x402watch

52,861 paid endpoints are listed. 32,601 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 23:30 UTC · 52,861 probed

32,601 answering 40215,102 down4,278 rejecting880 no paywall1,897 price drift
  1. 80x402-echo-service.onrender.com/uuidGenerate cryptographically random UUIDv4 identifiers. POST {"count":10} and receive that many unique v4 UUIDs, 1 to 100 per call. Uses the platform CSPRNG. No storage.$0.05 $0.001 Base607 ms2 payers100% up
  2. 80toolrail.dev/latam/dolar-argentinaArgentine dollar quotes in one call: oficial, blue (parallel) and euro rates plus the gap percentage — the region's most watched FX spread.$0.007 $0.005 Base541 ms2 payers100% up
  3. 80tools.halowerk.com/v1/injection/scanPrueft Fremdtext vor der Verarbeitung durch ein Sprachmodell auf zwoelf Angriffsmuster in Deutsch und Englisch, auf unsichtbare Steuerzeichen, auf den Unicode-Tag-Bereich als Schmuggelkanal und auf Base64-Bloecke, deren dekodierter Inhalt selbst wieder Anweisungen enthaelt. Liefert Risikowert, Fundstellen mit Auszug und einen bereinigten Text.$0.002 Base128 ms2 payers67% up
  4. 80places.openverbs.com/v1/business-categoriesCount how many Google businesses fall under each category within a radius of a coordinate, optionally filtered by category or name. Returns categories ranked by business count - for local market sizing, competitor-density analysis and site-selection research. No match → empty results.$0.04 Base666 ms2 payers75% up
  5. 80companies.use.x402atlas.com/beBelgian company lookup in the official KBO/BCE Crossroads Bank for Enterprises (Daily data) by enterprise number (0417.497.106 or BE0417497106) or company name. Returns legal name, status, legal form, start date, registered address, NACE activities and website in a schema shared across countries.$0.001 $0.05 Base541 ms2 payers100% up
  6. 80www.blockchainiq.co/api/x402/v1/dashboards/:slugCrypto analytics dashboard data with an analyst read on each chart. Pick one by slug: market-overview, on-chain-metrics, defi-tvl-and-yields, stablecoin-story, tokenized-rwas, leverage-and-derivatives, liquidity-and-venues, volatility-and-execution, corporate-treasuries, crypto-fundraising, exploit-losses, xrp-ledger, bitcoin-network, ethereum-network, base-network, arbitrum-network, aptos-network, provenance-network, bnb-network. Every panel as JSON. $0.25 per call. Blockchain IQ.$0.25 $0.05 Base453 ms2 payers100% up
  7. 80base.mapleai.shop/jevJev structured decisions via SystemOne, priced by input tokens$0.001 $0.0025 Base520 ms2 payers100% up
  8. 80http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/openapi/preflightVerify OpenAPI/Swagger document reachability, parseability, operations/auth/servers. Base mainnet USDC$0.003 Base169 ms2 payers67% up
  9. 80api.prereason.com/api/cross/correlationsBitcoin correlation matrix. BTC vs SPY, dollar strength (UUP), Treasury yields, VIX relationship signals. Cross-asset diversification data for portfolio agents.$0.01 $0.02 Base725 ms2 payers100% up
  10. 80api.prereason.com/api/btc/pulseBitcoin pulse check. 24hr price change, volume, dominance percentage, fee activity. Quick crypto market data for monitoring agents.$0.01 $0.02 Base771 ms2 payers100% up
  11. 80api.prereason.com/api/btc/gridBitcoin network stress. Epoch pace, difficulty adjustment forecast, hash rate pressure. Block production health for mining analysis agents.$0.01 $0.02 Base772 ms2 payers100% up
  12. 80api.prereason.com/api/btc/contextBitcoin context with on-chain and liquidity data. Active addresses, hash ribbon, difficulty, momentum signals. Intermediate BTC intelligence for AI agents.$0.01 $0.02 Base713 ms2 payers100% up
  13. 80api.prereason.com/api/btcBitcoin price analysis. BTC trend signals, net liquidity correlation, crypto market snapshot for AI trading agents and portfolio tools.$0.01 $0.02 Base818 ms2 payers100% up
  14. 80smartcontractexplainer.onrender.com/api/check-walletCheck a wallet's approvals and explain the risk in plain language$0.10 $0.04 Base347 ms2 payers100% up
  15. 80tenjin.sh/api/read/:handle/:slugPay-per-read pieces by independent publishers. Find one by question first: POST https://tenjin.sh/api/search is free and returns payable candidates or an honest MISS. The 402 carries a free preview; pay it for the full text JSON. Agent guide: https://tenjin.sh/llms.txt. Full catalog: https://tenjin.sh/.well-known/x402$0.01 $0.10 Base501 ms2 payers100% up
  16. 80api.prereason.com/api/btc/energyBitcoin mining economics. Production cost model, hashprice, natural gas pressure. Energy cost and mining profitability for crypto research agents.$0.03 $0.05 Base401 ms2 payers100% up
  17. 80spawnxchange-api-485602182462.europe-west4.run.app/api/v1/items/:uuid/acquireBuy the selected AI-generated code artifact. Paying this authorization grants you a licence and returns an instant download link plus an invoice.$1.00 $0.001 Base Sepolia784 ms2 payers100% up
  18. 80api.magentlab.com/api/calc/wpssMalcovati 2007 WPSS for MDS: WHO category (RA/RARS/5q- 0, RCMD/RCMD-RS 1, RAEB-1 2, RAEB-2 3), IPSS karyotype (good 0, intermediate 1, poor 2; caller assigns the three-group class), regular RBC transfusion 1 (at least one every 8 weeks over 4 months); max 6. very_low 0 through very_high 5–6. Not IPSS-R, not IPSS 1997, not DIPSS. magent does not karyotype or assign WHO category.$0.005 $0.007 Base676 ms2 payers100% up
