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.magentlab.com/api/calc/nafcsHegele 2025 NAFCS. Table 3 points from age or early HTG onset, BMI, abdominal pain or pancreatitis, secondary factors, fasting TG >880 mg/dL or >10 mmol/L, TG/TC >8 (mg/dL) or >3.5 (mmol/L), and apo B <1.0 g/L, plus published interactions. Max 100. ≥60 definite classical FCS; ≥45 very likely. Not a diagnosis or genetic test. Not Simon Broome or Dutch FH. magent does not examine the patient or assay lipids. Not a medical device.$0.005 Base1442 ms1 payers100% up
  2. 90api.magentlab.com/api/calc/dutch_fhDutch Lipid Clinic Network (Nordestgaard 2013 Table 1) familial hypercholesterolaemia score. One LDL (mmol/L or mg/dL / 38.67) plus family, clinical, physical, and DNA groups; per group only the highest. Max 26. Definite >8, probable 6-8, possible 3-5, unlikely 0-2. Score 8 (mutation alone) is probable. Adult Table 1 only; not Simon Broome, not MEDPED, not homozygous FH. magent does not assay lipids, examine tendons or arcus, or sequence genes. Not a medical device and not a diagnosis of FH.$0.005 Base1762 ms1 payers100% up
  3. 90api.magentlab.com/api/calc/medpedWilliams 1993 US MEDPED total cholesterol cutoffs by age and relative degree (first, second, third, or general population). Meets the published criterion iff total cholesterol in mg/dL is greater than the table cutoff (mmol/L converted as mg/dL = mmol/L * 38.67). Total cholesterol only; not Dutch Lipid Clinic or Simon Broome. Not a medical device and not a diagnosis of familial hypercholesterolemia.$0.005 Base1602 ms1 payers100% up
  4. 90api.magentlab.com/api/calc/simon_broomeSimon Broome Register 1991 adult definite familial hypercholesterolaemia: total cholesterol >7.5 mmol/L or LDL cholesterol >4.9 mmol/L plus tendon xanthomas in the patient or a relative (parent, child, grandparent, sibling, uncle, or aunt). One lipid (mmol/L or mg/dL). magent does not assay lipids or examine tendons. Not a diagnosis, not possible FH, and not a DNA or child-cutoff classifier.$0.005 Base1509 ms1 payers100% up
  5. 90api.magentlab.com/api/calc/sampsonSampson 2020 estimated LDL-C from total cholesterol, HDL, and triglycerides (valid through 800 mg/dL). One unit system (mg/dL or mmol/L). Deterministic published equation with citation; not Friedewald, not a diagnosis or statin order.$0.005 Base1358 ms1 payers100% up
  6. 90api.magentlab.com/api/calc/friedewaldFriedewald estimated LDL-C from total cholesterol, HDL, and triglycerides. One unit system (mg/dL or mmol/L). Deterministic published equation with citation; not a diagnosis or statin order.$0.005 Base1515 ms1 payers100% up
  7. 90api.magentlab.com/api/calc/beamBeAM (bedtime minus pre-breakfast glucose) in mg/dL from Zisman 2016. Provide bedtime_glucose_mg_dl or bedtime_glucose_mmol_l independently of AM, and am_glucose_mg_dl or am_glucose_mmol_l. mmol/L converts as mg/dL = mmol/L × 18. Returns beam_mg_dl (1 decimal) and the published analysis band (<0, 0-50, >50). 0 and 50 are 0-50. Does not use a 45 or 55 cutoff, order prandial insulin, or diagnose diabetes.$0.005 Base1032 ms1 payers100% up
  8. 90api.magentlab.com/api/calc/mets_irBello-Chavolla 2018 METS-IR: ln(2×glucose_mg_dl + triglycerides_mg_dl)×BMI / ln(HDL_mg_dl), natural log, two decimals. Supply glucose, triglycerides, and HDL each as exactly one of mg/dL or mmol/L (glucose ×18, TG ×88.57, HDL ×38.67). BMI is caller-supplied (10–80). highest_quartile_t2d is true only when METS-IR > 50.39 (derivation highest T2D-risk quartile). Not a diabetes diagnosis, not HOMA-IR/HOMA2, and not a treatment threshold.$0.005 Base1520 ms1 payers100% up
  9. 90api.magentlab.com/api/calc/homa_irHOMA-IR as (fasting glucose in mmol/L × insulin in µU/mL) / 22.5 (Matthews et al. 1985). Provide glucose_mg_dl (50–1000) or glucose_mmol_l (2.8–55.5), not both; mg/dL converts as mmol/L = mg/dL / 18. Returns the approximation rounded to two decimals. Not HOMA-B, not the HOMA2 computer model, not a diabetes diagnosis, and not an insulin-resistance cutoff.$0.005 Base1581 ms1 payers100% up
