x402watch

50,402 paid endpoints are listed. 27,744 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 2026-10-10 12:50 UTC · 50,402 probed

27,744 answering 40218,331 down3,404 rejecting923 no paywall1,677 price drift
  1. 78api.magentlab.com/api/calc/mapsPardanani 2018 MAPS hybrid clinical-molecular (Figure 3): advanced SM 2 (ASM, SM-AHN, or MCL; ISM/SSM 0), age >60 1, platelets <150×10^9/L 1, ALP above UNL 1, ASXL1/RUNX1/NRAS 1; max 6. Low ≤2, intermediate-1 3, intermediate-2 4, high ≥5. Not WHO SM, not ICC SM, not clinical-only Figure 1. magent does not sequence, assay ALP, or count platelets.$0.005 $0.007 Base992 ms2 payers97% up
  2. 78api.magentlab.com/api/calc/iwg2_adDubois 2014 IWG-2 typical AD research criteria. typical_ad iff early hippocampal-type episodic memory, no better explanation, and in-vivo AD pathology (CSF Abeta1-42 plus T-tau or P-tau, amyloid PET, or a PSEN1/PSEN2/APP mutation). Typical AD only; not atypical phenotypes. Not NINCDS-ADRDA, not NIA-AA ATN, not DSM. magent does not examine the patient, assay CSF, or read PET. Not a diagnosis or medical device.$0.005 $0.007 Base695 ms2 payers97% up
  3. 78api.magentlab.com/api/calc/icc_smICC 2022 systemic mastocytosis (Arber 2022). Met when major infiltrates (≥15 tryptase- and/or CD117-positive MCs in aggregates in BM or extracutaneous organ) alone, or ≥3 minors. Minors: >25% spindle or atypical immature morphology, KIT D816V or other activating KIT mutation, CD25/CD2/CD30, tryptase >20 ng/mL (not counted in SM-AMN). Not a diagnosis. Not Valent 2016 WHO SM. Not WHO 5th/Khoury. Not cutaneous mastocytosis only. magent does not read a biopsy or assay tryptase.$0.005 $0.007 Base968 ms2 payers97% up
  4. 78api.magentlab.com/api/calc/gwtg_hfPeterson 2010 GWTG-HF Figure 2 integer points for in-hospital mortality in hospitalized heart failure: age 0-28, systolic BP 0-28, BUN 0-28, sodium 0-4, heart rate 0-8, COPD +2, caller-assigned nonblack (black=false) +3. Total 0-100. magent does not assign race. Not a diagnosis.$0.005 $0.007 Base748 ms2 payers97% up
  5. 78api.magentlab.com/api/calc/four_ts4Ts score (bulk)$0.005 $0.007 Base634 ms2 payers97% up
  6. 78api.magentlab.com/api/calc/fomepizoleAdult IV fomepizole milligrams from weight (AACT 1999). Loading 15 mg/kg. Maintenance 10 mg/kg every 12 hours for four doses, then 15 mg/kg every 12 hours after 48 hours (auto-induction). Same milligrams during hemodialysis at a 4-hour interval. Not a prescription, indication, or brand order. magent does not assay ethylene glycol or methanol.$0.005 $0.007 Base625 ms2 payers97% up
  7. 78api.magentlab.com/api/calc/fluid_ioNet fluid balance in mL: caller-assigned total intake minus total output over the same interval. Optional oral plus IV intake and urine, ultrafiltration, drain, and GI output must sum to those totals when sent (Acheampong and Vincent 2015). Does not estimate insensible losses. Not a resuscitation or diuretic order; magent does not measure I/O. Deterministic published arithmetic with citation.$0.005 $0.007 Base834 ms2 payers97% up
  8. 78api.magentlab.com/api/calc/flamm_vbacFlamm 1997 admission VBAC score, max 10. Points: age under 40 (+2); vaginal birth none 0, before first cesarean 1, after first cesarean 2, before and after 4; first cesarean not for failure to progress (+1); admission effacement gt_75 +2, from_25_to_75 +1, lt_25 0; dilation >=4 cm (+1). Published success 49% for scores 0-2 and 95% for 8-10; other scores return the total only. Not a trial-of-labor order. magent does not examine the cervix.$0.005 $0.007 Base552 ms2 payers97% up
  9. 78api.magentlab.com/api/calc/fisherFisher (bulk)$0.005 $0.007 Base709 ms2 payers97% up
  10. 78api.magentlab.com/api/calc/face_dropsMcEntire 2025 FACE DROPS: seven caller-assigned flags for acute Lyme disease-associated facial palsy versus Bell palsy. Fever +8, aches (arthralgia/myalgia) +6, cephalalgia +3, exhaustion +4, dermatomal or radicular pattern +4, otalgia or postauricular pain −1, stiff neck +3. Score −1 to 28. Scores ≤4 favor Bell palsy; ≥7 favor LDFP; 5–6 indeterminate. Not a Lyme test, diagnosis, serology order, or stroke FACE-DROPS mimic score. magent does not examine the face.$0.005 $0.007 Base930 ms2 payers97% up
  11. 78api.magentlab.com/api/calc/ed_buprenorphineED-initiated buprenorphine milligrams from D'Onofrio 2015 (JAMA; PMID 25919527): dose_mg is 8 on protocol day 1 and 16 on days 2 and 3. Take-home schedule only. Not a home-induction decision tree, not COWS scoring, and not a prescription or X-waiver. magent does not score withdrawal.$0.005 $0.007 Base883 ms2 payers97% up
