x402watch

37,650 paid endpoints are listed. 23,105 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 2026-09-30 12:50 UTC · 37,650 probed

23,105 answering 4029,225 down4,327 rejecting993 no paywall2,783 price drift
  1. 76api.magentlab.com/api/calc/nccn_ipiZhou 2014 NCCN-IPI for DLBCL in the rituximab era: age (≤40 0, 41–60 1, 61–75 2, ≥76 3), LDH/ULN (≤1 0, >1–3 1, >3 2), Ann Arbor III or IV 1, major-organ extranodal (bone marrow, CNS, liver/GI tract, or lung) 1, ECOG ≥2 1; max 8. Low 0–1, low_intermediate 2–3, high_intermediate 4–5, high 6–8. Deterministic published score; not a DLBCL diagnosis or treatment choice; not Shipp IPI, not R-IPI, not CNS-IPI. magent does not assay LDH or stage lymphoma.$0.005 $0.007 Base104 ms1 payers86% up
  2. 76api.magentlab.com/api/calc/cns_ipiSchmitz 2016 CNS-IPI: Shipp IPI factors (age >60, ECOG ≥2, LDH > ULN, Ann Arbor III or IV, extranodal sites >1) plus kidney and/or adrenal involvement; 1 point each, max 6. Low 0–1, intermediate 2–3, high 4–6. CNS relapse risk after R-CHOP in DLBCL. Deterministic published score; not a CNS prophylaxis or LP order; not NCCN-IPI; not R-IPI; not a DLBCL diagnosis. magent does not stage lymphoma or image kidneys.$0.005 $0.007 Base110 ms1 payers86% up
  3. 76x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-researchHighest-demand x402 services tagged 'research': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 129 providers and 449 paying wallets measured in this tag.$0.032 $0.016 Base846 ms1 payers93% up
  4. 75stableupload.dev/api/uploadBuy an upload slot. Agent uploads file via returned URL.$2.00 $0.005 Base1462 ms36 payers100% up
  5. 75bykaranteli.com/api/x402/flow-vpinOrder flow toxicity (VPIN) history for BTC, ETH and SOL: 90-day daily VPIN track with closes plus the last 500 volume buckets.$0.002 $0.10 Base1452 ms9 payers100% up
  6. 75store.agentexchange.work/crypto/pricesLatest crypto token prices by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, bitcoin, or base:0x…): current spot price, token symbol, decimals, and a confidence score, for up to 50 coins in one call. Pass ?at=<unix> for the historical price at a point in time. Sourced from DefiLlama across every major chain. Also accepts legacy ?ids=bitcoin,ethereum.$0.01 $0.005 Base1597 ms8 payers100% up
  7. 75api.surplusintelligence.ai/v1/chat/completionsGet OpenAI-compatible inference from many models at market prices via Surplus Intelligence.$0.0033 $0.0033 Base1151 ms8 payers100% up
  8. 75stabletube.dev/api/downloadCreate a paid StableTube download job. StableTube downloads the video server-side, uploads the mp4 to S3, and returns a temporary StableTube-owned download URL when ready.$0.20 $0.10 Base1575 ms5 payers100% up
  9. 75lion-x402.lionmaster-operations.workers.dev/api/x402/keyless-base-rpc-jsonKeyless multi-chain JSON-RPC reads, Base + Ethereum, from $0.001 (?chain=ethereum)$0.01 $0.001 Base1405 ms3 payers100% up
  10. 75proxy.suverse.io/v1/data/ethereum-gas-trackerEthereum mainnet gas prices (safe / standard / fast tier) real-time from Etherscan V2. AI agent MEV bot, trading bot, dApp tx-timing API, ETH gas oracle, pay-per-call. Time transactions for cost efficiency.$0.002 $0.05 Base1340 ms3 payers100% up
  11. 75agent-ready.dev/api/x402/scanPay-per-scan AI agent-readability scan. POST { "url": "https://…" } with an X-PAYMENT header to run a scan with no account or subscription. Two tiers: $0.02 (25 pages) and $0.25 (250 pages), USDC on Base.$0.25 $0.02 Base1111 ms2 payers100% up
  12. 75www.tereno.xyz/api/v1/capabilities/chain.snapshot/invokeWhat is the current state of Base? Latest block number, timestamp, base fee and suggested gas fees in a single cheap call with no parameters — the fastest way to test an x402 payment loop end to end. Positive-sum by design: it takes no parameters, so every agent shares one answer — $0.02 if you are the first inside the freshness window, $0.01 for everyone after you.$0.002 $0.005 Base2102 ms2 payers100% up
  13. 75jev.agents.bakingbad.dev/v1/systemoneAnswer typed questions about a state. Demo only, after explicit user confirmation of /SKILL.md terms. No production or consequential real-world decisions. Returns one answer per question: a yes probability (noul), an option and distribution (choice), or a rubric rating (score). Confidence is not proof of correctness. The response reports model and token usage; pay only against the live 402 quote for the request.$0.0002 $0.00 Base1134 ms2 payers100% up
  14. 75api.gondola-ai.com/v1/images/generationsOpenAI-compatible image generation across the Venice AI model catalog. Pay per request in USDC on Base via x402, with no account and no API key. Overpayment is never lost: it banks as reusable wallet credit for your next call. Model ids and live prices: GET https://api.gondola-ai.com/v1/models.$0.01 $0.0121 Base1144 ms2 payers100% up