  10. 90api.magentlab.com/api/calc/a1c_eagNathan/ADAG A1C to estimated average glucose conversion, or the reverse. Provide exactly one of a1c_percent or eAG. Deterministic published equation with citation.$0.005 Base1116 ms1 payers100% up
  11. 90api.magentlab.com/api/calc/ho_indexHo 2004 day-3 IV-steroid score for severe UC (0–9): mean stools (<4 → 0; 4 ≤ x < 6 → 1; 6 ≤ x ≤ 9 → 2; x > 9 → 4), caller-assigned colonic dilatation (+4), albumin <30 g/L (+1; 30 is not low). Failure: 0–1 → 11%, 2–3 → 43%, ≥4 → 85% (ROC ≥4). Not Travis, not Truelove and Witts, not a colectomy order. magent does not count stools, read films, or measure albumin.$0.005 Base1514 ms1 payers100% up
  12. 90api.magentlab.com/api/calc/montreal_ibdSatsangi 2006 Montreal IBD phenotype (Vienna revision). Crohn: A1-A3, L1-L4, B1-B3, optional +L4 (not when isolated L4) and p. UC: E1-E3 plus S0-S3 as assigned. Compact string, no spaces. Not an activity index (not CDAI/Mayo), not Paris, not IBDU. magent does not perform endoscopy. Not a diagnosis. Not a medical device.$0.005 Base1994 ms1 payers100% up
  13. 90api.magentlab.com/api/calc/oaklandOakland 2017 risk score for safe discharge after acute lower gastrointestinal bleeding. Points from age (0-2), sex (male 1), previous LGIB admission (1), caller-assigned blood on digital rectal examination (1), heart rate (0-3), systolic BP (0-5), and hemoglobin g/dL (0-22); max 35. safe_discharge when score ≤8 (derivation cutoff, not a later US validation). Not a discharge order or LGIB diagnosis. magent does not examine the rectum or assay hemoglobin. Hemoglobin g/dL or g/L.$0.005 Base1282 ms1 payers100% up
  14. 90api.magentlab.com/api/calc/aims65Saltzman 2011 AIMS65 for in-hospital mortality in acute upper GI bleeding: albumin <3.0 g/dL, INR >1.5, caller-assigned altered mental status, systolic BP <=90 mm Hg, and age >65; 1 point each, max 5. Albumin 3.0, INR 1.5, and age 65 do not score; SBP 90 does. Score only; no mortality percentages. Not a diagnosis. Not Glasgow-Blatchford or Rockall. magent does not assess mental status. Albumin g/dL or g/L.$0.005 Base2721 ms1 payers100% up
  15. 90api.magentlab.com/api/calc/bun_creatinine_ratioRichards 1990 BUN/creatinine ratio as bun_mg_dl / creatinine_mg_dl, rounded to one decimal. A ratio of 36 or greater suggests upper gastrointestinal bleeding. A ratio below 36 is not helpful in locating the source and is not a lower-GI class. Provide creatinine_mg_dl (0.1-20) or creatinine_umol_l (9-1768), not both. Not a diagnosis, endoscopy order, or Blatchford urea band. magent does not locate a bleed.$0.005 Base2285 ms1 payers100% up
  16. 90api.magentlab.com/api/calc/glasgow_blatchfordGlasgow-Blatchford score (Blatchford 2000) for need for treatment after upper-gastrointestinal haemorrhage. Points from urea, haemoglobin (sex-specific), systolic BP, heart rate ≥100, melena, syncope, hepatic disease, and cardiac failure; max 23. Score 0 is the published low-risk screen; magent does not invent other GBS bands. Not a diagnosis, not Rockall, and not AIMS65. Urea may be mmol/L or BUN mg/dL; haemoglobin g/L or g/dL.$0.005 Base2524 ms1 payers100% up
  17. 90api.magentlab.com/api/calc/fniTavaglione 2023 fibrotic NASH index (FNI) from AST, HbA1c, and HDL cholesterol. FNI = e^x/(1+e^x) with x = -10.33 + 2.54*ln(AST) + 3.86*ln(HbA1c) - 1.66*ln(HDL mg/dL). HDL may be mg/dL or mmol/L (×38.67). Rule-out ≤0.10; indeterminate between 0.10 and 0.33; rule-in ≥0.33. Not a biopsy, not FIB-4, not the NAFLD fibrosis score, not SAFE, and not BARD.$0.005 Base2479 ms1 payers100% up
  18. 90api.magentlab.com/api/calc/ukeldBarber 2011 United Kingdom end-stage liver disease (UKELD) from INR, creatinine, bilirubin, and sodium in native SI units. UKELD = 5.395*ln(INR) + 1.485*ln(creatinine_umol_l) + 3.13*ln(bilirubin_umol_l) - 81.565*ln(sodium_mmol_l) + 435, nearest integer. below_listing if <49; listing_threshold if ≥49 (UK elective-list 9% 1-year mortality cut). Not a transplant listing or allocation order. Not MELD or MELD-Na.$0.005 Base2322 ms1 payers100% up