  19. 80api.magentlab.com/api/calc/wound_classCDC/HICPAC surgical wound classification Class I-IV as assigned by the caller (Mangram 1999 Table 7). Returns wound_class, class_label (e.g. I/Clean), and the published Table 7 description. magent does not inspect the wound. Not SSI percentage rates (not in Table 7). Not a diagnosis of infection. Not antimicrobial prophylaxis selection. Not a medical device.$0.005 $0.007 Base790 ms2 payers100% up
  20. 80api.magentlab.com/api/calc/whrWaist–hip ratio from waist and hip circumference (WHO 2011 expert consultation). WHR = waist_cm / hip_cm after the same unit normalize; optional inches convert as cm = in * 2.54. Deterministic published arithmetic with citation. Not a medical device, body-fat diagnosis, or cardiovascular diagnosis; magent does not apply obesity or sex-specific cutoffs and does not measure the patient.$0.005 $0.007 Base850 ms2 payers100% up
  21. 80api.magentlab.com/api/calc/west_havenWest Haven / Conn hepatic encephalopathy grade 0-4 (Conn 1977). Deterministic published grade with citation. Not a diagnosis; magent does not examine the patient or apply ISHEN covert/overt or psychometric minimal-HE tests.$0.005 $0.007 Base686 ms2 payers100% up
  22. 80api.magentlab.com/api/calc/websterWebster 1968 rating scale: ten caller-assigned integers 0-3 (bradykinesia, rigidity, posture, upper_extremity_swing, gait, tremor, facies, seborrhea, speech, self_care). magent sums only (max 30) and does not examine the patient. Score only; magent does not invent mild/moderate/severe total-score bands. Historical 10-item 0-30 sum. Not MDS-UPDRS and not a Parkinson diagnosis. Not a medical device.$0.005 $0.007 Base458 ms2 payers100% up
  23. 80api.magentlab.com/api/calc/vocal_pennMahmud 2021 VOCAL-Penn 30-day postoperative mortality logistic for cirrhosis. log_odds = -5.472096 + 1.061725*ASA + 0.927904*emergency + surgery dummies (laparoscopic abdominal reference) + Stata 3-knot RCS albumin (2.7, 3.7, 4.4) and platelets (75, 152, 271) + 0.1448936*bilirubin - 0.7541669*obesity + 0.8268748*NAFLD. Percent to 1 decimal. Not a surgical order. magent does not assign ASA or read labs.$0.005 $0.007 Base563 ms2 payers100% up
  24. 80api.magentlab.com/api/calc/vexusBeaubien-Souligny 2020 VExUS C only (not A, B, D, or E). Caller-assigned ivc_dilated (IVC ≥2 cm) plus hepatic, portal, and intra-renal Doppler each normal, mild, or severe. Grade 0 if the IVC is not dilated; 1 if dilated with zero severe patterns; 2 if exactly one severe; 3 if two or more are severe. magent does not perform ultrasound. Not an AKI diagnosis or a fluid-order. Not a medical device.$0.005 $0.007 Base809 ms2 payers100% up
  25. 80api.magentlab.com/api/calc/trunk_impairmentVerheyden 2004 original Trunk Impairment Scale from caller-assigned static sitting balance 0-7, dynamic sitting balance 0-10, and coordination 0-6 (max 23). If static sitting balance is 0, the total is 0. magent does not examine sitting balance or copy the item list. Not TIS 2.0, not Fujiwara 2004, and not a severity band.$0.005 $0.007 Base776 ms2 payers100% up
  26. 80api.magentlab.com/api/calc/steroid_conversionConvert a glucocorticoid milligram dose among hydrocortisone, prednisone, and dexamethasone using Meikle 1977 equivalent doses (20 : 5 : 0.75). Not a taper, stress-dose protocol, or regimen recommendation; mineralocorticoid activity is not converted. Deterministic published table with citation.$0.005 $0.007 Base647 ms2 payers100% up
  27. 80api.magentlab.com/api/calc/simplified_bishopLaughon 2011 simplified Bishop score from three caller-assigned Bishop 1964 integers: dilation, station, and effacement (each 0-3; max 9). Paper bins: dilation 0 / 1-2 / 3-4 / 5-6 cm; station -3 / -2 / -1 or 0 / +1 or +2; effacement 0-30 / 40-50 / 60-70 / 80%. favorable iff score >5 (Laughon compared with original Bishop >8; PPV 87.7% in that paper). magent does not examine the cervix or add consistency or position. Not a cervical exam or induction order.$0.005 $0.007 Base325 ms2 payers100% up
  28. 80api.magentlab.com/api/calc/sichCucchiara 2008 sICH after rtPA for ischemic stroke. Four caller-assigned 1-point flags: age >60, baseline NIHSS >10, baseline glucose >150 mg/dL (8.325 mmol/L), platelets <150,000/mm3. Total 0-4. Any ICH 2.6/9.7/15.1/37.9% for scores 0/1/2/>=3 (scores 3 and 4 share 37.9). magent does not assay glucose or platelets or compute NIHSS. Not a tPA order and not a hemorrhage diagnosis.$0.005 $0.007 Base844 ms2 payers100% up
  29. 80api.magentlab.com/api/calc/shock_indexShock index as heart rate in bpm divided by cuff systolic pressure in mm Hg (Allgöwer and Burri 1967). Returns the original ratio rounded to two decimals. Not a shock diagnosis, treatment target, or cutoff, and does not use MAP or diastolic pressure.$0.005 $0.007 Base875 ms2 payers100% up
