{"uid":"cap_9CcT3VpowATGscNUTDPd6","slug":"flacc-pain-scale-calculator-merkel-1997-2662229f","name":"FLACC Pain Scale Calculator (Merkel 1997)","description":"Merkel 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.","url":"https://api.magentlab.com/api/calc/flacc","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["face","legs","activity","cry","consolability"],"properties":{"cry":{"type":"integer","description":"Caller-assigned Merkel 1997 FLACC cry (integer 0-2): 0 no cry (awake or asleep); 1 moans or whimpers, occasional complaint; 2 crying steadily, screams or sobs, frequent complaints. magent does not observe the child."},"face":{"type":"integer","description":"Caller-assigned Merkel 1997 FLACC face (integer 0-2): 0 no particular expression or smile; 1 occasional grimace/frown, withdrawn or disinterested; 2 frequent/constant quivering chin, clenched jaw. magent does not observe the child."},"legs":{"type":"integer","description":"Caller-assigned Merkel 1997 FLACC legs (integer 0-2): 0 normal position or relaxed; 1 uneasy, restless, tense; 2 kicking or legs drawn up. magent does not observe the child."},"activity":{"type":"integer","description":"Caller-assigned Merkel 1997 FLACC activity (integer 0-2): 0 lying quietly, normal position, moves easily; 1 squirming, shifting back and forth, tense; 2 arched, rigid or jerking. magent does not observe the child."},"consolability":{"type":"integer","description":"Caller-assigned Merkel 1997 FLACC consolability (integer 0-2): 0 content and relaxed; 1 reassured by occasional touching, hugging or being talked to, distractible; 2 difficult to console or comfort. magent does not observe the child."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RaBQU2xiqBnZejkmO-zbz","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the Merkel 1997 FLACC pediatric pain score (0–10) by summing five caller-assigned behavioral items: face, legs, activity, cry, and consolability.","exampleAgentPrompt":"Calculate the Merkel 1997 FLACC score for a child where face is 1 (occasional grimace), legs is 2 (kicking), activity is 1 (squirming), cry is 0 (no cry), and consolability is 1 (reassured by touch) — what's the total out of 10?","exampleUseCases":[{"title":"Post-op pediatric pain triage","prompt":"A nurse just assessed a toddler after surgery and noted: face 2 (clenched jaw), legs 2 (drawn up), activity 2 (arched and rigid), cry 2 (crying steadily), consolability 2 (difficult to comfort). What's the FLACC total?"},{"title":"ICU behavioral pain monitoring","prompt":"I'm tracking a sedated child in the ICU — the observed scores are face 0, legs 1 (uneasy/tense), activity 1 (shifting), cry 0, consolability 0 (content). Can you compute the FLACC score?"},{"title":"Emergency department pain documentation","prompt":"The ER nurse scored a 4-year-old as face 1, legs 0, activity 0, cry 1 (occasional whimpering), consolability 1. What does the Merkel FLACC calculator give as the total?"}],"resultDescription":"Returns the summed FLACC total score as an integer between 0 and 10, computed strictly by adding the five caller-provided item scores (face + legs + activity + cry + consolability) per the Merkel 1997 original scale. Does not include pain severity interpretation bands, treatment recommendations, or diagnostic conclusions.","failureModes":["Missing required parameter (face, legs, activity, cry, or consolability) returns a validation error","Value outside 0–2 integer range causes a schema validation failure","Non-integer values (e.g. floats or strings) rejected by input schema","All zeros input returns 0 (valid, not an error — indicates minimal behavioral distress signs)"],"whenToPreferThis":"Use this endpoint when you need a fast, reproducible arithmetic FLACC sum per Merkel 1997 and already have all five behavioral item scores assigned by a clinician or observer. Prefer it over manual addition to reduce transcription errors in documentation workflows. Do not use it as a substitute for clinical observation, pain diagnosis, or analgesic decision-making; it is a calculation aid, not a clinical decision support tool. Not applicable for adult patients (use PAINAD or other adult scales) or when fewer than five FLACC items are available.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:49:49.952Z","isFirstParty":false}