# PE-SARD Score Calculator (Chopard 2021)

> PE-SARD Score Calculator (Chopard 2021) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Computes the PE-SARD score for predicting early major bleeding risk in acute pulmonary embolism patients using three clinical flags: syncope, anemia, and renal dysfunction.

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/pe_sard
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pe-sard-score-calculator-chopard-2021-c43a48f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_72s8sxZQVCCCBVnumudyg

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 pe-sard-score-calculator-chopard-2021-c43a48f0
```

Example prompt: My patient has acute pulmonary embolism, had a syncopal episode, is anemic (hemoglobin under 12), and has renal dysfunction (GFR under 60) — can you calculate the PE-SARD score and tell me what bleeding risk category they fall into?

## When to prefer this

Use this endpoint when you need a fast, standardized computation of the Chopard 2021 PE-SARD score and the caller has already determined the three clinical flags (syncope, anemia, renal dysfunction). Prefer this over manual score calculation to avoid arithmetic errors and to get an explicit risk tier label. This is purely a calculation service — it does not diagnose PE, measure hemoglobin, compute GFR, or recommend anticoagulation doses.

## Known failure modes

- Missing required boolean parameters (syncope, anemia, renal_dysfunction) results in a 400-level error
- Passing non-boolean values for the three flags may cause validation failure
- The service does not independently verify hemoglobin or GFR — incorrect caller-assigned flags yield a valid but clinically wrong score
- Network or payment authorization failures may return 402 or 5xx errors

## How this service works

Chopard 2021 PE-SARD score for early major bleeding in acute pulmonary embolism. Three caller-assigned flags: syncope (1.5), anemia (hemoglobin <12 g/dL, 2.5), renal dysfunction (GFR <60 mL/min, 1). Max 5. Half-points as published. Risk: low (0), intermediate (1–2.5), high (>2.5). magent does not assay hemoglobin or compute GFR. Not a PE diagnosis and not an anticoagulation order. Not a medical device.

## Output

Returns the numeric PE-SARD total score (0 to 5, with half-point increments as published) and the corresponding bleeding risk category: low (score 0), intermediate (score 1–2.5), or high (score >2.5).

## 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": [
      "syncope",
      "anemia",
      "renal_dysfunction"
     ],
     "properties": {
      "anemia": {
       "type": "boolean",
       "description": "Anemia as assigned by the caller (Chopard 2021: hemoglobin <12 g/dL). true scores 2.5. magent does not assay hemoglobin."
      },
      "syncope": {
       "type": "boolean",
       "description": "Syncope as assigned by the caller (Chopard 2021). true scores 1.5. magent does not take a syncope history."
      },
      "renal_dysfunction": {
       "type": "boolean",
       "description": "Renal dysfunction as assigned by the caller (Chopard 2021: GFR <60 mL/min). true scores 1. magent does not compute GFR."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pe-sard-score-calculator-chopard-2021-c43a48f0/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)