# Pet Care Calc – Ideal Weight from Body Condition Score

> Pet Care Calc – Ideal Weight from Body Condition Score is a paid API for AI agents from pet-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Estimates a dog's or cat's ideal weight from their current weight and a 1-9 body condition score, calculating how much weight to lose and a timeline for safe loss.

## Facts

- Endpoint: GET https://pet-calc.x402tookit.com/ideal-weight-bcs?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pet-care-calc-ideal-weight-from-body-condition-score-8a3df7ff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MbdMjSkrVT4QWDrKEI8UN

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 pet-care-calc-ideal-weight-from-body-condition-score-8a3df7ff
```

Example prompt: My dog currently weighs 42 lb and her vet gave her a body condition score of 7 out of 9 — can you calculate her ideal weight and tell me how much she needs to lose?

## When to prefer this

Use this endpoint when you have a pet's current body weight and a BCS score from a vet or standardized chart and want a quick, formula-based ideal weight estimate. It is purpose-built for dogs and cats using the standard 10%-per-BCS-point-above-5 method, making it more specific than a generic BMI or human weight calculator.

## Known failure modes

- Missing required query params (weight or bodyConditionScore) returns an error
- bodyConditionScore outside 1-9 range may return a validation error or unexpected results
- BCS of 4-5 (already ideal) returns zero weight to lose
- Non-numeric weight values cause a schema validation failure
- Unit values other than 'kg' or 'lb' may default to kg or return an error

## How this service works

Estimate a dog's or cat's ideal weight from current weight and a 1-9 body condition score (10% per point above 5).

## Output

Returns the pet's ideal weight in both kg and lb, current weight in both units, kg to lose, estimated percent over ideal, estimated weeks to reach ideal weight at 1% loss per week, a plain-language summary and verdict, and a veterinary disclaimer. Also includes a timestamp and source field.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "weight",
      "bodyConditionScore"
     ],
     "properties": {
      "unit": {
       "type": "string",
       "description": "kg (default) or lb"
      },
      "weight": {
       "type": "number",
       "description": "Current body weight"
      },
      "bodyConditionScore": {
       "type": "integer",
       "description": "9-point body condition score from your vet or a BCS chart: 1 emaciated, 4 to 5 ideal, 9 obese"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "idealKg": {
       "type": [
        "null",
        "number"
       ]
      },
      "idealLb": {
       "type": [
        "null",
        "number"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "kgToLose": {
       "type": [
        "null",
        "number"
       ]
      },
      "currentKg": {
       "type": [
        "null",
        "number"
       ]
      },
      "currentLb": {
       "type": [
        "null",
        "number"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "bodyConditionScore": {
       "type": [
        "null",
        "number"
       ]
      },
      "weeksAtOnePercentPerWee
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pet-care-calc-ideal-weight-from-body-condition-score-8a3df7ff/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pet-calc.x402tookit.com](https://www.zero.xyz/host/pet-calc.x402tookit.com/llms.txt)