  15. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-sentimentSentiment analysis API — text sentiment score with polarity, emotions and positive, negative or neutral classification; social media and review sentiment, real-time. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-sentiment","request":"<input>"}.$0.0025 $0.0025 Base1526 ms2 payers100% up
  16. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-weatherWeather forecast API — current conditions plus hourly and 3-day weather forecast with temperature, wind and humidity for any city worldwide; live weather data for agents. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-weather","request":"<input>"}.$0.0019 $0.0019 Base1568 ms2 payers100% up
  17. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-web-searchWeb search API — live web search engine results for any query with titles, URLs and snippets; real-time SERP for web search, news search and docs search, agent-ready. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-web-search","request":"<input>"}.$0.005 $0.005 Base1666 ms2 payers100% up
  18. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-crypto-pricesBitcoin price in USD, live — real-time crypto prices for BTC, ETH, SOL, BNB, LTC and AMAN with 24h change and multi-source aggregation; spot price feed API for bitcoin and crypto markets, no API key. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-crypto-prices","request":"<input>"}.$0.005 $0.005 Base1584 ms2 payers100% up
  19. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-url-metaURL metadata extractor — page title, meta description, Open Graph image, canonical URL and favicon; SEO and link-preview API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-url-meta","request":"<input>"}.$0.0031 $0.0031 Base1615 ms2 payers100% up
  20. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-web-fetchWeb page fetcher and scraper — fetch any public URL and get clean readable text with HTML stripped; web reader and scraping API for agents. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-web-fetch","request":"<input>"}.$0.0031 $0.0031 Base1413 ms2 payers100% up
  21. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-ens-resolveResolve any ENS name to its address (and reverse); Ethereum Name Service lookup API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-ens-resolve","request":"<input>"}.$0.0025 $0.0025 Base1572 ms2 payers100% up
  22. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-keywordsKeyword and entity extraction API — topics, named entities and key phrases from any text; NLP enrichment. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-keywords","request":"<input>"}.$0.0025 $0.0025 Base1377 ms2 payers100% up
  23. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-domain-infoDomain RDAP lookup — registrar, creation and expiry dates, nameservers and status for any domain; modern WHOIS API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-domain-info","request":"<input>"}.$0.0025 $0.0025 Base1591 ms2 payers100% up
  24. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-rss-readRSS and Atom feed parser — any feed URL into clean structured items (title, link, date, summary); news feed API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-rss-read","request":"<input>"}.$0.0025 $0.0025 Base1465 ms2 payers100% up
  25. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-service-searchService discovery search — find paid x402 API services by keyword with live per-call prices; API marketplace search. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-service-search","request":"<input>"}.$0.0025 $0.0025 Base1538 ms2 payers100% up
  26. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-address-validatorBlockchain address validator — checksum and format validation for AmanChain addresses before you send funds. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-address-validator","request":"<input>"}.$0.0025 $0.0025 Base1469 ms2 payers100% up
  27. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-geo-ipIP geolocation API — country, city, ASN, organization and coordinates for any IPv4 or IPv6 address. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-geo-ip","request":"<input>"}.$0.0019 $0.0019 Base1439 ms2 payers100% up
  28. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-evm-balanceNative ETH and USDC balance of any address on Base; EVM balance checker API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-evm-balance","request":"<input>"}.$0.0012 $0.0012 Base1536 ms2 payers100% up
  29. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-gas-priceLive gas price on Base and Ethereum in gwei with USD conversion; gas fee API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-gas-price","request":"<input>"}.$0.0012 $0.0012 Base1546 ms2 payers100% up