  19. 90api.magentlab.com/api/calc/abicDominguez 2008 ABIC score from age, bilirubin, creatinine, and INR. ABIC = (age * 0.1) + (bilirubin_mg_dl * 0.08) + (creatinine_mg_dl * 0.3) + (inr * 0.8). Low <6.71, intermediate 6.71–9.0, high >9.0. Not a diagnosis of alcoholic hepatitis and not a steroid or transplant order.$0.005 Base2320 ms1 payers100% up
  20. 90api.magentlab.com/api/calc/lilleLille model (Louvet 2007) from age, albumin, bilirubin at day 0 and day 7, creatinine, and PT seconds or INR. formula=pt or formula=inr is required; magent does not swap them. Score 0-1 with the published 0.45 cutoff. Deterministic published arithmetic with citation; not a medical device or a steroid order.$0.005 Base2560 ms1 payers100% up
  21. 90api.magentlab.com/api/calc/nafld_fibrosisAngulo 2007 NAFLD fibrosis score from age, BMI, IFG/diabetes, AST, ALT, platelets, and albumin. Deterministic published equation with citation. Not a biopsy or diagnosis. Not FIB-4, APRI, or BARD.$0.005 Base1841 ms1 payers100% up
  22. 90api.magentlab.com/api/calc/peld_crOPTN Policy 9 Table 9-1 PELD-Cr from age, albumin, bilirubin, INR, creatinine or dialysis/CVVHD, and caller-assigned minimum CDC height or weight Z-score. PELD = (sum of Table 9-1 terms + 1.5287) × 10 + 2.82; nearest integer; minimum 6. Albumin, bilirubin, and INR floor at 1.0; creatinine 1.3 mg/dL if >1.3 or dialysis/CVVHD. Not a transplant listing order. magent does not compute CDC LMS Z from height or weight.$0.005 Base1920 ms1 payers100% up
  23. 90api.magentlab.com/api/calc/peldMcDiarmid 2002 PELD from bilirubin, INR, albumin, age under 1 year, and growth failure. Deterministic published listing arithmetic with citation; not a transplant listing recommendation.$0.005 Base1920 ms1 payers100% up
  24. 90api.magentlab.com/api/calc/saagRunyon 1992 SAAG as serum albumin minus ascites albumin in g/dL, rounded to one decimal. portal_hypertension_physiology is true when SAAG >= 1.1 g/dL. Gradient only; not Light-style exudate/transudate criteria for ascites. Not a diagnosis. magent does not diagnose portal hypertension or peritonitis. Serum and ascites albumin as g/dL or g/L.$0.005 Base1919 ms1 payers100% up
  25. 90api.magentlab.com/api/calc/aub_has2Dakik 2019 AUB-HAS2 for 30-day death/MI/stroke after noncardiac surgery: six 1-point elements (history of heart disease, angina or dyspnea, age ≥75, hemoglobin <12 g/dL, vascular surgery, emergency surgery). Low 0-1, intermediate 2-3, high >3 (max 6). Derivation rates 0%, 0.5%, 2.0%, 5.6%, 15.7% by score 0/1/2/3/>3. Not a medical device, not RCRI, not ACS treatment, and not operative clearance.$0.005 Base1762 ms1 payers100% up
  26. 90api.magentlab.com/api/calc/kt_vDaugirdas 1993 second-generation single-pool variable-volume Kt/V. Kt/V = -ln(R - 0.008 * t) + (4 - 3.5 * R) * UF / W, with R = post_bun_mg_dl / pre_bun_mg_dl. Numeric Kt/V to 2 decimals. Not a dialysis prescription, not equilibrated eKt/V, not stdKt/V, and not a urea-reduction-ratio tool. magent does not assign KDOQI or other adequacy targets.$0.005 Base1157 ms1 payers100% up
  27. 90api.magentlab.com/api/calc/psadBenson 1992 PSA density: psa_ng_ml / prostate volume (ml). Volume is length_cm × width_cm × depth_cm × 0.5 (D1×D2×D3×1/2), not π/6. Provide PSA with prostate_volume_ml (1-500) or three dimensions (1-20 cm each), not both. Reports dimensionless psad to 3 decimals and retrospective bands <=0.05, 0.05-0.10, >=0.10. magent does not measure the gland or diagnose cancer. Not a medical device.$0.005 Base1440 ms1 payers100% up
  28. 90api.magentlab.com/api/calc/cp_akiGupta 2024 Figure 2 simple CP-AKI score after first IV cisplatin: age, hypertension, diabetes, current or former smoking, hemoglobin g/L, WBC, albumin g/L, magnesium mmol/L, and cisplatin dose mg. Max 22.5. Low / moderate / high / very_high. Not a diagnosis or chemo order. magent does not assay labs or dose cisplatin.$0.005 Base1756 ms1 payers100% up
