# Modified Rankin Scale (mRS) Grade Lookup > Modified Rankin Scale (mRS) Grade Lookup 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). Returns the published van Swieten 1988 wording for a caller-supplied Modified Rankin Scale grade 0–5 ## Facts - Endpoint: GET https://api.magentlab.com/api/calc/modified_rankin - 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/modified-rankin-scale-mrs-grade-lookup-7e5258a9 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Uh1r_tqp7RCUFhoj3ixxF 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 modified-rankin-scale-mrs-grade-lookup-7e5258a9 ``` Example prompt: What is the official published description for Modified Rankin Scale grade 3 according to van Swieten 1988? ## When to prefer this Use this endpoint when you need the canonical published wording of a van Swieten 1988 Modified Rankin Scale grade (0–5) — for example when documenting clinical scores in structured reports, displaying human-readable descriptions alongside numeric mRS values, or verifying that the correct official description is paired with a score. Prefer this over manually hardcoding grade descriptions to ensure accuracy and traceability to the published source. Note this is the six-grade 1988 scale (0–5) and does not include a grade 6 (dead) as found in some later variants. ## Known failure modes - Invalid mrs value (not an integer 0–5) results in an error response - Missing required query parameter mrs returns a validation error - Grades outside 0–5 (e.g. grade 6 dead, used in other mRS variants) are not supported by this 1988 scale endpoint ## How this service works Modified 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. ## Output The endpoint returns the published van Swieten 1988 wording for the requested Modified Rankin Scale grade (e.g. grade 0: 'no symptoms at all'; grade 5: 'severe disability: bedridden, incontinent, constant nursing'). This is a reference text lookup; the endpoint does not perform clinical assessment or generate diagnoses. ## 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": [ "mrs" ], "properties": { "mrs": { "type": "integer", "description": "van Swieten 1988 modified Rankin handicap grade 0-5 as assigned by the caller (0 no symptoms at all; 1 no significant disability despite symptoms; 2 slight disability; 3 moderate disability, walks unaided; 4 moderately severe, unable to walk unaided; 5 severe, bedridden, incontinent, constant nursing). magent does not interview the patient." } } } }, "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/modified_rankin", "count": 2, "items": [ { "mrs": 0, "grade": "No symptoms at all", "score": 0, "formula": "modified_rankin", "citation": { "id": "van-swieten-1988", "doi": "10.1161/01.STR.19.5.604", "pmid": "3363593", "title": "Interobserver agreement for the assessment of handicap in stroke patients", "source": "Stroke. 1988;19(5):604-607", "authors": "van Swieten JC, Koudstaal PJ, Visser MC, Schouten HJ, van Gijn J" }, "max_score": 5, "components": [ { "factor": "mrs", "points": 0, "present": true } ], "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.", "formula_expression": "modified Rankin 0-5 as assigned by the caller; van Swieten 1988 six grades (no dead grade)" }, { "mrs": 0, "grade": "No symptoms at all", "score": 0, "formula": "modified_rankin", "citation": { "id": "van-swieten-1988", "doi": "10.1161/01.STR.19.5.604", "pmid": "3363593", "title": "Interobserver agreement for the assessment of handicap in stroke patients", "source": "Stroke. 1988;19(5):604-607", "authors": "van Swieten JC, Koudstaal PJ, Visser MC, Schouten HJ, van Gijn J" }, "max_score": 5, "components": [ { "factor": "mrs", "points": 0, "present": true } ], "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.", "formula_expression": "modified Rankin 0-5 as assigned by the caller; van Swieten 1988 six grades (no dead grade)" } ] } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/modified-rankin-scale-mrs-grade-lookup-7e5258a9/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)