  12. 78api.magentlab.com/api/calc/eat_sleep_consoleGrossman 2018 Eat, Sleep, Console functional assessment. well_managed iff eat ≥1 oz per feed or breastfeed well, sleep undisturbed ≥1 hour, and console within 10 minutes if crying. needs_increased_treatment iff not well_managed (boolean only; not a morphine dose). Not modified Finnegan. Not the later ESC Care Tool item list. magent does not examine the infant. Not a diagnosis or medical device.$0.005 $0.007 Base641 ms2 payers97% up
  13. 78api.magentlab.com/api/calc/delta_pTitulaer 2011 DELTA-P for SCLC association in Lambert-Eaton myasthenic syndrome. One point each, at or within 3 months of LEMS onset: bulbar weakness (dysarthria/dysphagia/chewing/neck weakness); erectile dysfunction if male (always 0 if female); weight loss ≥5%; smoking at onset; age ≥50; Karnofsky <70. Max 6. Bands low 0-1, intermediate 2, high 3-6. Published SCLC percents for scores 0, 1, 3-6; none for score 2. Not a LEMS diagnosis, not SOX1, and not an SCLC screen.$0.005 $0.007 Base984 ms2 payers97% up
  14. 78api.magentlab.com/api/calc/chosenLevine 2020 CHOSEN (COVID Home Safely Now): age 18-45 +5, 46-59 +2, 60-73 +1, >73 +0; SpO2 <94 +0, 94-96 +9, 97-98 +14, >98 +21; albumin g/dL <2.8 +0, 2.8-3.3 +5, 3.4-3.7 +15, >3.7 +29. Score 0-55. Cutpoint 30 (derivation sensitivity 83%, specificity 82%). Higher score favored event-free status in the paper. Not a discharge order.$0.005 $0.007 Base908 ms2 payers97% up
  15. 78api.magentlab.com/api/calc/cdc_immACIP 2025 Table 2 catch-up minimum age and previous-dose interval. Eligible if age_months meets the printed minimum and weeks_since_previous_dose meets a printed interval (omit for dose 1). HepB dose 2 is 4 weeks. MMR/HepA/varicella dose 1 is 12 months. Not a vaccine order. magent does not immunize. Not routine age bars, Hib/PCV branching, HepB dose 3, or the 4-day grace period.$0.005 $0.007 Base524 ms2 payers97% up
  16. 78api.magentlab.com/api/calc/briBody roundness index from height and waist (Thomas 2013). Models the body as an ellipse: e = sqrt(1 - (waist/(pi*height))^2), BRI = 364.2 - 365.5*e. Deterministic published formula with citation. Not a medical device, VAT measurement, or body-fat diagnosis; magent does not measure the patient.$0.005 $0.007 Base674 ms2 payers97% up
  17. 78api.magentlab.com/api/calc/bppManning 1980 fetal biophysical profile. Five caller-assigned variables, each 2 if normal or 0 if abnormal: fetal breathing movements, fetal movements, fetal tone, qualitative amniotic fluid volume, and nonstress test. Score 0-10. 1980 breathing is a 60-second episode in 30 minutes; 1980 fluid is a 1 cm pocket. magent does not ultrasound. Not a delivery order. Does not apply later 30-second breathing, 2 cm pocket, or 8-10/6/<=4 management bands.$0.005 $0.007 Base957 ms2 payers97% up
  18. 78api.magentlab.com/api/calc/bmvFarris 2017 brain metastasis velocity: bmv = new_brain_metastases / years_since_first_srs, 1 decimal. new_brain_metastases integer 0-200; years_since_first_srs 0.01-30. Low if BMV <4 (median OS 12.4 months after initial distant brain failure), intermediate 4-13 (8.2), high >13 (4.3). Does not floor BMV (NRG-BN009). Not time since last SRS. magent does not count metastases on imaging. Not a diagnosis. Not a medical device.$0.005 $0.007 Base879 ms2 payers97% up
  19. 78api.magentlab.com/api/calc/bishopBishop 1964 pelvic score: sum of five caller-assigned integers (dilation 0-3, effacement 0-3, station 0-3, consistency 0-2, position 0-2; max 13). Paper bins: dilation 0 / 1-2 / 3-4 / 5-6 cm; effacement 0-30 / 40-50 / 60-70 / 80%; station -3 / -2 / -1 or 0 / +1 or +2; consistency firm/medium/soft; position posterior/mid/anterior. magent does not examine the cervix and does not add later favorable/unfavorable cutoffs, modified Bishop, or cervical length.$0.005 $0.007 Base767 ms2 payers97% up
  20. 78api.magentlab.com/api/calc/bedFowler 1989 BED without a time or repopulation term: BED = n * d * (1 + d / (alpha/beta)). n equal fractions (1-50), d Gy per fraction (0.5-30), caller-assigned tissue alpha/beta (1-20 Gy). Rounds to 1 decimal. Rejects non-positive n*d or alpha/beta. No T_k/T_pot, no EQD2. Not a radiotherapy prescription. magent does not plan radiotherapy. Not a medical device.$0.005 $0.007 Base804 ms2 payers97% up