  30. 80api.magentlab.com/api/calc/shapiroShapiro 2008 blood-culture rule. Indicated if ≥1 major (temperature >39.5 °C, indwelling vascular catheter, suspected endocarditis) or ≥2 minor (temperature 38.3–39.4 °C, age >65, chills, vomiting, hypotension SBP <90, neutrophils >80%, WBC >18 k, bands >5%, platelets <150 k, creatinine >2.0 mg/dL). Not a culture order or sepsis diagnosis. magent does not examine the patient.$0.005 $0.007 Base882 ms2 payers100% up
  31. 80api.magentlab.com/api/calc/sg_portJacobs 2022 Table 3 Cox linear predictor for overall survival after resected major salivary gland cancer with versus without postoperative radiotherapy. Age per 10 years by PORT, male, Charlson-Deyo per point, gland, PORT by T stage, nodal-positivity ratio band, grade step, and positive margin as ln(HR). Not a 2-/5-/10-year OS percent (no printed S0). Not a radiation order. magent does not compute Charlson-Deyo or count nodes.$0.005 $0.007 Base526 ms2 payers100% up
  32. 80api.magentlab.com/api/calc/serum_osmolalityWorthley 1987 calculated serum osmolality: 2×Na + glucose/18 + BUN/2.8. Optional osmolar gap when a measured osm is supplied. Deterministic published arithmetic with citation; not a measured freezing-point osmometer or a diagnosis.$0.005 $0.007 Base985 ms2 payers100% up
  33. 80api.magentlab.com/api/calc/scormaHeide 2001 SCORMA: extent_percent/5 + 5*intensity_sum + 2*symptom_sum/5. Extent 0-100 (diffuse cutaneous mastocytosis is 100). Four intensity signs 0-3 (pigmentation, vesiculation, elevation/induration, Darier's sign). Five symptoms 0-10 (flushing, provocation factors, diarrhoea, bone pain, pruritus). Max 100. magent does not examine the skin. Not a diagnosis, WHO/ICC criteria, REMA, or tryptase.$0.005 $0.007 Base999 ms2 payers100% up
  34. 80api.magentlab.com/api/calc/schwab_englandSchwab and England ADL (1969): caller-assigned integer 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, or 100 (completely independent; independent with some slowness; independent in most chores; not completely independent; some dependency; more dependent; very dependent; few chores with effort; nothing alone; totally dependent; vegetative). Returns score, max 100, and a stable label. 0% vegetative is scored. Not Hoehn and Yahr and not Karnofsky. magent does not observe the patient. Not a medical device.$0.005 $0.007 Base718 ms2 payers100% up
  35. 80api.magentlab.com/api/calc/rome_iv_globusAziz 2016 Rome IV esophageal globus. rome_iv_globus is true iff nonpainful lump or foreign-body sensation, occurrence between meals, no dysphagia or odynophagia, no gastric inlet patch, not explained by GERD or EoE, no major esophageal motor disorder, last-3-months criteria, and 6-month onset. Caller assigns eight flags. magent does not examine the patient or read endoscopy. Not a diagnosis, not functional heartburn, not Rome IV IBS, not CHS.$0.005 $0.007 Base957 ms2 payers100% up
  36. 80api.magentlab.com/api/calc/rome_iv_child_aerophagiaHyams 2016 Rome IV H1d child aerophagia. True iff air swallowing, distention from intraluminal air that increases during the day, repetitive belching and/or increased flatus, not another condition, and 2-month duration. All three symptom criteria required. Not adult belching disorders or infant regurgitation. Caller assigns five flags. magent does not examine the patient. Not a diagnosis.$0.005 $0.007 Base756 ms2 payers100% up
  37. 80api.magentlab.com/api/calc/rmiJacobs 1990 risk of malignancy index: RMI = U × M × CA125 (U/ml). Caller assigns ultrasound_score 0, 1, or 3 (never 2) and postmenopausal (M=3 if true, else 1). Returns rmi to 1 decimal and exceeds_200 (true if RMI > 200). Not an ovarian-cancer diagnosis and not later RMI-2 or RMI-3.$0.005 $0.007 Base816 ms2 payers100% up
  38. 80api.magentlab.com/api/calc/riskeOlmos 2017 RISK-E (Risk-Endocarditis) for in-hospital mortality after cardiac surgery in active left-sided IE. Age <=51: 0; 52-63: 9; 64-72: 13; >=73: 14. Flags: prosthetic_infection +6, periannular_complications +5, staphylococcus_aureus_or_fungi +9, acute_renal_failure +5, septic_shock +7, cardiogenic_shock +15, thrombocytopenia +7. Returns score and max_score 68 only. Not a diagnosis or surgery decision. magent does not examine the valve or read echo.$0.005 $0.007 Base853 ms2 payers100% up
  39. 80api.magentlab.com/api/calc/ripHevesi 2019 Recurrent Instability of the Patella (RIP) after first-time dislocation. Age <25 scores 2; skeletal immaturity / open physes 1; trochlear dysplasia Dejour A–D (caller-assigned present) 1; TT-TG/PL ratio ≥0.5 scores 1. Max 5. Bands 0–1 low, 2–3 intermediate, 4+ high (10-year recurrent instability 0.0%, 30.6%, 79.2%). Not a surgical order. Not Balcarek 2013 or later PIP models. magent does not read radiographs.$0.005 $0.007 Base878 ms2 payers100% up
  40. 80api.magentlab.com/api/calc/rhigACOG Practice Bulletin 181 RhD immune globulin vial arithmetic. fmh_ml = fetal_cells_percent/100 * maternal_blood_volume_ml. One 300 microgram vial covers 30 mL Rh D-positive fetal whole blood. AABB Technical Manual rounding: if frac(fmh_ml/30) >= 0.5 round up then add one vial; if < 0.5 round down then add one. Minimum 1 vial. Caller assigns Kleihauer–Betke percent and maternal volume; magent does not read slides. Not a prescription or brand order.$0.005 $0.007 Base581 ms2 payers100% up