  30. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-email-validateEmail validation API — syntax check, DNS MX record verification and disposable or temporary email detection. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-email-validate","request":"<input>"}.$0.0012 $0.0012 Base1507 ms2 payers100% up
  31. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-fx-ratesLive fiat FX rates API — exchange rates and conversion across 30+ currencies (USD, EUR, GBP, MAD and more). Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-fx-rates","request":"<input>"}.$0.0012 $0.0012 Base1433 ms2 payers100% up
  32. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-world-clockWorld clock API — exact current time for any IANA timezone with UTC offset and correct daylight-saving handling. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-world-clock","request":"<input>"}.$0.0012 $0.0012 Base1443 ms2 payers100% up
  33. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-network-statsBlockchain network statistics — hashrate, total supply, staked amount, transaction count and difficulty; chain analytics API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-network-stats","request":"<input>"}.$0.0037 $0.0037 Base1010 ms2 payers100% up
  34. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-swap-quoteInstant AMM swap quote — exact output amount, price impact and swap fee for any token pair; DeFi exchange-rate and swap pricing API. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-swap-quote","request":"<input>"}.$0.0037 $0.0037 Base1063 ms2 payers100% up
  35. 75amanchain-relay.gitajhd.workers.dev/api/x402/aman-price-feedReal-time AMAN token price in USD from live AMM pool reserves — spot price, 24h change percent, TVL and 24h volume; crypto price oracle feed. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, pools and balances. Pay per call via x402 (USDC on Base), no account, no API key. POST JSON {"serviceId":"aman-price-feed","request":"<input>"}.$0.0037 $0.0037 Base1070 ms2 payers100% up
  36. 75agdata.shveik.dev/x402/redditSearch Reddit or read a subreddit. Use mode hashtag with a subreddit name (no r/), profile with a username, or search with keywords, plus limit 1-20. Every record carries a normalized object with kind, title, body, author, subreddit, url, created_at, upvotes and comments_count. Comments are not fetched. upvotes and comments_count can be null, and subreddit mode may return the subreddit's own record (kind: community) with its description.$0.08 $0.132 Base1325 ms1 payers100% up
  37. 75agent-reader.gm-tools.workers.dev/v1/metaGet a web page's metadata$0.001 $0.002 Base1211 ms1 payers100% up
  38. 75agent-deals.gm-tools.workers.dev/v1/bestCheapest working x402 service for a task$0.001 $0.002 Base1147 ms1 payers100% up
  39. 75agents.dexl.io/v1/agents/:id/runRun a DexL agent: the model reasons, calls tools when it needs them, and returns an answer - paid per run with x402$0.0012 $0.001 Base1455 ms1 payers100% up
  40. 75digital-myto.onrender.com/api/whales/latestLatest Base USDC whale transfers from $10,000+ for AI agents and trading bots.$0.009 $0.005 Base1256 ms1 payers100% up
  41. 75agents.dexl.io/v1/tools/transaction-lookupLook up any transaction and its receipt by hash on 28 EVM chains: success or revert, block number, gas used, effective gas price, sender and recipient. Covers Base, Ethereum, Arbitrum, Optimism, Polygon, BSC and more. Use it to confirm a payment or settlement actually landed.$0.001 $0.01 Base1150 ms1 payers100% up
  42. 75xhagents.xyz/api/howto/x402-registerRegister an x402 endpoint so agents can find and pay it (x402scan + Coinbase Bazaar). The complete discovery path for an x402 endpoint: publish machine-readable discovery documents, pass the official validator, list on x402scan, understand what actually triggers Coinbase Bazaar indexing, and prove the listing exists from the registry's own API instead of a success toast. Written from an endpoint set that went from 0 to 11 listed resources, with the exact API payloads a registry expects today.$0.75 $0.30 Base1407 ms1 payers100% up
  43. 75xhagents.xyz/api/howto/create-x402-endpointBuild an x402 paid endpoint that passes the validator, gets indexed and takes real USDC. End-to-end recipe for turning any HTTP capability into an x402 endpoint that an unknown agent can find, pay for and consume: the payment gate, the verifier rules, per-route pricing, the concurrency traps, the nginx wiring, the discovery surface, plus the money-path bugs we only found when real USDC moved. Comes with the exact commands we run.$0.75 $0.30 Base1023 ms1 payers100% up