  29. 90api.magentlab.com/api/calc/pack_yearsNCI pack-year smoking exposure: pack_years = packs_per_day x years_smoked. One pack per day for one year is one pack-year; two packs per day for 0.5 year is the same. Provide packs_per_day (0-10) or cigarettes_per_day (0-200; 20 cigarettes = 1 pack), not both, plus years_smoked (0-80). magent does not take a smoking history interview. Not a lung-cancer screening order, COPD diagnosis, or medical device.$0.005 Base1022 ms1 payers100% up
  30. 90api.magentlab.com/api/calc/rsbiRapid shallow breathing index (RSBI) as respiratory rate in breaths/min divided by tidal volume in liters (Yang and Tobin 1991). Provide tidal_volume_ml (50–2000) or tidal_volume_l (0.05–2.0), not both. Returns f/VT rounded to one decimal and whether that ratio is greater than 105 breaths/min/L. Not a wean order; magent does not perform a spontaneous breathing trial (SBT).$0.005 Base1044 ms1 payers100% up
  31. 90api.magentlab.com/api/calc/maggicPocock 2013 MAGGIC integer score from 13 heart-failure predictors (age, EF, NYHA, creatinine, diabetes, not prescribed beta-blocker, SBP, BMI, HF duration >18 months, current smoker, COPD, male sex, not prescribed ACEI/ARB), including the published age×EF and SBP×EF extras. Returns integer score and Table 4 1-year and 3-year death probabilities for scores 0-50. Not a diagnosis, not a treatment order, not a reason to withhold therapy. magent does not examine the patient.$0.005 Base1291 ms1 payers100% up
  32. 90api.magentlab.com/api/calc/adhereFonarow 2005 ADHERE CART bedside tree from admission BUN, systolic BP, and serum creatinine. high: BUN>=43, SBP<115, Cr>=2.75; intermediate_1: BUN>=43, SBP<115, Cr<2.75; intermediate_2: BUN>=43, SBP>=115; intermediate_3: BUN<43, SBP<115; low: BUN<43, SBP>=115. Creatinine consulted only when BUN>=43 and SBP<115. CART tree only, not the logistic model or GWTG-HF. Not a heart-failure diagnosis or treatment/ICU order.$0.005 Base1041 ms1 payers100% up
  33. 90api.magentlab.com/api/calc/fickFick 1870 cardiac output: CO (L/min) = VO2 (ml/min) / (CaO2 - CvO2) with contents in ml/L (ml/dL x10). Caller supplies the three measured terms. Does not estimate VO2 from BSA or apply Hufner Hb factors. Rejects CaO2 <= CvO2. Not a catheter order, shock diagnosis, or medical device. magent does not sample blood.$0.005 Base1115 ms1 payers100% up
  34. 90api.dripmetrics.ai/metrics/roll-spreadDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Roll Spread estimates an absolute covariance spread proxy derived from lagged price changes. Discovery examples use the latest 30m window.$0.05 Base1443 ms1 payers100% up
  35. 90x402.deepsearch.com/v1/context/crypto/marketCrypto market overview ($0.1)$0.05 Base1057 ms1 payers100% up
  36. 90dev.gavedu.com/x402/regimeETH market regime signal (TREND-UP/TREND-DOWN/RANGE/CHOP) from EMA10/30 gap+slope+RSI over Coinbase hourly closes — the exact classifier gating our trading lanes.$0.05 Base1158 ms1 payers100% up
  37. 90agentsvc.io/api/v1/proxy/ip-lookupResolve any IPv4 or IPv6 address to location and network data. Returns country, country_code, city, region, postal, lat/lon, timezone, ISP, org, and ASN. Use for fraud detection, geolocation enrichment, or access log analysis.$0.002 Base1069 ms1 payers100% up
  38. 90api.nuasense.com/x402/v1/market/benchmarksGlobal commodity benchmarks: Monthly world commodity benchmark prices in nominal US dollars, back to 1960. Up to 100 rows per call, $0.10 USDC. Filters: source, scope, commodity, unit, kind.$0.10 Base Sepolia1291 ms1 payers100% up
  39. 90hlrisk.paidapis.net/api/hl-liquidation-riskHyperliquid BTC/ETH perpetual futures liquidation risk index: notional at risk if leveraged price moves ±1%/3%/5%, position closest to liquidation, biggest tracked position, funding rate$0.03 Base1017 ms1 payers100% up