  41. 80api.magentlab.com/api/calc/remaÁlvarez-Twose 2012 REMA: male +1, female −1; serum baseline tryptase <15 μg/L −1, 15–25 0, >25 +2; pruritus, hives or angioedema present −2, absent +1; syncope or presyncope +3. Range −4 to +7. Clonality likely iff score ≥2. Caller assigns sex, sBt, cutaneous signs, and syncope. Not a medical device, not a diagnosis of SM, not WHO SM criteria. magent does not assay tryptase.$0.005 $0.007 Base724 ms2 payers100% up
  42. 80api.magentlab.com/api/calc/rebound_hyperbilirubinemiaChang 2017 three-variable rebound hyperbilirubinemia score: +15 if GA <38 weeks, −7 × age at phototherapy start in days, −4 × (caller AAP phototherapy threshold − TSB at termination), +50. Scores <20 correspond to a <4% chance of TSB returning to threshold within 72 hours. magent does not assay bilirubin or compute the AAP nomogram. Not Chang 2019. Not a phototherapy order.$0.005 $0.007 Base399 ms2 payers100% up
  43. 80api.magentlab.com/api/calc/rcriLee 1999 revised cardiac risk index: six 1-point factors (high-risk surgery, ischemic heart disease, heart failure, cerebrovascular disease, insulin diabetes, creatinine >2.0 mg/dL) and class I–IV. Deterministic published arithmetic with citation; not operative clearance.$0.005 $0.007 Base869 ms2 payers100% up
  44. 80api.magentlab.com/api/calc/rbc_aboAABB Standards 28th ed. Standard 5.14 RBC ABO/Rh compatibility from caller-assigned recipient and unit ABO (o, a, b, ab) and RhD (positive, negative). Group O RBCs to O/A/B/AB; A to A/AB; B to B/AB; AB to AB. RhD-negative units to either RhD; RhD-positive units only to RhD-positive recipients. Not a transfusion order. magent does not type blood. Does not encode emergency RhD-positive-to-negative exceptions, plasma, or platelets.$0.005 $0.007 Base467 ms2 payers100% up
  45. 80api.magentlab.com/api/calc/raspVertesi 2003 RASP multiplies exclusive source (A), inoculum type (B), and transmission (C) to Z, then total_risk = (1/Z) × volume (D). Table 2: <1/1000 definitely indicated; 1/1000–1/10 000 recommended but optional; 1/10 001–1/100 000 optional but not recommended; >1/100 000 not indicated. Average Canadian community prevalence is baked into the scores. Caller-assigned tokens. Not a PEP order. magent does not interpret the source patient.$0.005 $0.007 Base572 ms2 payers100% up
  46. 80api.magentlab.com/api/calc/puqeKoren 2002 12-hour PUQE: three caller-assigned integers 1-5 (nausea duration, vomiting episodes, and retching episodes over the last 12 hours as in that paper's table). Sum 3-15. magent does not interview the patient. Koren 2002 published no 3-6 / 7-12 / ≥13 total-score cuts; later 24-hour and trimester-long forms are not scored. Not an antiemetic order and not a medical device.$0.005 $0.007 Base477 ms2 payers100% up
  47. 80api.magentlab.com/api/calc/pregnancy_due_datesPregnancy estimated due date from a certain LMP using ACOG Committee Opinion 700 Naegele: edd_days_from_lmp = 280 + (cycle_length_days - 28). Inputs are numeric days_since_lmp (0-294) and cycle_length_days (21-35); those bands are magent clamps. Reports gestational_age_days and days_until_edd (negative if past EDD). Not a dating ultrasound. magent does not interpret imaging. Not a delivery date order.$0.005 $0.007 Base317 ms2 payers100% up
  48. 80api.magentlab.com/api/calc/pre_scorePRE (Pittsburgh Response to Endovascular therapy) score: age + 2×NIHSS - 10×ASPECTS (Rangaraju 2015). Integer PRE, quartiles <0 / 0-24 / 25-49 / >=50, and recanalization-benefit strata <-24 / -24 to 49 / >=50. Not a thrombectomy recommendation. The caller assigns NIHSS and ASPECTS; magent does not assign NIHSS or read CT.$0.005 $0.007 Base792 ms2 payers100% up
  49. 80api.magentlab.com/api/calc/phenytoin_correctionSheiner–Tozer / Winter–Tozer albumin-adjusted total phenytoin: Ccorr = Cobs / ((0.2 or 0.1) × albumin_g_dl + 0.1). Renal factor 0.1 when renal_impairment is true. Deterministic published arithmetic with citation; not a free phenytoin level or a dose.$0.005 $0.007 Base787 ms2 payers100% up
  50. 80api.magentlab.com/api/calc/pegKrebs 2009 PEG from three caller-assigned integers 0-10 (pain_average, enjoyment_of_life, general_activity). Unweighted mean (range 0-10, one decimal). magent does not interview the patient. Krebs 2009 published no diagnostic cutoff; magent does not invent mild, moderate, or severe bands. Not a pain diagnosis, opioid order, or the full Brief Pain Inventory.$0.005 $0.007 Base956 ms2 payers100% up
  51. 80api.magentlab.com/api/calc/pediatric_ettCole 1957 uncuffed pediatric endotracheal tube internal diameter: age_years/4 + 4 millimetres. Deterministic published arithmetic with citation; not a device-selection order or length-based tape.$0.005 $0.007 Base958 ms2 payers100% up
  52. 80api.magentlab.com/api/calc/onlsGraham 2006 ONLS: caller-assigned arm_scale 0-5 plus leg_scale 0-7. Sum 0-12. Score 0 is no limitations. Arm 5 or leg 7 is no purposeful movement of that region. Leg 0 requires walking, stairs, and running unaffected. Remaining grades match ODSS; this is not ODSS and not Adjusted ONLS. magent does not observe the patient. No published total-score severity bands. Not a diagnosis and not a medical device.$0.005 $0.007 Base768 ms2 payers100% up
