# NAFLD Fibrosis Score Calculator (Angulo 2007) > NAFLD Fibrosis Score Calculator (Angulo 2007) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12). Computes the Angulo 2007 NAFLD fibrosis score from age, BMI, IFG/diabetes status, AST, ALT, platelets, and albumin to estimate likelihood of advanced hepatic fibrosis. ## Facts - Endpoint: GET https://api.magentlab.com/api/calc/nafld_fibrosis?utm_source=zero.xyz - Price: $0.005/call - Payment: x402 - Status: unknown - Last checked: 2026-10-12 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/nafld-fibrosis-score-calculator-angulo-2007-5150a883 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7IiidAxNtO8lHTXbTwrGt 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 nafld-fibrosis-score-calculator-angulo-2007-5150a883 ``` Example prompt: Run the Angulo 2007 NAFLD fibrosis score for a 54-year-old patient with BMI 31.2, diabetes, AST 58 U/L, ALT 72 U/L, platelets 180 ×10⁹/L, and albumin 4.1 g/dL. ## When to prefer this Use this endpoint when you need the specific Angulo 2007 NAFLD fibrosis score (NFS) — distinct from FIB-4, APRI, or BARD score. Prefer this when clinical workflows or guidelines reference NFS by name, or when you need the published seven-variable formula with albumin. Choose APRI endpoint on the same platform if only AST and platelets are available. ## Known failure modes - Missing required parameter (age, BMI, IFG/diabetes, AST, ALT, platelets) returns 400 error - Albumin provided in both g/dL and g/L simultaneously returns validation error - Values outside physiological ranges (e.g., BMI <10 or >80, age <18) are rejected - Payment not included or invalid x402 header results in 402 Payment Required - Network timeout returns no result; retry is safe as endpoint is idempotent ## How this service works Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402. ## Output Returns the calculated Angulo 2007 NAFLD fibrosis score (NFS) as a numeric value, along with an interpretive category (e.g., low/indeterminate/high probability of advanced fibrosis) based on published cut-points, plus citation metadata. No diagnosis is rendered. ## 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": [ "age", "bmi_kg_m2", "ifg_or_diabetes", "ast_u_l", "alt_u_l", "platelets_10e9_l" ], "properties": { "age": { "type": "integer", "description": "Age in years (18-120)." }, "alt_u_l": { "type": "number", "description": "Alanine aminotransferase in U/L (1-10000)." }, "ast_u_l": { "type": "number", "description": "Aspartate aminotransferase in U/L (1-10000)." }, "bmi_kg_m2": { "type": "number", "description": "Body-mass index in kg/m^2 (10-80). Caller-supplied; magent does not compute BMI." }, "albumin_g_l": { "type": "number", "description": "Albumin in g/L (10-60). Converted as g/dL = g/L / 10." }, "albumin_g_dl": { "type": "number", "description": "Albumin in g/dL (1-6). Provide albumin_g_dl or albumin_g_l, not both." }, "ifg_or_diabetes": { "type": "boolean", "description": "Impaired fasting glucose or diabetes as assigned by the caller (Angulo 2007 IFG/diabetes term). true or false." }, "platelets_10e9_l": { "type": "number", "description": "Platelet count in 10^9/L (1-2000)." } } } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object" } } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "path": "/api/calc/nafld_fibrosis", "count": 2, "items": [ { "nfs": -0.125, "alt_u_l": 40, "ast_u_l": 40, "formula": "nafld_fibrosis", "citation": { "id": "angulo-2007", "doi": "10.1002/hep.21496", "title": "The NAFLD fibrosis score: a noninvasive system that identifies liver fibrosis in patients with NAFLD", "source": "Hepatology. 2007;45(4):846-854", "authors": "Angulo P, Hui JM, Marchesini G, et al." }, "age_years": 50, "bmi_kg_m2": 30, "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.", "angulo_band": "indeterminate", "albumin_g_dl": 4, "ast_alt_ratio": 1, "ifg_or_diabetes": true, "platelets_10e9_l": 200, "formula_expression": "NFS = -1.675 + 0.037*age + 0.094*BMI + 1.13*IFG/diabetes + 0.99*(AST/ALT) - 0.013*platelets - 0.66*albumin" }, { "nfs": -0.125, "alt_u_l": 40, "ast_u_l": 40, "formula": "nafld_fibrosis", "citation": { "id": "angulo-2007", "doi": "10.1002/hep.21496", "title": "The NAFLD fibrosis score: a noninvasive system that identifies liver fibrosis in patients with NAFLD", "source": "Hepatology. 2007;45(4):846-854", "authors": "Angulo P, Hui JM, Marchesini G, et al." }, "age_years": 50, "bmi_kg_m2": 30, "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.", "angulo_band": "indeterminate", "albumin_g_dl": 4, "ast_alt_ratio": 1, "ifg_or_diabetes": true, "platelets_10e9_l": 200, "formula_expression": "NFS = -1.675 + 0.037*age + 0.094*BMI + 1.13*IFG/diabetes + 0.99*(AST/ALT) - 0.013*platelets - 0.66*albumin" } ] } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nafld-fibrosis-score-calculator-angulo-2007-5150a883/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)