  40. 90x402.hydratrader.ai/v1/research-briefResearch brief with citations, key points, and caveats from the public web. When to use: short cited answers for agent questions (fair-use snippets only — no full-text dumps). USDC on Base via x402 (cost-floored) — no API key.$0.08 Base1135 ms1 payers100% up
  41. 90x402.hydratrader.ai/v1/structured-extractExtract structured JSON fields into YOUR schema from pasted text or a public URL. When to use: turn messy public text into typed JSON with confidence + warnings. Refuses login/paywall sources. USDC on Base via x402 — no API key.$0.03 Base1057 ms1 payers100% up
  42. 90api.neurodynamic.tech/v1/audio/cloning/resultIntroductory pricing. Collect completed English cloned speech as WAV, 0.01 USDC on Base, up to 1,000 characters. Requires approved requester credential, authorized private voice and ready job. First read https://api.neurodynamic.tech/cloning for enrolment, queue and payment recovery. No payment is signed while queued. Accent and similarity vary.$0.01 Base1181 ms1 payers100% up
  43. 90runmydata.com/dryscout/dryscout01/helloDryScout01 Hello [TESTNET / EXPERIMENTAL: Base Sepolia, test USDC, not a production service]: paid x402 connectivity check. Returns {"status":"ok"}.$0.001 Base Sepolia1228 ms1 payers100% up
  44. 90agentsvc.io/api/v1/proxy/holidaysPublic and bank holidays for 200+ countries and their regions (states, cantons) for any year, with local names. Optionally check whether a given date is a holiday. Params: country (ISO 3166-1 alpha-2, required, e.g. DE, US, CH, JP), region (e.g. BY, CA, ZH), year (default current), date (YYYY-MM-DD to check), language (e.g. en), include_observances (default false).$0.002 Base1393 ms1 payers100% up
  45. 90lumierepaycheck.org/v1/plans/builderLumière PayCheck Builder plan, 30 days: 3 scoped agent keys, spend limits, signed receipts, 30-day replayable audit trail.$9.00 Base1126 ms1 payers100% up
  46. 90lumierepaycheck.org/v1/score/batchScore up to 100 x402 endpoints in one call. For teams: per-agent spend limits and an audit trail at lumierepaycheck.org/subscribe.$0.01 Base1099 ms1 payers100% up
  47. 90lumierepaycheck.org/v1/wallet-riskWallet-risk check before paying any wallet: OFAC sanctions screening, whether it's a monitored x402 seller's payout wallet and how long it's been stable, recent unconfirmed payout-wallet switches to it (possible hijack), seller declarations, x402 payment history, and on-chain intelligence (first funder, one step back, wallet age and activity). Add compare=<other wallet> for same-owner evidence and a 0-1 confidence. Verdict: clear, caution, or block.$0.01 Base1301 ms1 payers100% up
  48. 90hivemindos-paid-agent-gateway.hivemindos.workers.dev/api/x402/distill/runsTurn supplied Markdown or plain text into a reusable SKILL.md bundle. The exact x402 price is based on the selected source sections and is quoted before payment.$0.29 Base1892 ms1 payers100% up
  49. 90hivemindos-paid-agent-gateway.hivemindos.workers.dev/api/x402/x-transcript/runsTranscribe and summarize one public X post or YouTube video. The exact x402 price is resolved from the source and duration before payment.$0.15 Base1648 ms1 payers100% up
  50. 90hivemindos-paid-agent-gateway.hivemindos.workers.dev/api/x402/voice-bank/runsCreate a private writing voice from supplied guidance and generate a ready-to-use batch of 5-50 social posts from a campaign and business brief.$0.29 Base1255 ms1 payers100% up
  51. 90api.xona-agent.com/base-main/audio/elevenlabs-musicAI music generation using ElevenLabs Music (Replicate). Dynamic pricing: $1 per 120 seconds, max 3 minutes (Base Mainnet).$0.25 Base1128 ms1 payers100% up
  52. 90wazir-x402.duckdns.org/api/vuln-search3ilm vulnerability pattern search — 1032 exact-reconciled findings from 10 Sherlock contests$0.005 Base1524 ms1 payers100% up