  53. 80api.magentlab.com/api/calc/nlrNeutrophil-to-lymphocyte ratio from relative neutrophil and lymphocyte percents (Zahorec 2001). Deterministic published arithmetic with citation. Not a sepsis diagnosis; magent does not apply later oncology cutoffs that are not in that paper.$0.005 $0.007 Base889 ms2 payers100% up
  54. 80api.magentlab.com/api/calc/motzerMotzer 1999 MSKCC: KPS <80, LDH >1.5×ULN, hemoglobin <LLN, corrected calcium >10 mg/dL, no prior nephrectomy; 1 point each, max 5. Favorable 0, intermediate 1–2, poor ≥3. Deterministic published score with citation; not an RCC diagnosis or treatment recommendation; not IMDC; not Motzer 2002/2004. magent does not assign KPS or assay LDH, hemoglobin, or calcium.$0.005 $0.007 Base804 ms2 payers100% up
  55. 80api.magentlab.com/api/calc/modified_hoehn_yahrGoetz 2004 modified Hoehn and Yahr stage (Table 1). Caller-assigned tokens 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, or 5.0 with the published description. No stage 0. Not the original integer-only 1-5 scale, not UPDRS, not a diagnosis, and not an outcome measure. magent does not examine the patient. Not a medical device.$0.005 $0.007 Base674 ms2 payers100% up
  56. 80api.magentlab.com/api/calc/midasStewart 1999 MIDAS from five caller-assigned 3-month day counts: missed paid work/school, work/school ≥50% reduced, missed household work, household ≥50% reduced, missed family/social/leisure. Each 0-90; total 0-450. magent does not include questions A or B and does not assign or de-duplicate days. Grades I 0-5 little/minimal, II 6-10 mild, III 11-20 moderate, IV ≥21 severe. Not a migraine diagnosis, not a triptan/prophylaxis order, not GAD-7 or PHQ-9.$0.005 $0.007 Base582 ms2 payers100% up
  57. 80api.magentlab.com/api/calc/mgfaJaretzki 2000 MGFA Clinical Classification (Table 1). Caller-assigned class I, IIa, IIb, IIIa, IIIb, IVa, IVb, or V with the published description. Class V is intubation except routine postoperative management. A feeding tube without intubation is class IVb. Not QMG, not MG-ADL, not Osserman, and not an outcome measure (QMG is separate). magent does not examine the patient. Not a medical device.$0.005 $0.007 Base724 ms2 payers100% up
  58. 80api.magentlab.com/api/calc/menzaMenza 2009 HIV-acquisition score for MSM. Four caller-assigned flags: meth or poppers in the prior 6 months (11), current or prior bacterial STI (4), ≥10 male partners in the prior year (3), unprotected anal intercourse with a positive- or unknown-status partner in the prior year (1). Max 19. Integer score only; no named strata or PrEP cutoff. Not a diagnosis, PrEP order, or test-and-treat protocol. Not HIRI-MSM or SexPro. magent does not take a sexual history.$0.005 $0.007 Base803 ms2 payers100% up
  59. 80api.magentlab.com/api/calc/mekhailMekhail 2005 Motzer extension: KPS <80, LDH >1.5x ULN, hemoglobin <LLN, corrected calcium >10 mg/dL, prior radiotherapy, >=2 metastatic sites; 1 point each, max 6. Favorable 0-1, intermediate 2, poor >=3. Not Motzer 1999 0 / 1-2 / >=3. Not Motzer 2002 time-to-treatment. Mekhail dropped no-prior-nephrectomy. Deterministic published score with citation; not an RCC diagnosis or treatment recommendation; not IMDC. magent does not assign KPS, assay LDH, hemoglobin, or calcium, or image metastases.$0.005 $0.007 Base704 ms2 payers100% up
  60. 80api.magentlab.com/api/calc/mcdonald_20242024 McDonald typical CIS (Montalban 2025). mcdonald_ms iff typical_cis and no_better_explanation and: ≥2 attacks with ≥2 lesions; or ≥2 attacks with one lesion plus DIS; or CIS with ≥2 lesions plus MRI DIT, OCB, or kappa FLC; or CIS with one lesion plus DIS and MRI DIT, OCB, or kappa FLC. DIS = ≥2 of 5 topographies (optic nerve added). Kappa FLC interchangeable with OCB. Not 2017 McDonald. Not PPMS. Not RIS. magent does not read MRI or assay CSF. Not a diagnosis. Not a medical device.$0.005 $0.007 Base820 ms2 payers100% up
  61. 80api.magentlab.com/api/calc/manchesterCerny 1987 Manchester score for small-cell lung cancer: LDH above laboratory ULN, sodium <132 mmol/L, ALP >1.5×ULN, bicarbonate <24 mmol/L, Karnofsky <60, extensive stage; 1 point each, max 6. Good 0–1, intermediate 2–3, poor ≥4. Deterministic published score with citation; not a diagnosis; not the BRCA Manchester score. magent does not stage the cancer, assay labs, or assign Karnofsky performance status.$0.005 $0.007 Base835 ms2 payers100% up
  62. 80api.magentlab.com/api/calc/mallampatiSamsoon 1987 modified Mallampati: caller-assigned integer class 1-4 (I: soft palate, fauces, uvula, pillars; II: soft palate, fauces, uvula; III: soft palate, base of uvula; IV: soft palate not visible). Returns score, max 4, and a stable class label. Not original Mallampati 1985 three-class and not a Cormack-Lehane grade; magent does not look in the mouth or assign an intubation order.$0.005 $0.007 Base978 ms2 payers100% up