  21. 78api.magentlab.com/api/calc/bawsRastegar 2017 Brief Alcohol Withdrawal Scale (BAWS): five caller-assigned integers 0-3 (tremor, diaphoresis, agitation, orientation, hallucinations), summed 0-15. BAWS >=3 predicted CIWA-Ar >=8 in that paper (sensitivity 85.3%, specificity 65.8%). magent does not examine the patient or order benzodiazepines. Not later ICU dose bands. Not a medical device.$0.005 $0.007 Base831 ms2 payers97% up
  22. 78api.magentlab.com/api/calc/bastionBastion classification of lower-limb IED injury (Jacobs 2014). Caller assigns class 1-5 as the most proximal extent. Returns the class description, associated-injury flags (segmental, intraperitoneal abdomen, genital/perineal, pelvic ring, upper limb), and tourniquet_effective (true for class 1-3, false for class 4-5). Not MESS, not ISS AIS, not a treatment protocol. Paper was not designed for mortality or transfusion rates. magent does not examine the casualty.$0.005 $0.007 Base930 ms2 payers97% up
  23. 78api.magentlab.com/api/calc/barsSwift 2002 Behavioural Activity Rating Scale (BARS): caller-assigned integer 1-7 (difficult or unable to rouse; asleep but responds normally to verbal or physical contact; drowsy, appears sedated; quiet and awake, normal activity; signs of overt physical or verbal activity, calms with instructions; extremely or continuously active, not requiring restraint; violent, requires restraint). Returns score, max 7, and a stable label. Not RASS and not a diagnosis. magent does not observe the patient.$0.005 $0.007 Base907 ms2 payers97% up
  24. 78api.magentlab.com/api/calc/aua_siBarry 1992 AUA-SI: seven caller-assigned integers 0-5 for incomplete emptying, frequency, intermittency, urgency, weak stream, straining (hesitancy), and nocturia. Sum 0-35. magent does not take a voiding history. Barry 1992 published no mild/moderate/severe total-score bands; later AUA-guideline 0-7/8-19/20-35 cuts are not applied. Not the 8-item IPSS quality-of-life question, not a BPH treatment order, and not a medical device.$0.005 $0.007 Base909 ms2 payers97% up
  25. 78api.magentlab.com/api/calc/amt_10AMT-10 (Hodkinson 1972): ten caller-assigned correct/incorrect flags. Each correct item scores 1; max 10. Score is the 0–10 sum only. Hodkinson 1972 did not publish a diagnostic cutoff. Flags only; magent does not interview the patient or collect age, date of birth, place, year, address, or monarch name. Not a dementia diagnosis, not a medical device, and not Swain 1997 AMT-4.$0.005 $0.007 Base636 ms2 payers97% up
  26. 78sol.mapleai.shop/jevJev structured decisions via SystemOne, priced by input tokens$0.001 $0.002 Solana683 ms2 payers97% up
  27. 78agents.daedalusdevelopmentgroup.com/v1/research/page-packDDG agent-payable service request$0.005 $0.01 Base436 ms2 payers97% up
  28. 78agents.daedalusdevelopmentgroup.com/v1/trust/historyDDG agent-payable service request$0.001 $0.01 Base325 ms2 payers97% up
  29. 78agents.daedalusdevelopmentgroup.com/v1/url-statusDDG agent-payable service request$0.001 $0.01 Base406 ms2 payers97% up
  30. 78agents.daedalusdevelopmentgroup.com/v1/url-fetchDDG agent-payable service request$0.002 $0.01 Base731 ms2 payers97% up
  31. 78agents.daedalusdevelopmentgroup.com/v1/tls-version-checkDDG agent-payable service request$0.002 $0.01 Base770 ms2 payers97% up
  32. 78agents.daedalusdevelopmentgroup.com/v1/ssl-cert-infoDDG agent-payable service request$0.002 $0.01 Base898 ms2 payers97% up
  33. 78agents.daedalusdevelopmentgroup.com/v1/sentimentDDG agent-payable service request$0.002 $0.01 Base575 ms2 payers97% up
  34. 78agents.daedalusdevelopmentgroup.com/v1/contract-abiDDG agent-payable service request$0.002 $0.01 Base771 ms2 payers97% up
  35. 78web.cyberwarex.com/extractTargeted web scrape: pass a CSS selector and get back only the matching elements from a fully JavaScript-rendered page. Each element returns its tag, text content and every HTML attribute. Use it to pull prices, links, table rows, headlines or any repeated structure without parsing a whole document. Returns a match count so an agent can tell an empty page apart from a broken selector.$0.002 Base1149 ms1 payers80% up
  36. 78agents.dexl.io/v1/audio/transcriptionsTurn speech into text: send base64 audio, get a plain transcript back. Handles WAV, MP3, FLAC and OGG up to about eight minutes per call. Priced per call with x402.$0.0025 $0.001 Base441 ms1 payers97% up
  37. 78agents.dexl.io/v1/tools/transaction-lookupLook up any transaction and its receipt by hash on 28 EVM chains: success or revert, block number, gas used, effective gas price, sender and recipient. Covers Base, Ethereum, Arbitrum, Optimism, Polygon, BSC and more. Use it to confirm a payment or settlement actually landed.$0.003 $0.001 Base992 ms1 payers97% up