  53. 90hivemindos-paid-agent-gateway.hivemindos.workers.dev/api/x402/image-generator/generationsGenerate one downloadable image from a text prompt using a curated HivemindOS image tier. The exact x402 price is quoted before payment.$0.03 Base1764 ms1 payers100% up
  54. 90music.jamesbpollack.com/api/x402/searchSearch the James B. Pollack music catalog by mood, BPM, key, year, or similarity$0.05 Base1156 ms1 payers100% up
  55. 90x402-defi-signals.onrender.com/defi/yieldsTop DeFi yield opportunities per chain from DefiLlama — TVL-filtered, outlier-cleaned (unsustainable meme-pool APYs removed), sorted by APY. Fields: project, symbol, apy_pct, apy_base_pct, tvl_usd, stable. Ideal for yield-hunting agents.$0.01 Base1111 ms1 payers100% up
  56. 90vendsdk.com/api/v/http-headPublic URL status, latency, and response header subset for uptime and health agents$0.002 Base1150 ms1 payers100% up
  57. 90agente402.persikos.com/v1/receiptExtract receipt text into validated JSON using local Ollama. 0.01 USDC per receipt.$0.01 Base1131 ms1 payers100% up
  58. 90agentsvc.io/api/v1/proxy/vin-decodeDecode a 17-character vehicle identification number with NHTSA vPIC: make, model, model year, trim, body, doors, engine (cylinders, displacement, hp, fuel, electrification), drive, transmission, manufacturer and plant. Validates format and the check digit (mandatory for North American VINs). Best coverage for vehicles sold in the US. Params: vin (required).$0.002 Base1426 ms1 payers100% up
  59. 90oceanalt.com/api/x402/traceDeep taint trace: follow funds upstream over multiple hops to see whether they touched illicit sources.$0.01 Base1080 ms1 payers100% up
  60. 90oceanalt.com/api/x402/batchBatch address screening (up to 25 addresses per call).$0.01 Base1475 ms1 payers100% up
  61. 90oceanalt.com/api/x402/decisionPaid: decision + settlement$0.002 solana1551 ms1 payers100% up
  62. 90agent.gexlog.com/agent/rangeMulti-day SPX options market dataset. Returns an array of daily briefings for a date range (max 30 days).$0.05 Base1205 ms1 payers100% up
  63. 90agent.gexlog.com/agent/regimeLightweight gamma regime classification timeline. Returns regime, GEX flip, and key levels per date (max 90 days).$0.02 Base1155 ms1 payers100% up
  64. 90gateway.drillr.ai/api/x402/data/sec_report_searchParagraph-cited semantic search over indexed SEC filings$0.01 Base1106 ms1 payers100% up
  65. 90signals.edge.report/v1/polymarketPolymarket odds search: prediction market questions and outcome prices for a query. Use when an agent needs prediction-market probability data.$0.001 Base1091 ms1 payers100% up
  66. 90signals.edge.report/v1/tokenToken price lookup: USD price, market cap, and volume by CoinGecko id or Base ERC20 contract address. Use for spot token price checks.$0.001 Base1089 ms1 payers100% up
  67. 90utilsforagents.com/v1/url/metadataFetch a URL and extract structured metadata from its HTML: title, description, canonical URL, language, favicon URL, RSS/Atom feed links, Open Graph tags (og:title, og:image, og:type, og:description, og:url), Twitter Card tags, and other meta tags (author, keywords, robots). Use this to get Open Graph data, preview cards, or site information without parsing HTML yourself. Send {"url": "https://..."}. Remote fetch timeout: 5s, max download size: 2 MB.$0.003 Base1374 ms1 payers100% up
  68. 90shield.vainplex.dev/api/cdp/check-emailShieldAPI - x402 security preflight before agents trust an identity, sender, or email counterparty$0.005 Base1551 ms1 payers100% up
  69. 90data.japanagent.dev/vuln/checkCheck an open-source package for known vulnerabilities via the OSV database (Google Open Source Vulnerabilities). Pass package name, ecosystem (npm, PyPI, Go, crates.io, Maven, RubyGems, etc.) and optional version. Returns vulnerability IDs, summaries, severity and fixed versions. Essential pre-install check for coding agents.$0.002 Base1616 ms1 payers100% up