  63. 80api.magentlab.com/api/calc/levothyroxine_doseAdult levothyroxine (LT4) full-replacement estimate: daily_lt4_mcg = weight_kg * 1.6 (ATA 2014). Weight in kg or lb. Not a prescription, TSH titration, pediatric or pregnancy-specific dose, or tablet strength. Lean-body-mass adjustment may apply; elderly and cardiac patients often start lower. Deterministic published arithmetic with citation.$0.005 $0.007 Base600 ms2 payers100% up
  64. 80api.magentlab.com/api/calc/karnofskyKarnofsky 1949 Performance Status: caller-assigned integer 10, 20, 30, 40, 50, 60, 70, 80, 90, or 100 (normal; minor signs or symptoms; normal activity with effort; cares for self; occasional assistance; considerable assistance and frequent medical care; disabled; severely disabled; very sick, hospitalization necessary; moribund). Grade 0 (dead) is not scored. Returns score, max 100, and a stable label. Not a performance-status assignment and not ECOG; magent does not observe the patient.$0.005 $0.007 Base759 ms2 payers100% up
  65. 80api.magentlab.com/api/calc/iv_dripINS gravity drip rate: gtt/min = (volume_ml × drop_factor_gtt_ml) / time_min, rounded half away from zero to an integer. Drop factor 10, 15, or 20 gtt/mL macrodrip or 60 gtt/mL microdrip. Also reports mL/hour. Not a pump program, drug order, or device. Deterministic published arithmetic with citation.$0.005 $0.007 Base995 ms2 payers100% up
  66. 80api.magentlab.com/api/calc/isth_batRodeghiero 2010 ISTH/SSC bleeding assessment tool (BAT). Fourteen caller-assigned Table S1 symptom integers (0-4; cns_bleeding 0, 3, or 4 only). magent sums only (max 56) and does not take the bleeding history. This 2010 letter did not identify an abnormal bleeding score; magent does not apply later Elbatarny 2014 / WFH ≥4 male / ≥6 female / ≥3 child cutoffs. Not a VWD diagnosis and not a medical device.$0.005 $0.007 Base846 ms2 payers100% up
  67. 80api.magentlab.com/api/calc/hitsSherin 1998 HITS from four caller-assigned integers 1-5 (hurt, insult, threaten, scream; never=1 to frequently=5). magent does not interview the patient or interpret the items. Sum 4-20. Screen-positive when score ≥10. Deterministic published score with citation; not a diagnosis of intimate partner violence and not a medical device.$0.005 $0.007 Base913 ms2 payers100% up
  68. 80api.magentlab.com/api/calc/hietHigh-dose insulin euglycemia therapy (HIET) from Engebretsen 2011: 1 U/kg insulin bolus, then a 1-10 U/kg/h continuous infusion. Weight in kg or lb. Not a prescription. Used in beta-blocker or calcium-channel-blocker cardiogenic shock. magent does not titrate, choose dextrose, or add DigiFab, glucagon, or calcium. Deterministic published arithmetic with citation.$0.005 $0.007 Base622 ms2 payers100% up
  69. 80api.magentlab.com/api/calc/harkSohal 2007 HARK: four caller-assigned yes/no flags (humiliation, afraid, rape, kick), 1 point each, max 4. Screen-positive when score ≥1 (ROC-optimal cut-off in Sohal 2007). Deterministic published score with citation; not a diagnosis of intimate partner violence and not a medical device. magent does not interview the patient. Not HITS 1-5 scoring. Not the AAS pregnancy item (HARK removed it).$0.005 $0.007 Base961 ms2 payers100% up
  70. 80api.magentlab.com/api/calc/ffmBoer 1984 estimated lean body mass from sex, height_cm, and weight_kg (male 0.407W+0.267H-19.2; female 0.252W+0.473H-48.3). Reports lbm_kg (paper term) with ffm_kg as the same alias. Height 100-220 cm and weight 20-300 kg are magent clamps, not Boer bands. Not a dosing weight, James/Hume formula, or measured body composition. magent does not measure the patient.$0.005 $0.007 Base884 ms2 payers100% up
  71. 80api.magentlab.com/api/calc/evendoDong 2019 EVendo score for screening high-risk esophageal varices. A = (8.5 * INR) + (AST/35); B = (platelets/150) + (BUN/20) + (hemoglobin/15); score = A/B + 1 if ascites. US conventional units. Round to 2 decimals. Published cutoff strictly below 3.90. magent clamps: INR 0.8-4.0, AST 5-4000 U/L, platelets 10-800 k/uL, BUN 2-150 mg/dL, hemoglobin 4-20 g/dL. Not a varices diagnosis or endoscopy order. magent does not assay labs. Not a medical device.$0.005 $0.007 Base849 ms2 payers100% up
  72. 80api.magentlab.com/api/calc/dsiDiastolic shock index as heart rate in bpm divided by cuff diastolic pressure in mm Hg (Ospina-Tascón 2020). Returns the ratio rounded to two decimals. Not a shock diagnosis, treatment target, or cutoff. Distinct from Allgöwer–Burri HR/SBP shock index. The 2020 cohort had no normal-subject control group, so a DSI cutoff to identify abnormality could be misleading.$0.005 $0.007 Base959 ms2 payers100% up
  73. 80api.magentlab.com/api/calc/dli_volumeShi 2020 donor whole-blood liters to process for a CD3+ DLI target: (recipient_weight_kg × cd3_target_per_kg × num_infusions) / (0.6 × donor_alc_per_ul × collection_efficiency × 1e6). Estimates CD3 as 60% of donor ALC. Caller assigns collection_efficiency in (0,1]; the paper used first-quartile 0.57. Deterministic published arithmetic with citation. Not an apheresis order; magent does not run a device or the paper's CD34 HPC algorithm.$0.005 $0.007 Base627 ms2 payers100% up
