# CAM-ICU Delirium Screener (Ely 2001) > CAM-ICU Delirium Screener (Ely 2001) 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). Applies the CAM-ICU algorithm to four caller-supplied feature flags and returns whether delirium is present or absent. ## Facts - Endpoint: GET https://api.magentlab.com/api/calc/cam_icu - 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/cam-icu-delirium-screener-ely-2001-055f7d77 - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5x8IXYZcQFYAC5e7he_Qv 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 cam-icu-delirium-screener-ely-2001-055f7d77 ``` Example prompt: My ICU patient has an acute onset of mental status change (Feature 1 = true), shows inattention (Feature 2 = true), no disorganized thinking (Feature 3 = false), and a normal level of consciousness (Feature 4 = false) — run the CAM-ICU algorithm and tell me if delirium is present. ## When to prefer this Use this endpoint when you have already assessed and assigned the four CAM-ICU features independently (e.g., via clinical observation, RASS administration, and attention exam) and need to apply the Ely 2001 logical algorithm to produce a positive/negative result. This endpoint does not perform the clinical assessment itself — it only applies the decision logic. Prefer it for automating documentation pipelines, audit trails, or clinical decision-support agents where the feature flags are already determined. ## Known failure modes - Missing required feature flags returns a validation error - Invalid boolean values for any feature parameter cause a bad request - Network timeout if the endpoint is temporarily unavailable ## How this service works CAM-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. ## Output A Boolean or categorical determination of whether the CAM-ICU criteria are met (delirium present or absent), derived from the logical combination: (Feature 1 AND Feature 2) AND (Feature 3 OR Feature 4). ## 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": [ "acute_onset_or_fluctuation", "inattention", "disorganized_thinking", "altered_level_of_consciousness" ], "properties": { "inattention": { "type": "boolean", "description": "Feature 2: inattention. true or false as assigned by the caller. magent does not run the attention screening exam." }, "disorganized_thinking": { "type": "boolean", "description": "Feature 3: disorganized thinking. true or false as assigned by the caller. magent does not administer the thinking questions." }, "acute_onset_or_fluctuation": { "type": "boolean", "description": "Feature 1: acute onset of mental status change or fluctuating course. true or false as assigned by the caller. magent does not observe the patient or judge fluctuation." }, "altered_level_of_consciousness": { "type": "boolean", "description": "Feature 4: altered level of consciousness. true or false as assigned by the caller. magent does not administer RASS." } } } }, "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/cam_icu", "count": 2, "items": [ { "formula": "cam_icu", "citation": { "id": "ely-2001", "doi": "10.1001/jama.286.21.2703", "pmid": "11730446", "title": "Delirium in mechanically ventilated patients: validity and reliability of the confusion assessment method for the intensive care unit (CAM-ICU)", "source": "JAMA. 2001;286(21):2703-2710", "authors": "Ely EW, Inouye SK, Bernard GR, et al." }, "criteria": [ { "met": false, "factor": "acute_onset_or_fluctuation" }, { "met": false, "factor": "inattention" }, { "met": false, "factor": "disorganized_thinking" }, { "met": false, "factor": "altered_level_of_consciousness" } ], "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.", "delirium_present": false, "formula_expression": "delirium present iff Feature 1 AND Feature 2 AND (Feature 3 OR Feature 4)" }, { "formula": "cam_icu", "citation": { "id": "ely-2001", "doi": "10.1001/jama.286.21.2703", "pmid": "11730446", "title": "Delirium in mechanically ventilated patients: validity and reliability of the confusion assessment method for the intensive care unit (CAM-ICU)", "source": "JAMA. 2001;286(21):2703-2710", "authors": "Ely EW, Inouye SK, Bernard GR, et al." }, "criteria": [ { "met": false, "factor": "acute_onset_or_fluctuation" }, { "met": false, "factor": "inattention" }, { "met": false, "factor": "disorganized_thinking" }, { "met": false, "factor": "altered_level_of_consciousness" } ], "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.", "delirium_present": false, "formula_expression": "delirium present iff Feature 1 AND Feature 2 AND (Feature 3 OR Feature 4)" } ] } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cam-icu-delirium-screener-ely-2001-055f7d77/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)