  70. 90app-446.hdgregory.com/runScrapes a URL and returns structured JSON: title, meta tags, headings, paragraphs, links, tables, extracted emails and phone numbers, and word counts. Accepts a single 'url' or a list of 'urls' for batch scraping. Includes retry logic and anti-detection headers.$0.005 Base1662 ms1 payers100% up
  71. 90x402-web-extract.senpi-agent.workers.dev/fetchFetch any public URL and return a clean, readable markdown or JSON extract for AI agents. Pass the target as ?url=<encoded>. Ideal when you need to read webpages, docs, or articles without a browser. Blocks script/style tags, normalizes links and images, strips HTML.$0.01 Base1726 ms1 payers100% up
  72. 90x402-web-extract.senpi-agent.workers.dev/priceReal-time USDC-denominated spot price for any EVM token by contract address or common symbol. Pass ?address=0x... (or ?symbol=ETH) and ?chain=base|ethereum|polygon|arbitrum|optimism|avalanche. Returns price, symbol, decimals, chain, and a timestamp.$0.01 Base1549 ms1 payers100% up
  73. 90address.agentic-jp.com/normalizeJapanese address normalization (住所正規化): standardize a JP address into clean prefecture / city / town / chome-banchi components. Fixes fullwidth/halfwidth digits, old-form kanji, and chome-banchi notation variants, and resolves the 7-digit postal code. Returns a 0-1 confidence score so agents can flag low-quality input. Use for address validation, cleansing, deduplication, and canonicalization before storage or comparison.$0.005 Base1789 ms1 payers100% up
  74. 90address.agentic-jp.com/reverse-geocodeReverse-geocode WGS84 lat/lng coordinates within Japan to a normalized Japanese (JP) address with structured components. Use to label a GPS fix, a map pin, or a photo location with a human-readable address.$0.005 Base1764 ms1 payers100% up
  75. 90api.ideafactorylab.org/x402/ipIP address geolocation -- city, country, org, timezone. Pass ?ip=8.8.8.8$0.001 Base1577 ms1 payers100% up
  76. 90mcpfax-utility.bowling-anthony.workers.dev/v1/validate-emailEmail validation — Syntax check + live MX/deliverability + disposable-domain flag.$0.005 Base1338 ms1 payers100% up
  77. 90oceanalt.com/api/x402/creditsPaid: decision credit pack$0.05 Base1956 ms1 payers100% up
  78. 90hcrb.in/v1/tools/settlement-history-check/callON-CHAIN COUNTERPARTY PROOF: Audit USDC transfers sent and received by any EVM address over the last ~48h of Base blocks. Preflighted so you never pay during an RPC outage.$0.02 Base1155 ms1 payers100% up
  79. 90ioswarm.io/api/v1/news/briefToday's market-news brief in one call: the platform's newest published news digest synthesized with the live market wire into a cited bullet brief — every finding ends with its source URL. $0.05 per call, pay-only over x402 — no account, no free tier, no input required.$0.05 Base1773 ms1 payers100% up
  80. 90mcp.toolstem.com/mcp/secToolstem SEC EDGAR Signal Intelligence MCP — filings, insider transactions, 8-K severity scoring. Per-tool tiered pricing ($0.005–$0.50).$0.005 Base1006 ms1 payers100% up
  81. 90trustscore.dev/api/scoreCheck if a phone number, crypto token, or property address is trustworthy. Returns a 0-100 trust score, confidence, risk flags, and plain-English summary. Detects phone fraud, spam, robocalls, and VoIP; crypto rugpulls, honeypots, and scam tokens; property deed fraud and shady listings. One call, three asset types.$0.02 Base1081 ms1 payers100% up
  82. 90nostrpulse.xyz/nostr/dvm-activityRolling index of NIP-90 Data Vending Machine activity on Nostr. Shows what AI/data services agents are paying each other for right now — the sats-denominated agent-economy leading indicator. Per-kind breakdown of requests, responses, unique customers, unique providers. Query ?window=15m|1h|6h|24h.$0.02 Base1169 ms1 payers100% up
  83. 90api.pdfzen.site/v402/render/pdfRender a PDF. Pass `template` (one of 45 starter slugs: invoice, receipt, contract, certificate, nda, letter, report, quote, purchase-order, lease-agreement, resume, lab-report, boarding-pass, menu, bank-statement, etc.) or `html` (raw Handlebars HTML). Returns application/pdf bytes. $0.006 USDC per render, no API key, no signup. Full catalog: GET /v1/starters (free). Agent docs: https://pdfzen.site/docs/agents/tools$0.006 Base1193 ms1 payers100% up