  38. 78grov.fun/api/solana/fbfollowersgrov: Facebook Followers. ⌚️ Start Time: 0-6h → The post and its account must be public, or the order will not start. 🔗 Link Example: https://www.facebook.com/grov$0.025 Solana661 ms1 payers71% up
  39. 78grov.fun/api/solana/tiktoksavesTikTok Post Saves via x402 on Solana$0.125 $0.025 solana606 ms1 payers97% up
  40. 78http--forest-gas-station--lcjl27p8lmjs.code.run/domain/registration-stateRegistration/registrar/expiry/status without unrelated domain checks.$0.002 Base Sepolia149 ms1 payers63% up
  41. 78ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/keepingUpWithInflationCalculatorKeeping up with inflation calculator. Computes the pre-tax raise needed under two scenarios — keeping the same dollar amount saved, or maintaining the same savings rate — after inflation raises your spending and a marginal tax rate reduces the raise itself.$0.01 Base271 ms1 payers63% up
  42. 78api.seerium.xyz/v1/meme-radar/smart-flowPump.fun and Pump Fun Solana meme coin smart-flow API for agents. Surfaces clean momentum, tracked wallet flow, liquidity, volume, and meme scores.$0.001 $0.10 Base347 ms1 payers97% up
  43. 78deposit.now/api/depositOpen x402 funding rail: POST target+amount or provision:true+label+amount; pay 0.25% (min $0.001, max $0.25) via x402 on Base or Solana; net forwarded on the same chain. Optional managed child wallets (CDP, Base only). Optional public receipt when storage is configured.$0.011 Base2099 ms1 payers80% up
  44. 78agents.pubrio.com/companies/lookupReturns the stored company record by domain, LinkedIn URL or Pubrio id: firmographics, locations, industry, technologies, social profiles and identifiers, including the domain_search_id other endpoints take. Each call is 1 credit.$0.01 Base1600 ms1 payers86% up
  45. 77api.marketintelligenceapi.com/api/v1/eu/short-positionsGet the most shorted European stocks$0.009 $0.01 Base799 ms5 payers100% up
  46. 77api.invoket.com/legal/eu-actBefore your agent advises on EU compliance or cites EU law: check an act or article is in force at a given date, by CELEX or ELI identifier — consolidated text, status, validity dates and the staggered date it becomes APPLICABLE (in force is not the same thing: the AI Act is in force since 2024-08-01, but its Article 50 only applies from 2026-08-02), from the official EUR-Lex dataset. Covers key EU digital and financial acts (GDPR, DSA, AI Act, MiCA and more).$0.01 Base1908 ms4 payers83% up
  47. 77api.marketintelligenceapi.com/api/v1/markets/stablecoin-flowsGet net stablecoin issuance per chain$0.0045 $0.005 Base463 ms4 payers100% up
  48. 77api.invoket.com/weather/forecastBefore your agent schedules a delivery, plans outdoor work or hedges short-term weather exposure: a point forecast of 2 m temperature, precipitation and 10 m wind — plus opt-in convective, humidity, cloud and snow variables — for any GPS point or city. Deterministic NOAA GFS at 0.25 deg to 16 days (384 h), NOAA GEFS ensemble mean at 0.5 deg to 35 days (840 h) — beyond 16 days the value is an ensemble mean with smoothed extremes: trend, not threshold triggers. The lead selector is optional (omitted, the forecast defaults to the current analysis time) and the response names the model that served it and the exact forecast step.$0.01 Base1560 ms3 payers83% up
  49. 77http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/commerce/variant-resolveResolve requested product options to a canonical public variant when the provider exposes them. Ambiguous or missing options are reported explicitly; no checkout or cart mutation occurs. Base mainnet USDC$0.003 Base363 ms3 payers70% up
  50. 77api.aiskills402.com/v1/skills/prompt-injection-guard/filePrompt Injection Guard: Keeps an AI agent from obeying instructions hidden in what it reads (indirect prompt injection). Web pages, e-mails, files, PDFs, API and tool output, other agents' messages and skill files under review are treated as content, never as orders. The agent is instructed never to pay, transfer, delete or reveal anything because content asked, to report the attempt with a quote and its source, and to still finish the real task. Use whenever the agent reads anything it did not…$0.05 $0.07 Base325 ms3 payers100% up
  51. 77402.com.tr/api/x402/settlement-lineTurn a USDC settlement into bookkeeping lines: amount, accounts, memo, optional Base tx= enrichment (status, timestamp, to). Returns journal JSON plus a two-line CSV. Not tax advice.$0.005 Base554 ms3 payers70% up