  44. 75api.magentlab.com/api/calc/mmeCDC 2022 morphine milligram equivalents from a published opioid key and dose (mg/day, or mcg/hr for fentanyl_transdermal). Estimates only; do not use MME to convert one opioid to another. Not a taper protocol or OUD dosing tool.$0.005 $0.007 Base2147 ms1 payers100% up
  45. 75api.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 Base2299 ms1 payers100% up
  46. 75api.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 Base2286 ms1 payers100% up
  47. 75api.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 Base1282 ms1 payers100% up
  48. 75api.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 Base1288 ms1 payers100% up
  49. 75api.magentlab.com/api/calc/figo_ovarianPrat 2014 FIGO staging for cancer of the ovary, fallopian tube, and peritoneum as assigned by the caller (IA, IB, IC1-IC3, IIA, IIB, IIIA1i, IIIA1ii, IIIA2, IIIB, IIIC, IVA, IVB). Returns the canonical stage and Prat 2014 defining features. magent does not read imaging or pathology and does not apply AJCC TNM. Not endometrial or cervical FIGO. Not a diagnosis. Not a medical device.$0.005 $0.007 Base1194 ms1 payers100% up
  50. 75api.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 Base1277 ms1 payers100% up
  51. 75api.magentlab.com/api/calc/imwg_responseKumar 2016 IMWG measurable serum+urine M-protein response. First-match PD, sCR, CR, VGPR, PR, MR, or SD from caller-assigned flags. sCR is CR plus normal FLC ratio and no clonal BM cells by IHC. CR is negative serum and urine IFE, no plasmacytomas, and BMPC <5%. VGPR is electrophoresis-negative or ≥90% serum M-protein reduction with urine M-protein <100 mg/24 h. Not a diagnosis. Not MRD. Not FLC-only. magent does not assay labs.$0.005 $0.007 Base2082 ms1 payers100% up
  52. 75api.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 Base1080 ms1 payers100% up
  53. 75api.magentlab.com/api/calc/lanskyLansky 1987 Play-Performance Scale: caller-assigned integer 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, or 100 from parent-rated play over the past week (fully active; minor physical restriction; tires more quickly; restricted play; quieter activities; lying around, quiet play; mostly in bed; bedbound; often sleeping; no play; unresponsive). Grade 0 is scored. Returns score, max 100, and a stable label. Not a performance-status assignment, not Karnofsky, not ECOG; magent does not observe the child.$0.005 $0.007 Base1678 ms1 payers100% up
  54. 75api.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 Base1759 ms1 payers100% up
  55. 75api.magentlab.com/api/calc/iceLee 2019 Immune Effector Cell-Associated Encephalopathy (ICE) points: orientation 0-4 (year, month, city, hospital), naming 0-3 (three objects), following commands 1, writing 1, attention 1 (count backward from 100 by tens); total 0-10. Caller-assigned; magent does not perform the exam. Not ASTCT ICANS grading. Deterministic published arithmetic with citation; not a medical device.$0.005 $0.007 Base2114 ms1 payers100% up
  56. 75api.magentlab.com/api/calc/nci_ctc_mucositisNCI CTC v2.0 Mucositis due to radiation (Trotti 2000). none → 0; erythema → 1; patchy_pseudomembrane (≤1.5 cm, noncontiguous) → 2; confluent_pseudomembrane (contiguous >1.5 cm) → 3; necrosis_or_deep_ulcer (may include bleeding not induced by minor trauma) → 4. magent does not examine the mucosa. Not CTC stomatitis/pharyngitis, CTCAE v3/v4/v5, or WHO mucositis. Not a diagnosis or medical device.$0.005 $0.007 Base1159 ms1 payers100% up
  57. 75api.magentlab.com/api/calc/ipss_rGreenberg 2012 IPSS-R for MDS: cytogenetics (very_good 0, good 1, intermediate 2, poor 3, very_poor 4; caller assigns the Schanz subgroup), BM blasts, hemoglobin g/dL, platelets, and ANC; max 10. very_low ≤1.5 through very_high >6. Deterministic published score with citation; not a diagnosis or transplant listing; not IPSS 1997 or IPSS-M. magent does not karyotype.$0.005 $0.007 Base1338 ms1 payers100% up
  58. 75api.magentlab.com/api/calc/hct_ciSorror 2005 HCT-specific comorbidity index. Seventeen caller-assigned comorbidities with published weights 1, 2, or 3 (max 26). Pulmonary moderate vs severe and hepatic mild vs moderate/severe are mutually exclusive. Risk groups: 0 low, 1–2 intermediate, ≥3 high. Caller supplies the published category; magent does not interpret PFTs or echo and does not list for transplant. Not Charlson. Not a diagnosis. Not a medical device.$0.005 $0.007 Base1705 ms1 payers100% up
  59. 75api.magentlab.com/api/calc/flaccMerkel 1997 FLACC from five caller-assigned 0-2 items (face, legs, activity, cry, consolability) using that paper's 0/1/2 descriptors. magent sums only (max 10) and does not observe the child. No later intensity cutoffs. Not a pain diagnosis or analgesic order. Not PAINAD.$0.005 $0.007 Base1606 ms1 payers100% up