  84. 90odood.com/v1/extractPOST a URL; get clean, LLM-ready content (Markdown/text/JSON) plus a prompt-injection risk verdict (clean | suspicious | flagged). A defense layer for agents and RAG pipelines, not a guarantee.$0.004 Base1109 ms1 payers100% up
  85. 90paysafe-agent.com/v1/reputation/:addressCounterparty reputation lookup for x402 payments: aggregated post-hoc reports (scam, non-delivery, prompt injection, overcharge, impersonation, replay abuse) filed by other agents, with distinct-reporter counts and risk level.$0.01 Base1103 ms1 payers100% up
  86. 90pathmint.edge.report/v1/messari-gateBEFORE YOU PAY Messari ($0.10–$0.25+): SKIP_MESSARI (use cheaper Pathmint/Signals), PAY_MESSARI (exact official endpoint + price), or ABORT (spoof/ghost). Two cents. Not Messari data — a gate in front of it.$0.02 Base1123 ms1 payers100% up
  87. 90aeonos.basechainlabs.com/api/auditFull AI search visibility audit — AEO/GEO/SEO 4-layer strategy, AI inclusion check, schema gaps, llms.txt review, P1/P2/P3 roadmap. 2.50 USDC.$2.50 Base1068 ms1 payers100% up
  88. 90api.dripmetrics.ai/metrics/average-trade-sizeDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Average Trade Size measures mean base-asset trade size over the specified lookback window. Discovery examples use the latest 30m window.$0.05 Base1477 ms1 payers100% up
  89. 90api.dripmetrics.ai/metrics/trade-intensityDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Trade Intensity measures trades per minute over the specified lookback window. Discovery examples use the latest 30m window.$0.05 Base1130 ms1 payers100% up
  90. 90api.dripmetrics.ai/metrics/buy-sell-volume-imbalanceDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Buy-Sell Volume Imbalance measures net buy versus sell volume as a normalized ratio. Discovery examples use the latest 30m window.$0.05 Base1396 ms1 payers100% up
  91. 90api.dripmetrics.ai/metrics/order-flow-hhiDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Order Flow HHI measures concentration of signed order flow across the specified window. Discovery examples use the latest 30m window.$0.05 Base1279 ms1 payers100% up
  92. 90briefing-service.wholemind.workers.dev/v1/briefings/:key/pages/:pageOne rendered 480x800 1-bit story page of a briefing (N.png = story N; the front page 0.png is free), for e-ink and small displays$0.001 Base1037 ms1 payers100% up
  93. 90api.dripmetrics.ai/metrics/kyle-lambdaDripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Kyle's Lambda estimates price impact per unit of signed order flow for a crypto trading pair over a specified window. Discovery examples use the latest 30m window.$0.05 Base1149 ms1 payers100% up
  94. 90dartapi.ljaysk.com/v1/bidsKorean government procurement (KONEPS/Narajangteo) bid notices, cursor-based delta. Goods, services, construction, foreign tenders with budgets and deadlines.$0.005 Base1036 ms1 payers100% up
  95. 90fiatdock.com/s/svc_f6a08ae9-7ed1-49a9-9e83-0f0662b76cbbPay-per-call: Raw HTTP header dump$0.01 Base1073 ms1 payers100% up
  96. 90fiatdock.com/s/svc_dad44fa0-017c-4f9b-80bb-ba1e7cba7ae9Pay-per-call: JSON Schema validator$0.01 Base1061 ms1 payers100% up
  97. 90fiatdock.com/s/svc_f6af11d8-8c39-4bce-b89d-835fe25133fcPay-per-call: OFAC SDN address screen$0.01 Base1184 ms1 payers100% up
  98. 90fiatdock.com/s/svc_0be67914-ddbc-4cf8-8109-ce2118889073Pay-per-call: Hostname dossier (DNS/RDAP/TLS)$0.01 Base1176 ms1 payers100% up
  99. 90fiatdock.com/s/svc_0dfa243d-bdb7-4957-bafe-2d5da9e2f558Pay-per-call: Email syntax + MX check$0.01 Base1313 ms1 payers100% up
  100. 90fiatdock.com/s/svc_39d3e7d8-69ba-47ea-b613-743b28cd826fPay-per-call: x402 batch honesty probe$0.01 Base1289 ms1 payers100% up