the402 x402 endpoint directory

MCP servers, called rather than listed · we called 16,923 of them · search their tools

Every x402 endpoint we can find, each one called to see what it actually answers and what it quotes. Other directories list what providers claim. This one reports what the endpoint did when we asked it, and says plainly where we could not tell.

Last verified 2026-10-13. We parse the payment challenge, we do not complete a payment.

EndpointStatusPriceNetworkSpecChecked
api.magentlab.com calc doac_score
Aggarwal 2023 DOAC Score (Circulation Table 2) for AF on DOACs: age 65-69 2 / 70-74 3 / 75-79 4 / >=80 5 (<65 0); CrCl
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc chads_65
CCS 2014 CHADS-65 algorithm for nonvalvular AF/AFL stroke-prevention discussion. Oral anticoagulant if age ≥65 or CHF,
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc cha2ds2_va
ESC 2024 CHA2DS2-VA stroke-risk score from age and discrete flags (CHF, hypertension, diabetes, prior stroke/TIA, vasc
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc nrpe
Rao 2021 natriuretic response prediction equation from caller-assigned eGFR and BSA, serum and urine creatinine, and u
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc thakar
Thakar 2005 clinical score for acute renal failure requiring dialysis after open-heart surgery. Points from sex, CHF,
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc mcmahon
McMahon 2013 Table 3 rhabdomyolysis score: age ≤50→0, >50–≤70→1.5, >70–≤80→2.5, >80→3; female 1; Cr <1.4→0, 1.4–2.2→1.
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc uiss
Zisman 2002 localized N0M0 UISS for surgically resected unilateral RCC. Caller-assigned 1997 pathological T (t1-t4), F
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc renal_nephrometry
Kutikov 2009 R.E.N.A.L. nephrometry. Caller-assigned radius le_4 1 / gt_4_lt_7 2 / ge_7 3 (cm); exophytic ge_50 1 / lt
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc stone_nephrolithometry
Okhunov 2013 STONE nephrolithometry for kidney calculi (PCNL). Caller-assigned published item points: size 0_399 1 / 4
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc rifle
RIFLE 2004 (Bellomo Fig. 1) class from baseline and current creatinine in mg/dL and a caller-assigned urine-output cat
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc akin
AKIN 2007 (Mehta Table 2) stage 0-3 from baseline and current creatinine in mg/dL and a caller-assigned urine-output c
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc lips
Gajic 2011 lung injury prediction score (Table 3): caller-assigned predisposing conditions, at most one high-risk surg
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc rdos
Campbell 2010 RDOS for patients unable to self-report dyspnea. Eight caller-assigned 0-2 integers (heart_rate, respira
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc berlin_ards
Berlin Definition of ARDS (Ranieri 2012). berlin_ards iff clinical box (onset within 1 week, bilateral opacities not f
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc pass
Gorelick 2004 three-item Pediatric Asthma Severity Score (PASS): caller-assigned wheezing (0 none or mild; 1 moderate;
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc piama
Caudri 2009 PIAMA Table III decimal clinical prediction score (max 55.1). Male 4.6, post-term 7.3, medium/low parental
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc mapi
Guilbert 2004 mAPI (PEAK Table I). Positive if 4+ wheeze episodes in one year (one MD-diagnosed) plus 1+ major or 2+ m
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc asthma_api
Asthma Predictive Index (Castro-Rodriguez 2000, Tucson Children's Respiratory Study). Stringent positive if early freq
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc pram
Chalut 2000 Preschool Respiratory Assessment Measure (PRAM): five caller-assigned items — oxygen_sat_points (0/1/2), s
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc gold_copd
GOLD 2017 spirometric grade (Vogelmeier executive summary). Post-bronchodilator FEV1/FVC < 0.70 defines obstruction; t
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc nivo
Hartley 2021 NIVO: consolidation, GCS ≤14, AF, and pH <7.25 score 1 each; time to acidaemia >12 h scores 2; eMRCD 1_to
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc du_bois
du Bois 2011 abbreviated four-predictor IPF score from age (<60 → 0, 60–69 → 4, ≥70 → 8), 24-week respiratory hospital
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc mmrc
Mahler 1988 modified Medical Research Council (mMRC) dyspnea grade 0-4 as assigned by the caller. Returns the grade, s
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc ariscat
Canet 2010 ARISCAT simplified risk score (Table 6, β×10 rounded; Mazo 2014 reprints the same points): age <=50=0, 51-8
