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 2026-10-02. We parse the payment challenge, we do not complete a payment.

EndpointStatusPriceNetworkSpecChecked
api.magentlab.com calc cat
Jones 2009 COPD Assessment Test (CAT): eight caller-assigned integers 0-5 (cough, phlegm, chest tightness, breathlessn
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc schwab_england
Schwab and England ADL (1969): caller-assigned integer 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, or 100 (completely indep
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc alsfrs_r
Cedarbaum 1999 ALSFRS-R: twelve caller-assigned integers 0-4 (speech, salivation, swallowing, handwriting, cutting_foo
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc wat_1
Franck 2008 WAT-1 (Withdrawal Assessment Tool-1). Eleven caller-assigned integers: ten 0/1 signs plus time_to_calm 0-2
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc gds_15
Sheikh 1986 GDS-15: fifteen yes/no items as asked. Reverse-scored (false=1): satisfied_with_life, good_spirits, happy_
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc rome_iv_cvs
Stanghellini 2016 Rome IV adult CVS B3b. rome_iv_cvs is true iff stereotypical acute vomiting episodes lasting <1 week
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc pre_score
PRE (Pittsburgh Response to Endovascular therapy) score: age + 2×NIHSS - 10×ASPECTS (Rangaraju 2015). Integer PRE, qua
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc asds
Acute Stroke Dysphagia Screen (Edmiaston 2010). Pass only when all five hold: GCS ≥13 and no facial, tongue, or palata
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc mnihss
Meyer/Lyden 2001 modified NIH Stroke Scale (mNIHSS): eleven caller-assigned NINDS-style integers. Drops LOC, facial pa
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc madrs
Montgomery 1979 MADRS: ten caller-assigned integers 0-6 (apparent sadness, reported sadness, inner tension, reduced sl
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc cheops
McGrath 1985 CHEOPS from six caller-assigned observational categories (cry 1-3; facial 0-2; child_verbal 0-2; torso, t
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc iota
Timmerman 2008 simple ultrasound rules. Caller assigns five M-rules (irregular solid tumor; ascites; ≥4 papillary stru
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc rome_iv_chs
Stanghellini 2016 Rome IV CHS. rome_iv_chs is true iff stereotypical episodic vomiting resembling CVS, presentation af
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc ort_oud
Cheatle 2019 revised Opioid Risk Tool (ORT-OUD): nine unweighted yes/no flags (each 1; max 9). No sex. No preadolescen
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc perc_altitude
Altitude-adjusted PERC (Madsen 2019). Same eight Kline factors as sea-level PERC except hypoxia is O2 sat <90% at ~498
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc swede
Strander 2005 Swede score: five caller-assigned 0-2 items (acetowhiteness, margins_surface, vessels, lesion_size, iodi
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc beam
BeAM (bedtime minus pre-breakfast glucose) in mg/dL from Zisman 2016. Provide bedtime_glucose_mg_dl or bedtime_glucose
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc psadt
Pound 1999 PSA doubling time from two rising PSA values: psadt_months = ln(2) x interval_months / ln(psa2_ng_ml / psa1
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc grogan
Grogan 2016 ATTRwt staging: 1 point when NT-proBNP >3000 ng/L; 1 point when cardiac TnT >0.05 ng/mL. Stage I = 0, II =
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc rmi
Jacobs 1990 risk of malignancy index: RMI = U × M × CA125 (U/ml). Caller assigns ultrasound_score 0, 1, or 3 (never 2)
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc alc
Absolute lymphocyte count from WBC and lymphocyte percent (Shapiro 1998). ALC < 1000 cells/mm3 predicts CD4 < 200; ALC
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc ckid_u25
CKiD U25 eGFR (Pierce 2021) for ages 1-25: age- and sex-dependent K times height in meters over creatinine (mg/dL), or
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc psad
Benson 1992 PSA density: psa_ng_ml / prostate volume (ml). Volume is length_cm × width_cm × depth_cm × 0.5 (D1×D2×D3×1
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc 6mwd
Enright 1998 predicted six-minute walk distance (meters) from sex, age 40-80, height_cm, and weight_kg (Table 3 height
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc gir
Neonatal glucose infusion rate (GIR, mg/kg/min) from the unit conversion used with AAP 2011 postnatal glucose homeosta