  52. 77402.com.tr/api/x402/base-tx🆕 A Base transaction by hash, unedited: from, to, value in wei and ETH, nonce, gas, fee caps, type, and the 4-byte method selector with the calldata size. Flags a contract creation (null to) and a still-pending transaction (null block) rather than leaving you to infer either. Unknown hashes answer found:false, not an error.$0.002 Base722 ms3 payers70% up
  53. 77402.com.tr/api/x402/phone-checkTurn the many ways a phone number gets typed into one E.164 string: strips spacing, brackets, the 00 international prefix and the national trunk zero people include out of habit. Returns country, calling code, national number, and whether the length matches that country's numbering plan. Line type (mobile / fixed) is reported ONLY for countries whose ranges are unambiguous and is null elsewhere with a reason — never guessed. Offline: it does not check that the number is assigned or reachable.$0.002 Base644 ms3 payers70% up
  54. 77readiness.pay.zeroclick.io/api/v1/scansBuy one website report ($3) with product=scan and url, or four competitor scans ($2) with product=comparison and an existing current-rubric runId. Cached results are free. On 202, poll statusUrl, then open reportUrl. If an accepted job fails, keep purchaseId and contact support; do not buy again. Budget and capacity limits apply.$3.00 $2.00 Base751 ms3 payers100% up
  55. 77apexfaucet.xyz/api/x402/arc-poolsArc sniper intelligence, full: every address we resolved buying a new Arc pool first (pools hit, median and fastest seconds to entry, USDC spent), plus the 300 most recent pools with swaps, volume, first buyer, depth at last swap and risk flags, rebuilt from PoolManager events every few minutes.$0.025 $0.009 Base537 ms3 payers100% up
  56. 77apexfaucet.xyz/api/x402/arc-sniper-pnlYou receive EVERY address we have scored in scoreboard[], not a top-and-bottom sample, and summary.addresses states the exact count in the same response (it covers the scanner's rolling 24-hour window, so it rises and falls - which is why the live field is the promise and not a figure frozen in this text); until 2026-09-17 this returned only the best 50 and worst 50 while calling itself the full scoreboard. Arc FIRST-BUY scoreboard.$0.025 $0.009 Base311 ms3 payers100% up
  57. 77x402.fairseal.io/v1/veo/verifyVerify AI agent outputs against a VEO-2 schema. Checks structural validity, SHA-256 hash integrity (if content hash is present), and optional cryptographic signature on the output (if proof.provider_signature is present). Returns a verdict with per-check details.$0.002 $0.02 Base571 ms3 payers100% up
  58. 77gotobi.hugen.tokyo/gotobi/todayIs today a Japanese gotobi day? Gotobi (五十日: 5th, 10th, 15th, 20th, 25th, last business day) drive predictable USDJPY buying pressure before the 9:55 JST Nakane fixing. Weekend and holiday adjustments applied automatically. No public database of gotobi dates exists — this is the only programmatic source. Accepts USDC payments on Base and Solana$0.001 $0.01 Base853 ms3 payers100% up
  59. 77zk.quickai.build/proveQuick ZK Auth v1.0.1 — Semaphore ZK wallet ownership on Base plus USDC balance attestation at snapshot block (not ZK-hidden balance in v1). ERC-8004 bundles with x402 payment binding.$0.05 Base841 ms2 payers70% up
  60. 77ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/upworkFeeCalculatorUpwork freelancer fee calculator. Applies a documented tiered marginal service-fee schedule (20%/10%/5% at $500/$10,000 cumulative per-client lifetime billing thresholds) to compute take-home pay on an invoice, correctly splitting fees across a tier boundary like a tax bracket. Platform fee policies can change; verify current rates before relying on this for financial decisions.$0.01 Base379 ms2 payers70% up
  61. 77xhagents.xyz/api/wallet-profileBalances, contract status, nonce, recent USDC activity and known-address labels for any Base address.$0.10 Base3456 ms2 payers87% up
  62. 77prediction-bot-iggf.onrender.com/topTop 3 Polymarket/Kalshi markets by live X (Twitter) discussion intensity with sentiment scores — agent discovery scan at $0.01 (aligns with Bazaar /top index pricing).$0.01 $0.35 Base400 ms2 payers100% up
  63. 77api.cra-agent.tech/v1/paid/fees/estimateCost of a transaction at the current base fee$0.001 $0.0005 Base663 ms2 payers100% up
  64. 77api.cra-agent.tech/v1/paid/rpc/healthPer-provider RPC latency and head lag$0.001 $0.0005 Base697 ms2 payers100% up