  60. 75api.magentlab.com/api/calc/abbeyAbbey 2004 observational pain scale from six caller-assigned 0-3 items (vocalization, facial_expression, change_in_body_language, behavioural_change, physiological_change, physical_changes) using that paper's absent/mild/moderate/severe descriptors. magent sums only (max 18) and returns Abbey 2004 bands: 0-2 none, 3-7 mild, 8-13 moderate, 14+ severe. magent does not observe the patient. Not a pain diagnosis or analgesic order. Not PAINAD.$0.005 $0.007 Base1172 ms1 payers100% up
  61. 75api.magentlab.com/api/calc/awolDouglas 2013 AWOL: four caller-assigned yes/no flags (age ≥80, unable to spell WORLD backward, not fully oriented to place, nurse-rated illness moderately ill/severely ill/moribund), 1 point each, max 4. Combined-population observed delirium 2/4/14/20/64% at scores 0–4. Deterministic published score with citation; not a delirium diagnosis, not CAM-ICU, not 4AT, and not a medical device. magent does not interview the patient or collect an integer age.$0.005 $0.007 Base1286 ms1 payers100% up
  62. 75api.magentlab.com/api/calc/nincds_adrdaMcKhann 1984 NINCDS-ADRDA diagnostic category as assigned by the caller (definite, probable, possible, or unlikely). Returns the token and the published defining-features description. magent does not examine the patient. Not NIA-AA 2011/2018. Not DSM. Not an Alzheimer's diagnosis. Not a medical device.$0.005 $0.007 Base1365 ms1 payers100% up
  63. 75api.magentlab.com/api/calc/4at4AT (Bellelli 2014): alertness (normal 0, abnormal 4) + AMT4 mistake count 0/1/2 + attention 0/1/2 + acute change or fluctuation (false 0, true 4). Max 12. Band 0 unlikely, 1–3 possible cognitive impairment, ≥4 possible delirium. Not a delirium or dementia diagnosis. magent does not examine the patient. AMT4 is the caller-assigned mistake count only; this API does not collect age, date of birth, place, or year.$0.005 $0.007 Base1002 ms1 payers100% up
  64. 75api.magentlab.com/api/calc/aimsGuy 1976 Abnormal Involuntary Movement Scale (AIMS): seven 0-4 movement items summed (max 28). Rate highest severity observed. Items 8-12 (overall severity, incapacitation, awareness, dental problems, dentures) are required and returned, not added to the total. No activation subtraction. Not a tardive dyskinesia diagnosis. magent does not examine the patient. Not a medical device.$0.005 $0.007 Base2040 ms1 payers100% up
  65. 75api.magentlab.com/api/calc/capdTraube 2014 CAPD: 8 caller-assigned integers 0-4. eye_contact, purposeful_actions, awareness, and communication are reverse-scored in that paper (never contributes 4; 0 is the never-delirium pole after that reverse key). Total 0-32. Screen-positive iff score ≥9. magent does not examine the child or invent a developmental-delay cutoff. Not a psychiatric diagnosis.$0.005 $0.007 Base1221 ms1 payers100% up
  66. 75api.magentlab.com/api/calc/cam_icuCAM-ICU (Ely 2001). Delirium is present iff Feature 1 (acute onset or fluctuating course) and Feature 2 (inattention) both hold, and Feature 3 (disorganized thinking) or Feature 4 (altered level of consciousness) also holds. The caller assigns each feature as already determined. magent does not observe the patient, administer RASS, or run the attention screening exam. Not a diagnosis and not a medical device.$0.005 $0.007 Base1919 ms1 payers100% up
  67. 75api.magentlab.com/api/calc/gi_gpaSperduto 2019 updated GI-GPA: KPS <80 = 0, 80 = 1.0, 90-100 = 2.0; age >=60 = 0, <60 = 0.5; extracranial metastases present = 0, absent = 0.5; number of brain metastases >3 = 0, 2-3 = 0.5, 1 = 1.0. Max 4.0. GPA 0-1.0 / 1.5-2.0 / 2.5-3.0 / 3.5-4.0 median survival 3, 7, 11, 17 months (abstract/KM). Not a treatment order. Not lung-molGPA. magent does not assign KPS.$0.005 $0.007 Base1981 ms1 payers100% up
  68. 75api.magentlab.com/api/calc/thriveTHRIVE (Totaled Health Risks in Vascular Events; Flint 2010 AJNR) from trichotomized age (<=59 0, 60-79 1, >=80 2), trichotomized NIHSS (<=10 0, 11-20 2, >=21 4), and chronic disease scale (hypertension, diabetes, atrial fibrillation; 1 each). Score 0-9; bands low 0-2, moderate 3-5, high 6-9 with published 90-day mRS 0-2 and mortality percents. Not a treatment recommendation. magent does not examine the patient or assign NIHSS.$0.005 $0.007 Base1712 ms1 payers100% up
  69. 75api.magentlab.com/api/calc/four_scoreFOUR score (Wijdicks 2005) from caller-assigned eye, motor, brainstem, and respiration integers 0-4; magent sums only (max 16) and does not pick a component from a narrative. Eye 4 tracking/blink to command to 0 closed to pain; motor 4 thumbs-up/fist/peace to 0 none or myoclonus status; brainstem 4 pupil and corneal present to 0 pupil, corneal, and cough absent; respiration 4 not intubated regular to 0 ventilator rate or apnea. Not a diagnosis and not a GCS conversion.$0.005 $0.007 Base1707 ms1 payers100% up