  74. 80api.magentlab.com/api/calc/dast_10Skinner 1982 10-item Drug Abuse Screening Test (DAST-10). Caller-assigned yes/no items; score is the count of answers in the problem direction (able_to_stop scores 1 if false; the other nine score 1 if true), max 10. Degree-of-problems bands 0 no problems, 1-2 low, 3-5 moderate, 6-8 substantial, 9-10 severe. Not a diagnosis, not a toxicology panel, not DAST-20, and not DAST-28. magent does not interpret the items.$0.005 $0.007 Base795 ms2 payers100% up
  75. 80api.magentlab.com/api/calc/cryoprecipitateCryoprecipitate bag estimate from the AABB Technical Manual calculation as reprinted in Nascimento 2011: 70 mL/kg blood volume, 250 mg fibrinogen per bag, bags = ceil(mg_fibrinogen / 250). Deterministic published arithmetic with citation. Not a transfusion order or major-haemorrhage protocol. The paper notes 100% recovery is likely false and fibrinogen per bag varies. magent does not choose a product or ABO group.$0.005 $0.007 Base348 ms2 payers100% up
  76. 80api.magentlab.com/api/calc/crafftKnight 2002 CRAFFT: six caller-assigned yes/no flags (car, relax, alone, forget, friends, trouble), 1 point each, max 6. Screen-positive when score ≥2 (optimal cutoff in Knight 2002 for any problem / any disorder / dependence). Deterministic published score with citation; not a diagnosis of a substance use disorder and not a medical device. magent does not interview the patient. Not CAGE and not CRAFFT 2.1 / 2.0 quantity questions.$0.005 $0.007 Base895 ms2 payers100% up
  77. 80api.magentlab.com/api/calc/cciCorrected count increment (CCI) after platelet transfusion: (post - pre platelet count per uL) * BSA_m2 / (dose in 10^11). Davis 1999 Transfusion. Returns CCI and the uncorrected increment only. Caller supplies BSA; magent does not compute Nadler BSA from height/weight, assay platelets, emit a 5000 or 7500 refractoriness cutoff, or order a transfusion. Davis 1999 cautions CCI/PPR can distort comparisons of platelet products.$0.005 $0.007 Base552 ms2 payers100% up
  78. 80api.magentlab.com/api/calc/atropine_opEddleston 2004 atropine maintenance infusion after atropinization. infusion_low_mg_h = 0.10 * atropine_load_mg; infusion_high_mg_h = 0.20 * atropine_load_mg. Caller supplies the total atropine loading milligrams already used to stabilize. Not doubling-bolus titration, not pralidoxime, not a prescription. magent does not diagnose organophosphate poisoning and does not choose loading boluses.$0.005 $0.007 Base671 ms2 payers100% up
  79. 80api.magentlab.com/api/calc/apgarApgar score from five 0-2 newborn signs (appearance, pulse, grimace, activity, respiration). Deterministic published score with citation; not a diagnosis.$0.005 $0.007 Base671 ms2 payers100% up
  80. 80api.magentlab.com/api/calc/allowable_blood_lossGross 1983 dilution-corrected allowable blood loss from caller-supplied estimated blood volume and initial versus target hematocrit. Deterministic published arithmetic with citation. Not a transfusion trigger or order. Does not compute Nadler EBV; does not use the uncorrected EBV*(Hi-Hf)/Hi form.$0.005 $0.007 Base474 ms2 payers100% up
  81. 80api.magentlab.com/api/calc/ausdriskChen 2010 AUSDRISK Box 3 waist model (not BMI). Male 3; age 18-34 0, 35-44 2, 45-54 4, 55-64 6, >=65 8; ancestry atsi_or_asian or southern_european_or_pacific 2 (caller-assigned); parental diabetes 3; high glucose 6; antihypertensives 2; current smoker 2; physically inactive 2; waist cat1/2/3 = 0/4/7 (ATSI/Asian vs other cutoffs). Max 35. at_risk iff score>=12. Not a diagnosis. Not FINDRISC.$0.005 $0.007 Base942 ms2 payers100% up
  82. 80api.magentlab.com/api/calc/aspectsBarber 2000 ASPECTS: 10 minus 1 for each caller-assigned MCA region with early ischemic change (C caudate, L lentiform, IC internal capsule, I insular ribbon, M1–M6). Score 0–10. Not pc-ASPECTS. magent does not read the CT. Not a diagnosis, lytic order, or medical device.$0.005 $0.007 Base982 ms2 payers100% up
  83. 80api.magentlab.com/api/calc/ascvd_pceGoff 2013 ACC/AHA pooled-cohort 10-year hard ASCVD percent for age 40-79 from sex, caller-assigned white or african_american cohort, total and HDL cholesterol, treated or untreated systolic BP, smoking, and diabetes. Table A coefficients. Caller assigns cohort; magent does not assign race and does not apply Recommendation 2 as a silent swap. Not PREVENT 2024, not Framingham CHD, not SCORE2, not a diagnosis or statin order. magent does not assay lipids.$0.005 $0.007 Base981 ms2 payers100% up
  84. 80api.magentlab.com/api/calc/acr_eular_pmrACR/EULAR 2012 PMR classification (Dasgupta Table 4). Required: age 50–120, bilateral shoulder aching, abnormal CRP or ESR. Score morning stiffness >45 min 2, hip pain or limited ROM 1, RF or ACPA absent 2, other joint pain absent 1. Without ultrasound: max 6, classified iff ≥4. With ultrasound: add shoulder-and-hip 1 and both shoulders 1; max 8, classified iff ≥5. Not a diagnosis (not meant for diagnostic purposes). magent does not assay CRP/ESR/RF/ACPA or perform ultrasound.$0.005 $0.007 Base757 ms2 payers100% up
  85. 80intel.rallylive.ca/bulk/dnsBulk DNS lookup: up to 20 domains in one $0.01 call. For each: A records, MX records, nameservers, and whether SPF and DMARC exist. Batch domain checks for lead lists, portfolio audits and monitoring at a twentieth of the per-domain price.$0.01 $0.10 Base436 ms2 payers100% up