  65. 77api.locus.report/api/locus-radon-zoneEPA Map of Radon Zones county designation (1, 2, or 3) for an address, point, or state and county, for buyer, owner and lender agents. Returns the same records as locus_radon_zone. Use this when your client can only call paid x402 routes. Use locus_radon_zone instead when you can call Locus free tools (REST tools/call or MCP).$0.01 Base485 ms2 payers70% up
  66. 77x402.freeq.one/tools/llm_chatLLM Chat: Chat with a language model. OpenAI-compatible /v1/chat/completions interface. Supports 50+ models. Free models (auto, eco, premium) are $0 — paid models (gpt-5.2, claude-opus-5, deepseek-v4-pro, ...) are charged at cost. See /tools/llm_chat/models for the full model list and rates. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/llm_chat.$0.05 $0.002 Base640 ms1 payers100% up
  67. 77api.cogdepot.com/v1/feedcogDepot agent marketplace API. Paying any offer buys credits for the paying wallet's account; a first payment creates the account.$0.50 $5.00 Base406 ms1 payers100% up
  68. 77api.babyblueviper.com/regimeinvinoveritas /regime — the daily crypto risk-on/off + exposure-scalar read our own live trading bot acts on, recomputable from the raw inputs we return$0.0229 $0.0248 Base488 ms1 payers100% up
  69. 77ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/hybridVsGasSavingsCalculatorHybrid vs gas savings calculator. Compares annual fuel cost between a hybrid and a conventional gas vehicle based on miles driven, gas price, and each vehicle's MPG, and computes the break-even point for the hybrid's price premium.$0.01 Base314 ms1 payers70% up
  70. 77mcpfax-intel.bowling-anthony.workers.dev/market-reportDaily state of the x402 agent economy: observed USDC inflow, seller ranking, category demand, growth, and coverage. Reports its real observation window; concentration adjustment applied only when scan coverage supports it. A FREE register-wide change digest covering the same domain is market_digest on the x402-observatory gateway; buy this for the derived figures, not for what merely changed.$0.50 $0.01 Base390 ms1 payers100% up
  71. 77api.marketintelligenceapi.com/api/v1/fundamentals/BTCUSDLive market intelligence data$0.01 $0.005 Base802 ms1 payers100% up
  72. 77api.locus.report/api/locus-toxic-releasesReturns EPA TRI facilities with detail links, plus NRC and PHMSA verify links, for an address, place, point, or state plus county. Returns the same records as locus_toxic_releases. Use this when your client can only call paid x402 routes. Use locus_toxic_releases instead when you can call Locus free tools (REST tools/call or MCP).$0.01 Base660 ms1 payers70% up
  73. 77api.locus.report/api/locus-rebuild-cost-contextSingle-family rebuild-cost proxy for buyer, owner and lender agents: Census Building Permits Survey value per unit, trended by the BLS construction-input PPI, as a $/sq ft range under a stated size, floored at FEMA $100. Returns the same records as locus_rebuild_cost_context. Use this when your client can only call paid x402 routes. Use locus_rebuild_cost_context instead when you can call Locus free tools (REST tools/call or MCP).$0.01 Base718 ms1 payers70% up
  74. 77api.locus.report/api/locus-market-contextReturns the same Realtor.com-on-FRED listing series and ACS home value and rent as the free route, for agents comparing a county and ZIP. Returns the same records as locus_market_context. Use this when your client can only call paid x402 routes. Use locus_market_context instead when you can call Locus free tools (REST tools/call or MCP).$0.01 Base718 ms1 payers70% up
  75. 77api.locus.report/api/locus-homeowners-insurance-contextACS 2023 median annual homeowners-insurance cost band by mortgage status and median monthly owner costs at ZIP, county, and state, for agents. Returns the same records as locus_homeowners_insurance_context. Use this when your client can only call paid x402 routes. Use locus_homeowners_insurance_context instead when you can call Locus free tools (REST tools/call or MCP).$0.01 Base629 ms1 payers70% up
  76. 77api.locus.report/api/locus-flood-premium-contextMedian and quartiles of annual NFIP policy cost and FEMA full-risk premium for policies in force in the ZIP, split by rated zone (SFHA vs minimal hazard), from OpenFEMA NFIP Policies v3 (monthly), for buyer, owner and lender agents. Returns the same records as locus_flood_premium_context. Use this when your client can only call paid x402 routes. Use locus_flood_premium_context instead when you can call Locus free tools (REST tools/call or MCP).$0.01 Base714 ms1 payers70% up