  70. 75api.magentlab.com/api/calc/modified_fisherFrontera 2006 modified Fisher CT grades 0-4 for subarachnoid hemorrhage as assigned from CT by the caller. Returns the published grade and description (0 no SAH or IVH; 1 focal or diffuse thin SAH, no IVH; 2 thin SAH with IVH; 3 thick SAH, no IVH; 4 thick SAH with IVH). Not Fisher 1980 original groups 1-4. Not a diagnosis; magent does not read the CT or invent a millimetre cutoff or vasospasm percentage.$0.005 $0.007 Base1684 ms1 payers100% up
  71. 75api.magentlab.com/api/calc/phasesGreving 2014 PHASES 5-year rupture risk for an unruptured intracranial aneurysm. Caller assigns population (north_america_europe 0, japanese 3, finnish 5), hypertension (1), age >=70 (1), size mm (<7 0, 7.0-9.9 3, 10.0-19.9 6, >=20 10), earlier SAH (1), and site (ica 0, mca 2, aca_pcom_posterior 4). Returns points (max 22) and grouped 5-year risk percent. Not a treatment order or PHASES of care. magent does not assign ancestry or read imaging.$0.005 $0.007 Base2668 ms1 payers100% up
  72. 75api.magentlab.com/api/calc/esusESUS (Hart 2014). True iff all five caller-assigned flags hold: non-lacunar infarct on CT/MRI; no ≥50% stenosis supplying the ischaemia; no major-risk cardioembolic source; no other specific cause; and Panel 3 minimum workup (brain CT/MRI, 12-lead ECG, precordial echo, ≥24 h automated rhythm monitoring (not telemetry), extra- and intracranial arterial imaging). Incomplete workup is not ESUS. Not a stroke diagnosis, not TOAST cryptogenic, not anticoagulation. magent does not read imaging.$0.005 $0.007 Base1313 ms1 payers100% up
  73. 75api.magentlab.com/api/calc/disease_stepsHohol 1995 Disease Steps: caller-assigned integer 0-6 (normal; mild disability, mild symptoms or signs; moderate disability, visible abnormality of gait; early cane, intermittent use of cane; late cane, cane-dependent; bilateral support; confined to wheelchair). Not 0.5 half-steps, not later Disease Steps Plus, and not EDSS. magent does not examine gait. Not a medical device and not an MS diagnosis.$0.005 $0.007 Base1803 ms1 payers100% up
  74. 75api.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 Base1672 ms1 payers100% up
  75. 75api.magentlab.com/api/calc/mg_adlWolfe 1999 myasthenia gravis activities of daily living (MG-ADL) profile: eight caller-assigned integers 0-3 (talking, chewing, swallowing, breathing, brush_comb, arise_chair, double_vision, eyelid_droop), summed 0-24. magent does not examine the patient. Wolfe 1999 correlated MG-ADL with QMG; that is not a conversion. Not QMG, not MGFA class. Score and max_score only; no severity band. Not a medical device.$0.005 $0.007 Base1552 ms1 payers100% up
  76. 75api.magentlab.com/api/calc/mtoq_4Lipton 2015 mTOQ-4 from four caller-assigned frequency items: pain-free within 2 hours, one dose keeps headache away ≥24 hours, comfortable enough to plan daily activities, in control enough to return to normal function. Each never=0, rarely=0, less_than_half=1, half_or_greater=2. Sum 0-8. Bands very_poor 0, poor 1-5, moderate 6-7, maximum 8. magent does not interview the patient. Not a diagnosis, not an abortive-drug order, not the 19-item or 6-item mTOQ.$0.005 $0.007 Base2035 ms1 payers100% up
  77. 75api.magentlab.com/api/calc/alsfrs_rCedarbaum 1999 ALSFRS-R: twelve caller-assigned integers 0-4 (speech, salivation, swallowing, handwriting, cutting_food, dressing_hygiene, turning_in_bed, walking, climbing_stairs, dyspnea, orthopnea, respiratory_insufficiency). One cutting_food slot for with or without gastrostomy. Sum 0-48. magent does not examine. Cedarbaum 1999 printed no total-score severity bands. Not a diagnosis, not original 10-item ALSFRS, not Karnofsky or ECOG, and not a medical device.$0.005 $0.007 Base2111 ms1 payers100% up
  78. 75api.magentlab.com/api/calc/ndiVernon 1991 Neck Disability Index: ten caller-assigned integers 0-5 (pain intensity, personal care, lifting, reading, headaches, concentration, work, driving, sleeping, recreation). Sum 0-50. Vernon 1991 raw-score bands 0-4 none, 5-14 mild, 15-24 moderate, 25-34 severe, >34 complete. Does not apply later 0-8%/10-28% website percentage bands or score Oswestry. magent does not interview. Not a diagnosis and not a medical device.$0.005 $0.007 Base1981 ms1 payers100% up
  79. 75api.magentlab.com/api/calc/barthelMahoney 1965 Barthel Index: ten caller-assigned activity points (feeding, bathing, grooming, dressing, bowels, bladder, toilet, transfers, mobility, stairs) using that paper's 0/5, 0/5/10, or 0/5/10/15 values. magent sums only (max 100 in fives) and does not observe the patient. Not the Collin 0-20 Barthel and not a disability rating or placement decision.$0.005 $0.007 Base2154 ms1 payers100% up
