# Parkland Formula Burn Fluid Calculator

> Parkland Formula Burn Fluid 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 Parkland formula crystalloid resuscitation volume for adult burn patients (4 mL × kg × %TBSA for 24 hours, with half given in the first 8 hours from time of injury), per Baxter 1974.

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/parkland
- 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/parkland-formula-burn-fluid-calculator-78e17a2e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RG6revdR-eHjB58S0OsNG

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 parkland-formula-burn-fluid-calculator-78e17a2e
```

Example prompt: Use the Parkland formula to calculate the 24-hour IV fluid resuscitation volume for an 80 kg adult with 35% TBSA burns — how much goes in the first 8 hours and how much in the remaining 16?

## When to prefer this

Use this endpoint when you need a fast, deterministic, citable Parkland formula calculation for adult burn resuscitation volume. Prefer it over manual arithmetic when accuracy and citation traceability (Baxter 1974) matter. Accepts weight in either kilograms or pounds, making it flexible for clinical workflows. Not intended for pediatric-specific formulas (e.g., Galveston) or real-time titration guidance.

## Known failure modes

- Missing required tbsa_percent parameter returns validation error
- tbsa_percent of 0 is explicitly invalid and rejected
- Negative or out-of-range weight values may return error or unexpected results
- Neither weight_kg nor weight_lb provided results in missing input error
- Non-numeric query parameter values cause schema validation failure

## How this service works

Adult Parkland crystalloid volume: 4 mL × kg × %TBSA for 24 hours, half in the first 8 hours from the time of injury. Baxter 1974. Deterministic published arithmetic with citation; not a treatment order, IV prescription, or urine-output titration.

## Output

Returns the computed total 24-hour crystalloid volume in mL, the first 8-hour aliquot, and the second 16-hour aliquot, based on the deterministic Parkland formula (4 mL × weight in kg × %TBSA), with citation to Baxter 1974. Result is a reference calculation only, not a treatment order.

## 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": [
      "tbsa_percent"
     ],
     "properties": {
      "weight_kg": {
       "type": "number",
       "description": "Weight in kilograms. Provide weight_kg or weight_lb."
      },
      "weight_lb": {
       "type": "number",
       "description": "Weight in pounds. Converted as kg = lb * 0.45359237."
      },
      "tbsa_percent": {
       "type": "number",
       "description": "Percent total body surface area burned (1-100). 0 is invalid."
      }
     }
    }
   },
   "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/parkland",
  "count": 2,
  "items": [
   {
    "formula": "parkland",
    "citation": {
     "id": "baxter-1974",
     "doi": "10.1016/S0094-1298(20)30126-7",
     "title": "Fluid volume and electrolyte changes of the early postburn period",
     "source": "Clin Plast Surg. 1974;1(4):693-703",
     "authors": "Baxter CR"
    },
    "weight_kg": 70,
    "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.",
    "first_8h_ml": 7000,
    "tbsa_percent": 50,
    "volume_24h_ml": 14000,
    "remaining_16h_ml": 7000,
    "formula_expression": "volume_24h_ml = 4 * weight_kg * tbsa_percent; first_8h_ml = volume_24h_ml / 2; remaining_16h_ml = volume_24h_ml / 2"
   },
   {
    "formula": "parkland",
    "citation": {
     "id": "baxter-1974",
     "doi": "10.1016/S0094-1298(20)30126-7",
     "title": "Fluid volume and electrolyte changes of the early postburn period",
     "source": "Clin Plast Surg. 1974;1(4):693-703",
     "authors": "Baxter CR"
    },
    "weight_kg": 70,
    "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.",
    "first_8h_ml": 7000,
    "tbsa_percent": 50,
    "volume_24h_ml": 14000,
    "remaining_16h_ml": 7000,
    "formula_expression": "volume_24h_ml = 4 * weight_kg * tbsa_percent; first_8h_ml = volume_24h_ml / 2; remaining_16h_ml = volume_24h_ml / 2"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/parkland-formula-burn-fluid-calculator-78e17a2e/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)