  77. 77api.locus.report/api/locus-rcra-handlersCited EPA RCRAInfo hazardous-waste handler records for a state and county or ZIP, for buyer, owner and lender agents, via EPA Envirofacts. Returns the same records as locus_rcra_handlers. Use this when your client can only call paid x402 routes. Use locus_rcra_handlers instead when you can call Locus free tools (REST tools/call or MCP).$0.05 Base427 ms1 payers70% up
  78. 77api.locus.report/api/locus-house-price-indexFRED-hosted FHFA all-transactions house price index for the state of a US point: latest index, year-over-year percent change, and units, for agents, from FHFA via FRED. Returns the same records as locus_house_price_index. Use this when your client can only call paid x402 routes. Use locus_house_price_index instead when you can call Locus free tools (REST tools/call or MCP).$0.05 Base566 ms1 payers70% up
  79. 77api.strale.io/x402/sentiment-analyzeAnalyze the sentiment of text. Returns overall sentiment (positive/negative/neutral/mixed), confidence scores, and aspect-level sentiment.$0.054 Base104 ms1 payers67% up
  80. 77api.strale.io/x402/phone-normalizeParse and normalize phone numbers to E.164 format. Detects country, carrier type, validates format. Uses libphonenumber.$0.0324 Base90 ms1 payers67% up
  81. 77x402-factory.com/v1/movers/climateBiggest climate and weather probability moves (1h/6h/24h)$0.02 $0.04 Base432 ms1 payers100% up
  82. 77x402-factory.com/v1/moversMarkets with the largest probability moves over 1h/6h/24h windows — Active markets ranked by absolute blended-probability change over the chosen window, with volume surge ratios. The fastest way for an agent to find where news is landing.$0.02 $0.04 Base357 ms1 payers100% up
  83. 77x402-factory.com/v1/board/economicsAll active economics markets with live probabilities in one call$0.03 $0.04 Base433 ms1 payers100% up
  84. 77402.com.tr/api/x402/know-your-agentx402 proves payment; this answers whether the wallet should be recognised. Resolves a wallet's onchain identity — Coinbase verification (a KYC'd attestation), Basename, and an ERC-8004 registry entry when configured — and corroborates with its payment track record. One verdict: recognised / named / anonymous / unknown. The identity leg alongside x402-seller-check (endpoint) and agent-reputation (behaviour). Identity is not intent; a degraded read is 'unknown'. Not financial advice.$0.02 $0.04 Base400 ms1 payers100% up
  85. 77402.com.tr/api/x402/mev-guardAgents are the easiest MEV prey: predictable, public-mempool, a measured ~$50M/quarter tax. A sandwich only pays when a trade moves the pool enough to front-run (size vs pool depth). This returns an exposure read (low/elevated/high) and a protected-execution plan: a tight min-out, private/off-mempool inclusion (a Cobalt validity tx via validity-build), and splitting a large order into unattackable chunks. Pass tokenOut + amountUsd. Not financial advice.$0.02 $0.04 Base369 ms1 payers100% up
  86. 77402.com.tr/api/x402/rwa-dividend-feedThe timeline corporate-actions doesn't give: PAST multiplier moves (splits, reverse splits, dividend accruals) from MultiplierUpdated events across the 80+ tokenized stocks, newest first — the record a cost-basis or NAV reconstruction needs — plus the queued ERC-8056 schedule, so one call gives history and what's next. A failed warehouse read reads as degraded, never 'none'. Not financial advice.$0.02 $0.03 Base355 ms1 payers100% up
  87. 77402.com.tr/api/x402/x402-seller-checkx402 proves payment, not trust: an agent handed a URL pays blind, and the payee may be a real service or a burner that takes the USDC and vanishes. Give a url and/or a payTo wallet and get GO/WARN/STOP: is the URL a well-formed 402 resource, does its price match, and is the seller wallet sanctioned, a fresh throwaway, or paying a different address than you expected. Screens the PAYMENT side the protocol drops — not a guarantee the service returns good data.$0.02 $0.04 Base421 ms1 payers100% up
  88. 77402.com.tr/api/x402/corporate-actionsA split, reverse split or dividend adjustment on a B20 tokenized equity is settled by moving the multiplier — and balanceOf does NOT change when it fires, so an integrator reading it is silently wrong. Cobalt made the pending change readable, so this lists every scheduled multiplier action across the 80+ tokenized stocks with its effective time, and — with wallet= — which touch a position that wallet holds. Read live from the ERC-8056 schedule; nobody else publishes it. Not financial advice.$0.02 $0.03 Base887 ms1 payers100% up