  80. 75api.magentlab.com/api/calc/rest_lgsWolf 2024 REST-LGS: four major criteria (+3 each) and four minor (+1 each). Max 16. likely if score > 11, possible if 8-11, unlikely if < 8. Caller-assigned flags only; magent does not read EEG. Screening, not a diagnosis of Lennox-Gastaut syndrome. Not the 2019 CRF count threshold.$0.005 $0.007 Base2560 ms1 payers100% up
  81. 75api.magentlab.com/api/calc/tdn_gradeTerrapon 2021 Therapy-Disability-Neurology (TDN) grade. Caller assigns therapy t1-t5, modified Rankin 0-6 (6 is death), and new neurologic deficit. Overall grade is max(T, D, N); t5 or mRS 6 is always 5. D maps mRS 0-1→1, 2-3→2, 4→3, 5→4, 6→5; new deficit is N=2 else N=1. Not a diagnosis and not Clavien-Dindo alone. magent does not grade the event.$0.005 $0.007 Base1968 ms1 payers100% up
  82. 75api.magentlab.com/api/calc/modified_rankinModified Rankin handicap grade 0-5 (van Swieten 1988) as assigned by the caller. Returns the published wording (no symptoms at all through severe disability: bedridden, incontinent, constant nursing). This 1988 scale has six grades 0-5 and does not include a dead grade. Not a diagnosis or discharge/disability-benefit protocol; magent does not interview the patient.$0.005 $0.007 Base1030 ms1 payers100% up
  83. 75api.magentlab.com/api/calc/ich_scoreHemphill 2001 ICH Score from caller-assigned GCS, age, infratentorial origin, ICH volume (mL), and IVH; max 6. GCS 3-4 scores 2, 5-12 scores 1, 13-15 scores 0; age ≥80, volume ≥30 mL, infratentorial origin, and IVH score 1 each. Deterministic published score with citation; not a diagnosis or withdrawal-of-care protocol. magent does not read CT. Not FUNC and not ICH-GS.$0.005 $0.007 Base1281 ms1 payers100% up
  84. 75api.magentlab.com/api/calc/ascodAmarenco 2013 ASCOD phenotyping of ischemic stroke from caller-assigned grades. A atherosclerosis, S small-vessel disease, C cardiac pathology, O other causes, D dissection. Each grade is 1 potentially causal, 2 causality uncertain, 3 unlikely causal but disease present, 0 absent, or 9 insufficient workup. Returns A1-S0-C2-O0-D0 style phenotype, not a summed score. magent does not read imaging. Not TOAST. Not CCS. Not a treatment. Not a medical device.$0.005 $0.007 Base1947 ms1 payers100% up
  85. 75api.magentlab.com/api/calc/abcd2ABCD2 (Johnston 2007) early stroke-risk score after TIA from age, blood pressure, caller-assigned clinical features, symptom duration, and diabetes (max 7). Bands 0-3, 4-5, and 6-7. Deterministic published score with citation; not a diagnosis or admit protocol. magent does not examine the patient. Not ABCD (Rothwell 2005) and not ABCD3-I.$0.005 $0.007 Base2088 ms1 payers100% up
  86. 75api.magentlab.com/api/calc/cpsssKatz 2015 Cincinnati Prehospital Stroke Severity Scale (CP-SSS): gaze deviation 2 if present else 0 + abnormal LOC 1 + arm cannot hold 10 s 1. Max 4. severe_stroke_suggested iff score ≥ 2. Not the 3-item CPSS facial/arm/speech screen, not NIHSS, not a tPA decision. magent does not examine the patient.$0.005 $0.007 Base1277 ms1 payers100% up
  87. 75api.magentlab.com/api/calc/fast_edLima 2016 FAST-ED (Field Assessment Stroke Triage for Emergency Destination): facial_palsy 0-1 + arm_weakness 0-2 + speech 0-2 + eye_deviation 0-2 + neglect 0-2. Max 9. lvo_suggested iff score ≥4. Bands 0_to_1 / 2_to_3 / gte_4. Time is documented for decision making (0 points, not scored). Not a stroke diagnosis or transfer order. magent does not examine the patient.$0.005 $0.007 Base1177 ms1 payers100% up
  88. 75api.magentlab.com/api/calc/asdsAcute Stroke Dysphagia Screen (Edmiaston 2010). Pass only when all five hold: GCS ≥13 and no facial, tongue, or palatal asymmetry or weakness, and no 3-ounce water-swallow aspiration signs. Fail-any screen. Caller assigns GCS and the four bedside flags. magent does not examine cranial nerves or administer water. Not a dysphagia diagnosis, not a diet order, and not a medical device.$0.005 $0.007 Base1269 ms1 payers100% up
  89. 75api.magentlab.com/api/calc/pediatric_nihssIchord 2011 Pediatric NIH Stroke Scale (PedNIHSS): 15 caller-assigned NINDS NIHSS integers with left and right motor arm and leg (each 0-4). Visual 0-3. Extinction, not Brott neglect. No pupillary response or plantar reflex. Sum 0-42. magent does not examine the child. No total-score severity bands in Ichord 2011; later 5/15/20 website cutoffs are not applied. Not Brott 1989 15-item NIHSS (max 37), not mNIHSS, not a tPA order, not a diagnosis, and not a medical device.$0.005 $0.007 Base2127 ms1 payers100% up
  90. 75api.magentlab.com/api/calc/mnihssMeyer/Lyden 2001 modified NIH Stroke Scale (mNIHSS): eleven caller-assigned NINDS-style integers. Drops LOC, facial palsy, limb ataxia, and dysarthria; collapses sensory to 0 = normal or 1 = abnormal; keeps left/right motor arm and leg (each 0-4). Sum 0-31. magent does not examine the patient. No total-score severity bands in Meyer 2001; later website cutoffs are not applied. Not Brott 1989 NIHSS, not a tPA order, not a diagnosis, and not a medical device.$0.005 $0.007 Base2021 ms1 payers100% up