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc mayo_spn
Swensen 1997 Mayo Clinic logistic probability of malignancy for a 4-30 mm radiologically indeterminate solitary pulmon
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc lent
Clive 2014 LENT score for malignant pleural effusion: pleural LDH IU/L (<1500 → 0, >1500 → 1), ECOG 0-4 (0→0, 1→1, 2→2
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc rapid
Rahman 2014 RAPID score for pleural infection: urea (<5=0, 5-8=1, >8=2 mmol/L), age (<50=0, 50-70=1, >70=2), non-purul
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc euromacs_rhf
Soliman 2018 EUROMACS 9.5-point right-sided heart failure score after continuous-flow LVAD. Five caller-assigned flags
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc acc_aha_hf
2013 ACCF/AHA heart-failure stages (Yancy) from four caller flags: high risk for HF, structural heart disease, prior o
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc framingham_hf
McKee 1971 Framingham CHF criteria. Definite if two major, or one major plus two minor, are concurrent. Nine major and
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc nyha
NYHA 1994 functional capacity class 1-4 as assigned by the caller (Criteria Committee of the New York Heart Associatio
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc dasi
Hlatky 1989 Duke Activity Status Index. Twelve caller-assigned yes/no items (self-care through strenuous sports); Yes
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc rule_of_nines
Adult Wallace 1951 rule of nines: percent TBSA from eight region fractions (0 none, 0.5 half, 1 full) using head 9, ea
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc eoss
Sharma 2009 Edmonton Obesity Staging System (EOSS). Caller-assigned stage 0-4 with the published clinical-picture word
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc orai
Cadarette 2000 Osteoporosis Risk Assessment Instrument (ORAI). Additive Table 4 score: age ≥75 → 15, 65–74 → 9, 55–64
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc osta
Koh 2001 Osteoporosis Self-Assessment Tool for Asians (OSTA). Index = trunc(0.2 × (weight_kg − age)) toward zero. Risk
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc whr
Waist–hip ratio from waist and hip circumference (WHO 2011 expert consultation). WHR = waist_cm / hip_cm after the sam
answers 402 $0.005 base v2 POST 37d ago
api.magentlab.com calc rfm
Relative fat mass (RFM) from height, waist, and sex (Woolcott 2018). Height and waist in meters in the paper; magent a
answers 402 $0.005 base v2 POST 37d ago
x402-seller-0ay3.onrender.com defi tvl
Current TVL (total value locked) of a specific DeFi protocol, source DefiLlama. Parameter: ?protocol=<slug> (default:
answers 402 $0.005 base v2 GET 37d ago
mcpfax-reliability.bowling-anthony.workers.dev payto-change-feed
Observed change feed for listed x402 sellers: declared payTo changes with before/after values, other declared-terms ch
answers 402 $0.005 base v2 GET 37d ago
x402-seller-0ay3.onrender.com defi price
Current USD price of one or more cryptocurrencies (ETH price, BTC price, any token by symbol or contract address), sou
answers 402 $0.005 base v2 GET 37d ago
skim402.com entity-formations latest
Skim Signal: entity formations — new film/TV production-company registrations from official registries in CA, NY, TX,
answers 402 $0.005 base v2 GET 37d ago
gateway.spraay.app v1 prices
Live token prices.
answers 402 $0.005 base v2 GET 37d ago
chess402.vercel.app api cloud-eval
Stockfish cloud evaluation for a FEN position. Returns depth, evaluation, and principal variation(s) when Lichess has
answers 402 $0.005 base v2 POST 37d ago
Zaref repo rate
Returns South Africa's repo and prime lending rates.
answers 402 $0.005 base v2 GET 37d ago
Zaref fuel prices
Returns current South African fuel prices for petrol and diesel.
answers 402 $0.005 base v2 GET 37d ago
mcpfax-utility.bowling-anthony.workers.dev v1 country
Country metadata — Name/ISO code → currency, capital, calling code, languages, flag.
answers 402 $0.005 base v2 GET 37d ago
food-facts.bowling-anthony.workers.dev product
Packaged food by barcode: ingredients, allergens, traces, additives, Nutri-Score, NOVA group and per-100g nutrition, w
answers 402 $0.005 base v2 GET 37d ago
devpkg-intel.bowling-anthony.workers.dev package
Latest version, licence, deprecation, repository and dependency count for an npm, PyPI or crates.io package. Live from
answers 402 $0.005 base v2 GET 37d ago
x402-seller-0ay3.onrender.com rdap domain
RDAP domain lookup — status, registration/expiration dates, registrar, name servers (RDAP is the structured, successor
answers 402 $0.005 base v2 GET 37d ago
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