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc rcvs2
Rocha 2019 RCVS2 score from five caller-assigned items: recurrent or single thunderclap headache (+5), intracranial IC
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc shapiro
Shapiro 2008 blood-culture rule. Indicated if ≥1 major (temperature >39.5 °C, indwelling vascular catheter, suspected
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc ffm
Boer 1984 estimated lean body mass from sex, height_cm, and weight_kg (male 0.407W+0.267H-19.2; female 0.252W+0.473H-4
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc bed
Fowler 1989 BED without a time or repopulation term: BED = n * d * (1 + d / (alpha/beta)). n equal fractions (1-50), d
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc maggic
Pocock 2013 MAGGIC integer score from 13 heart-failure predictors (age, EF, NYHA, creatinine, diabetes, not prescribed
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc newsom
Newsom 2014 modified Rothrock rule for chest radiography in nontraumatic emergency chest pain. CXR indicated if any of
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc pack_years
NCI pack-year smoking exposure: pack_years = packs_per_day x years_smoked. One pack per day for one year is one pack-y
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc bops
Hesselgard 2007 Behavioural Observational Pain Scale from three caller-assigned 0-2 items (facial_expression, verbaliz
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc nvps
Odhner 2003 original NVPS from five caller-assigned 0-2 items (face, activity, guarding, physiologic_i vital signs, ph
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc cstat
Static respiratory-system compliance (Cstat) as in ARDS Network 2000 methods: Cstat (mL/cm H2O) = tidal_volume_ml / (p
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc roth
Chorin 2016 Roth score: caller max_count (integer 1-30, highest number reached counting 1 to 30 in one breath) and cou
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc bpp
Manning 1980 fetal biophysical profile. Five caller-assigned variables, each 2 if normal or 0 if abnormal: fetal breat
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc abbey
Abbey 2004 observational pain scale from six caller-assigned 0-3 items (vocalization, facial_expression, change_in_bod
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc capd
Traube 2014 CAPD: 8 caller-assigned integers 0-4. eye_contact, purposeful_actions, awareness, and communication are re
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc evendo
Dong 2019 EVendo score for screening high-risk esophageal varices. A = (8.5 * INR) + (AST/35); B = (platelets/150) + (
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc bli
Pizov 1999 blast lung injury severity. Mild, moderate, or severe only when inputs match a published definition: mild P
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc care
Cardiac Anesthesia Risk Evaluation (CARE) score (Dupuis 2001). Caller-assigned class 1-5; emergency suffix E only for
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc dka_mpm
Efstathiou 2002 DKA-MPM. Six caller-assigned flags: severe coexisting disease at presentation (+6), pH <7.0 at present
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc psc_revised
Kim 2000 revised natural history model for primary sclerosing cholangitis (no histologic stage). R = 0.03*age_years +
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc kfre
Tangri 2011 4-variable Kidney Failure Risk Equation: 2- and 5-year risk of dialysis or transplant from age, male, eGFR
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc flamm_vbac
Flamm 1997 admission VBAC score, max 10. Points: age under 40 (+2); vaginal birth none 0, before first cesarean 1, aft
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc simplified_bishop
Laughon 2011 simplified Bishop score from three caller-assigned Bishop 1964 integers: dilation, station, and effacemen
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc cci
Corrected count increment (CCI) after platelet transfusion: (post - pre platelet count per uL) * BSA_m2 / (dose in 10^
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc gleason
Gleason 1974 prostatic adenocarcinoma score from caller-assigned primary pattern 1-5 plus secondary pattern 1-5. Score
answers 402 $0.005 base v2 POST 26d ago
api.magentlab.com calc fick
Fick 1870 cardiac output: CO (L/min) = VO2 (ml/min) / (CaO2 - CvO2) with contents in ml/L (ml/dL x10). Caller supplies
answers 402 $0.005 base v2 POST 26d ago
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