# Magent AIR Score Calculator > Magent AIR Score Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15). Calculates the Andersson 2008 Appendicitis Inflammatory Response (AIR) score (0–12) from clinical and lab inputs to risk-stratify suspected appendicitis ## Facts - Endpoint: GET https://api.magentlab.com/api/calc/air - Price: $0.005/call - Payment: x402 - Status: unknown - Last checked: 2026-09-15 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/magent-air-score-calculator-8191cf3d - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Y5QttryWQ5FgqwMTgmPif Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability magent-air-score-calculator-8191cf3d ``` Example prompt: Calculate the AIR score for a patient who has vomiting, right iliac fossa pain, medium rebound tenderness, temperature of 38.7°C, WBC of 13.2 ×10³/µL, neutrophil percent of 78%, and CRP of 42 mg/L. ## When to prefer this Use this endpoint when you need a deterministic, citable implementation of the Andersson 2008 AIR score specifically — not a generic appendicitis risk heuristic. Prefer it over manual calculation to avoid arithmetic error and to get structured band classification. It is not a substitute for clinical examination or imaging, and the caller must supply the rebound/guarding severity since this service cannot examine the patient. ## Known failure modes - Missing required parameters (vomiting, rif_pain, rebound_or_guarding, temperature_c, neutrophil_percent, crp_mg_l) returns a validation error - Neither wbc_k_ul nor wbc_ul provided may cause an error or default scoring - Temperature out of range (30–45°C) rejected as invalid - CRP value provided in mg/dL instead of mg/L produces incorrect score silently - neutrophil_percent or crp_mg_l outside valid ranges (0–100, 0–500) may be rejected - Payment failure (x402) if insufficient USDC balance ## How this service works Andersson 2008 appendicitis inflammatory response (AIR) score from caller-assigned vomiting, right-iliac-fossa pain, rebound or guarding (none/light/medium/strong), temperature, WBC, neutrophil percent, and CRP in mg/L (max 12). Bands 0-4, 5-8, and 9-12. Deterministic published score with citation; not a diagnosis or operating-room protocol. magent does not examine the abdomen. ## Output Returns the total AIR score (integer 0–12), the risk band it falls into (low 0–4, intermediate 5–8, high 9–12), and a citation to the Andersson 2008 publication. Does not provide a diagnosis or surgical recommendation. ## Request schema (JSON Schema) ```json { "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": [ "vomiting", "rif_pain", "rebound_or_guarding", "temperature_c", "neutrophil_percent", "crp_mg_l" ], "properties": { "wbc_ul": { "type": "number", "description": "WBC in cells/µL (same as cells/mm^3). Provide wbc_k_ul or wbc_ul. Range 10-500000. Converted to ×10^9/L (= wbc_ul/1000): <10 scores 0; 10.0-14.9 scores 1; ≥15.0 scores 2." }, "crp_mg_l": { "type": "number", "description": "C-reactive protein in mg/L (0-500), not mg/dL. <10 scores 0; 10-49 scores 1; ≥50 scores 2 (9.9 does not; 10 and 49 score 1; 50 scores 2)." }, "rif_pain": { "type": "boolean", "description": "Pain in the right iliac fossa / right lower quadrant (Andersson 2008). true scores 1; false scores 0." }, "vomiting": { "type": "boolean", "description": "Vomiting (Andersson 2008). true scores 1; false scores 0." }, "wbc_k_ul": { "type": "number", "description": "WBC in 10^3/µL (same as 10^9/L). Provide wbc_k_ul or wbc_ul. Range 0.01-500. Converted to ×10^9/L: <10 scores 0; 10.0-14.9 scores 1; ≥15.0 scores 2." }, "temperature_c": { "type": "number", "description": "Temperature in °C (30.0-45.0). ≥38.5 scores 1 (38.5 scores; 38.49 does not)." }, "neutrophil_percent": { "type": "number", "description": "Neutrophil percent (0-100). <70 scores 0; 70-84 scores 1; ≥85 scores 2 (69.9 does not; 70 and 84 score 1; 85 scores 2)." }, "rebound_or_guarding": { "enum": [ "none", "light", "medium", "strong" ], "type": "string", "description": "Caller-assigned rebound tenderness or muscular guarding (Andersson 2008). none scores 0; light 1; medium 2; strong 3. magent does not examine the abdomen." } } } }, "additionalProperties": fals … (truncated) ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "path": "/api/calc/air", "count": 2, "items": [ { "score": 0, "wbc_ul": 8000, "formula": "air", "air_band": "0-4", "citation": { "id": "andersson-2008", "doi": "10.1007/s00268-008-9649-y", "pmid": "18553045", "title": "The appendicitis inflammatory response score: a tool for the diagnosis of acute appendicitis that outperforms the Alvarado score", "source": "World J Surg. 2008;32(8):1843-1849", "authors": "Andersson M, Andersson RE" }, "crp_mg_l": 5, "rif_pain": false, "vomiting": false, "max_score": 12, "components": [ { "factor": "vomiting", "points": 0, "present": false }, { "factor": "rif_pain", "points": 0, "present": false }, { "value": "none", "factor": "rebound_or_guarding", "points": 0, "present": false }, { "value": 37, "factor": "temperature_c", "points": 0, "present": false }, { "value": 8000, "factor": "wbc", "points": 0, "present": false }, { "value": 60, "factor": "neutrophil_percent", "points": 0, "present": false }, { "value": 5, "factor": "crp_mg_l", "points": 0, "present": false } ], "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.", "wbc_10e9_l": 8, "temperature_c": 37, "formula_expression": "AIR = vomiting + rif_pain + rebound_or_guarding (none 0, light 1, medium 2, strong 3) + (temperature_c >= 38.5) + WBC 10^9/L (<10 → 0; 10.0–14.9 → 1; ≥15.0 → 2) + neutrophil_percent (<70 → 0; 70–84 → 1; ≥85 → 2) + crp_mg_l (<10 → 0; 10–49 → 1; ≥50 → 2); max 12; bands 0-4 / 5-8 / 9-12", "neutrophil_percent": 60, "rebound_or_guarding": "none" }, { "score": 0, "wbc_ul": 8000, "formula": "air", "air_band": "0-4", "citation": { "id": "andersson-2008", "doi": "10.1007/s00268-008-9649-y", "pmid": "18553045", "title": "The appendicitis inflammatory response score: a tool for the diagnosis of acute appendicitis that outperforms the Alvarado score", "source": "World J Surg. 2008;32(8):1843-1849", "authors": "Andersson M, Andersson RE" }, "crp_mg_l": 5, "rif_pain": false, "vomi … (truncated) ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/magent-air-score-calculator-8191cf3d/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.magentlab.com](https://www.zero.xyz/host/api.magentlab.com/llms.txt)