  89. 77api.teardrop.dev/tools/mcpTeardrop web_search: Real-time web search via Tavily for current events, fact-checking, and research. Use search_depth='advanced' for complex queries (higher quality, higher cost) and topic='news' or 'finance' for headlines or market information.$0.015 $0.005 Base826 ms0 payers100% up
  90. 77api.teardrop.dev/tools/mcpTeardrop validate_opportunity: Return a decision-ready yield-opportunity verdict before capital is deployed. The result branches to sustainable, caution, unsustainable, or insufficient_data and gives the calling agent the evidence needed to proceed, pause, or reject the opportunity.$0.015 $0.005 Base927 ms0 payers100% up
  91. 77api.teardrop.dev/tools/mcpTeardrop get_wallet_history: Get one page of decoded transaction history for an EVM wallet across DeBank-supported chains. Returns send, receive, and approval categories with protocol, token, exchange, gas, and USD metadata. Use the returned next_cursor as start_time to page backward.$0.006 $0.005 Base808 ms0 payers100% up
  92. 77api.teardrop.dev/tools/mcpTeardrop get_defi_positions: Block-accurate DeFi positions for a wallet across Aave v3, Compound v3, Uniswap v3 LP, and Lido on Ethereum or Base. Returns Aave account health (collateral, debt, health factor, LTV) with per-reserve breakdown, Compound v3 market positions, Uniswap v3 LP positions by token ID, and on Ethereum the Lido stETH/wstETH balances with the current wstETH-to-stETH equivalent. Per-protocol failures are isolated - other protocols still return.$0.013 $0.005 Base987 ms0 payers100% up
  93. 77api.teardrop.dev/tools/mcpTeardrop assess_market_resolution: Return a decision-ready resolution-risk verdict for one Polymarket market before an agent trades, quotes, or forecasts it. The result branches to tradeable, ambiguous, avoid, or insufficient_data and names the resolution basis (price_feed, official_source, media_consensus, unspecified), UMA dispute state, rule-wording risks, and executability (liquidity, spread) so the calling agent can act without reading the full rules.$0.025 $0.005 Base515 ms0 payers100% up
  94. 77api.teardrop.dev/tools/mcpTeardrop assess_counterparty_risk: Return a decision-ready counterparty-risk verdict for an EVM address before funds or authority are committed. The result branches to high_risk, caution, acceptable, or insufficient_data with the evidence needed for the calling agent to act.$0.035 $0.005 Base720 ms0 payers100% up
  95. 77market.datapackvibe.com/x402/web-research-papers-small-businessResearch paper search for Small business: Find public research papers and institutional summaries. Focus: small business. Uses live DuckDuckGo search results.$0.01 Base334 ms0 payers70% up
  96. 76api.clawfetch.ai/fetchWeb scraping / URL fetch: retrieve any web page and return clean, LLM-ready markdown text. Strips boilerplate, ads, and navigation. Stealth HTTP client bypasses common bot blocks. Cheapest way to read a webpage.$0.001 Base2797 ms13 payers77% up
  97. 76www.x402financialdata.com/crypto-pricesReal crypto market data in one batched call: price, market cap, market-cap rank, 24h volume/high/low/change, circulating/total/max supply, and all-time-high with date -- for BTC, ETH, SOL, and 17+ other major coins by ticker. Richer than a plain price feed: most stock-data APIs' crypto tickers report null market cap. From CoinGecko. $0.005/call.$0.005 Base1438 ms11 payers77% up
  98. 76api.qist.info/api/hijriConvert Gregorian dates to Hijri (Umm al-Qura calendar) and back. Returns day/month/year, Arabic and English month names, and a formatted Arabic date string. Essential for agents handling Islamic events, Ramadan, Hajj seasons, or Arabic documents.$0.01 Base1675 ms8 payers77% up
  99. 76appstore.use.x402atlas.com/productApple App Store product details — full profile for a single app by product_id: rating, price, description, version history, screenshots & metadata as clean JSON.$0.02 Base1762 ms7 payers77% up
  100. 76api.sirenic.eu/v1/rechercheFrench company search and company lookup by name or SIREN in the official French company registry (INSEE Sirene / INPI RNE open data). Name search returns the top 10 matches with identity, SIREN, NAF code, city and active/ceased status, plus a score_confiance (0-1 match confidence) that helps disambiguate homonyms. The entry point to official data and company data on France: resolve a trading name to its SIREN identifier before pulling the full company profile, filings or financials.$0.002 Base2243 ms7 payers77% up