  86. 80intel.rallylive.ca/site/lead-cardLead card: a one-screen company summary for a CRM from just a domain: company name, one-line description, website, industry hints from keywords, size hints (domain age, tech stack breadth, SaaS vendors), social handles, contact emails, mail provider, location hints and a trust score. $0.01 per lead.$0.01 $0.05 Base335 ms2 payers100% up
  87. 80prediction-bot-iggf.onrender.com/shiftSentiment shift detector for Polymarket/Kalshi: current X score minus last cached score — catch narrative flips between agent polls. Lite discovery price $0.01 (aligns with Bazaar indexes).$0.01 $0.35 Base459 ms2 payers100% up
  88. 80waste.regevidencehub.com/api/v1/waste-rule-preflightGeneral current-operation routing for permit/exemption/duty-of-care and Digital Waste Tracking review using the same deterministic engine as the MCP tool. Payment verification precedes deterministic execution. Not Environment Agency approval or legal advice.$0.02 Base591 ms2 payers75% up
  89. 80works.regevidencehub.com/api/v1/assess-change-impactPaid single sponsor-change impact preflight. Deterministic Skilled Worker sponsor-change impact preflight with official-source freshness gates. Payment verification precedes business execution. Not legal advice or a Home Office decision.$0.02 Base601 ms2 payers75% up
  90. 80taxi.regevidencehub.com/api/v1/preflightOne-authority deterministic England taxi-private-hire licensing preflight for a supported authority. Use for applicant, driver, vehicle, or operator blocker checks, missing-input identification, and the next evidence-gated action before submission or onboarding. This tool does not compare authorities. Deterministic England taxi/private-hire licensing decision with official-source evidence and per-rule freshness guards. Pay only when the blocker check or comparison is decision-relevant. Not licensing-authority approval or legal advice.$0.02 Base700 ms2 payers75% up
  91. 80x402.telnyx.com/v1/chat/completionsFrontier chat completions via Telnyx Inference (MiniMax M2.7). OpenAI-compatible. $0.002856 USDC per call — no API key, no signup, pay per request.$0.0029 $0.0072 Base323 ms2 payers100% up
  92. 80agdata.shveik.dev/x402/google-maps-reviewsGoogle Maps reviews API for AI agents: send a place_id or a Google Maps place URL and get up to 50 reviews as JSON: stars, text and its translation, date, likes, the owner's reply, plus the place's name, address and rating. Sort by newest, relevant, highest or lowest. Reviewer names, profiles and photos are not returned. A place with no reviews is not charged; reviews you paid for but did not get are refunded.$0.0326 $0.0367 Base402 ms2 payers100% up
  93. 80seo.openverbs.com/v1/competitorsFind a domain's organic search competitors: rival domains ranking for the same Google keywords, each with the number of common keywords, average position, total ranked keywords and estimated organic traffic. For competitive SEO research. Empty results if none.$0.05 Base3228 ms2 payers97% up
  94. 80agdata.shveik.dev/x402/amazonAmazon product search$0.033 $0.117 Base418 ms2 payers100% up
  95. 80agdata.shveik.dev/x402/google-mapsGoogle Maps places for a search term, optionally narrowed to an area: {"query":"coffee shops","location":"Prague","limit":5}. Up to 20 places per call. Each place comes back with title, categoryName, address, phone, website, totalScore (rating), reviewsCount, location (lat, lng), openingHours, price, placeId and its Maps url. Common uses are local lead lists, store and competitor mapping, and checking a business's hours or phone number.$0.0922 $0.0962 Base414 ms2 payers100% up
  96. 80agdata.shveik.dev/x402/youtubeYouTube video search and channel videos$0.028 $0.096 Base427 ms2 payers100% up
  97. 80agdata.shveik.dev/x402/tiktokGet TikTok videos for a username, a hashtag or a search keyword. The body is {mode: profile|hashtag|search, query, limit} and limit runs 1-20. Records use the scraper's own field names: text, createTimeISO, playCount, diggCount (likes), commentCount, shareCount, webVideoUrl, hashtags, authorMeta (name, nickName, fans, verified), musicMeta and videoMeta.duration. A leading @ or # in the query is stripped.$0.0867 $0.0907 Base431 ms2 payers100% up
  98. 80agdata.shveik.dev/x402/instagramInstagram posts as JSON. Mode profile returns an account's posts, hashtag returns posts under a tag, and search or user take a keyword and scrape the best-matching hashtag or account. Send {mode, query, limit} with limit 1-20. Each post has a normalized object: caption, likes, comments_count, views, posted_at, media_type, media_url, hashtags, author, author_name, shortcode, url. No Instagram login or API key needed.$0.0647 $0.0687 Base421 ms2 payers100% up
  99. 80agents.daedalusdevelopmentgroup.com/v1/wake/feedDDG agent-payable service request$0.001 $0.01 Base304 ms2 payers100% up
  100. 80shot.halowerk.com/screenshotViewport or full page, optional element selector, dark mode and cookie banner removal. Returns base64 image plus a short lived fetch URL, byte size, load time and the final HTTP status of the page.$0.004 Base3577 ms2 payers97% up