  91. 75api.magentlab.com/api/calc/ivt_contraindicationsPowers 2018 Table 6 Class III Harm IVT. contraindicated iff any of 15 caller flags: CT ICH; recent ischemic stroke, severe head trauma, or intracranial/spinal surgery; posttraumatic infarction; history of ICH; SAH presentation; GI malignancy or bleed 21d; coagulopathy; LMWH 24h; DOAC not cleared; GP IIb/IIIa; infective endocarditis; aortic arch dissection; intra-axial neoplasm. Not Class I eligibility, time window, or a dose. magent does not read CT or assay labs. Not a treatment order.$0.005 $0.007 Base1009 ms1 payers100% up
  92. 75api.magentlab.com/api/calc/alteplase_strokeNINDS 1995 IV alteplase milligram arithmetic from weight: total_mg = min(0.9 × weight_kg, 90), 10% bolus, 90% infusion over 60 minutes. Reports milligrams and whether the 90 mg cap applied. Not a medical device, not a prescription, not an eligibility screen, and not tenecteplase.$0.005 $0.007 Base1836 ms1 payers100% up
  93. 75api.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 Base1360 ms1 payers100% up
  94. 75api.magentlab.com/api/calc/nihssBrott 1989 NIH stroke scale: 15 caller-assigned exam integers including pupillary response (0-2) and plantar reflex (0-3), with weaker-limb motor arm (0-4) and motor leg (0-3). Sum 0-37. Not the later NINDS 11-category form, not mNIHSS, and not a tPA order. magent does not examine the patient. No total-score severity bands in Brott 1989; later website cutoffs are not applied. Not a diagnosis and not a medical device.$0.005 $0.007 Base1127 ms1 payers100% up
  95. 75api.magentlab.com/api/calc/sudbury_vertigoOhle 2025 Sudbury vertigo ED score (Table 2): male 1, age>65 flag 1, diabetes 1, hypertension 3, motor or sensory deficit 5, cerebellar signs 6, BPPV -5. Returns score (female+BPPV -5, not clamped), max 17, Table 3 bands lt_5 / 5_to_8 / gt_8 (0.0 / 2.1 / 41.0%), and investigate_further if score >4. Not a medical device, stroke diagnosis, CT order, HINTS, or HINTS-plus. magent does not examine the patient. Age is the age>65 flag, not years.$0.005 $0.007 Base1011 ms1 payers100% up
  96. 75api.magentlab.com/api/calc/hintsKattah 2009 three-step HINTS (Head-Impulse, Nystagmus, Test-of-Skew) for patients already in acute vestibular syndrome (AVS). Three caller-assigned flags: head_impulse_normal, direction_changing_nystagmus, and skew_deviation. dangerous is true if any flag is true (INFARCT: Impulse Normal, Fast-phase Alternating, Refixation on Cover Test). benign iff none. Not HINTS-plus (hearing). Not a stroke diagnosis or a substitute for neuroimaging. magent does not examine the patient.$0.005 $0.007 Base1040 ms1 payers100% up
  97. 75api.magentlab.com/api/calc/gcs_pupilsGCS-Pupils (GCS-P) as caller-assigned total GCS 3-15 minus pupil reactivity score (unreactive pupils 0, 1, or 2) per Brennan 2018. Returns the index only (GCS-P range 1-15). magent does not examine pupils, assign GCS, compute eye/verbal/motor (use /api/calc/gcs), or implement Part 2 probability charts. Not a medical device and not a TBI-severity diagnosis.$0.005 $0.007 Base1349 ms1 payers100% up
  98. 75api.magentlab.com/api/calc/pmpGhanem 2012 Table 5 bedside preoperative mortality predictor. Inpatient 6, sepsis 4, poor functional status (total ADL assistance) 3, disseminated cancer 1, age (≥80 → 2; 70–79 → 1; 65–69 → 0.5; else 0), cardiac 5, pulmonary 3, renal 1, liver 1, chronic steroid 1, >10% weight loss 1, bleeding disorder 1, DNR 1, obesity −1. Range −1 to 30. Figure 3: <1% died in 0–5, 73% in 20–30. Not a go/no-go for surgery.$0.005 $0.007 Base1449 ms1 payers100% up
  99. 75api.magentlab.com/api/calc/asdas_crpvan der Heijde 2009 ASDAS-CRP: 0.12*back pain + 0.06*morning stiffness duration + 0.11*patient global + 0.07*peripheral pain/swelling + 0.58*ln(CRP+1). BASDAI 0-10 items and CRP in mg/L. ASAS selected the CRP version as preferred. magent does not examine the patient or assay CRP. Not ASDAS-ESR. Not BASDAI total. Does not apply Machado 2011 1.3/2.1/3.5 activity cuts. Not a diagnosis or biologic order.$0.005 $0.007 Base1200 ms1 payers100% up
  100. 75api.magentlab.com/api/calc/asas_axial_spaASAS 2009 axial SpA classification (Rudwaleit set 3a / fig 2). Required: chronic back pain ≥3 months and age at onset <45. Imaging arm: MRI or modified New York sacroiliitis plus ≥1 of 11 SpA features. Clinical arm: HLA-B27 plus ≥2 other features (HLA-B27 does not count toward those two). Not a diagnosis. Not peripheral ASAS 2011. Not modified New York AS-only. magent does not read films or assay HLA-B27.$0.005 $0.007 Base1372 ms1 payers100% up