# Farm & Garden Calc – Grazing Stocking Rate Calculator

> Farm & Garden Calc – Grazing Stocking Rate Calculator is a paid API for AI agents from agri-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Calculates grazing carrying capacity in animal unit months (AUM) from pasture acres, forage yield, utilization percent, and grazing days, with an optional herd size check.

## Facts

- Endpoint: GET https://agri-calc.x402tookit.com/stocking-rate?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/farm-garden-calc-grazing-stocking-rate-calculator-b51a4b21
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C8bMhfKEZT6Dm9qcgekk8

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 farm-garden-calc-grazing-stocking-rate-calculator-b51a4b21
```

Example prompt: I have 320 acres of pasture producing about 2,400 lb of forage dry matter per acre, with a 50% utilization rate and a 150-day grazing season — how many animal unit months does that support, and can it carry 85 head of 1,000 lb cattle?

## When to prefer this

Choose this endpoint when you need a fast, serverless computation of grazing carrying capacity from basic pasture and forage data without requiring GIS data, soil surveys, or lab results. It is ideal for quick pre-season planning, lease negotiations, or agent-driven farm management workflows that need AUM and stocking-rate numbers on demand. Prefer a full range management software suite if you need multi-paddock rotational schedules or GPS-mapped forage sampling.

## Known failure modes

- Missing required parameters (acres, forageLbDmPerAcre, grazingDays) returns a 400-level error
- Zero or negative values for acres or forage yield produce meaningless or error results
- Extremely high utilization percentages (>100) may produce unrealistic estimates
- Network or payment authentication failure returns a 402 or 5xx response

## How this service works

Grazing carrying capacity in animal unit months from acres, forage yield, use percent and days, with an optional herd check.

## Output

Returns animal unit months (AUM) supported by the pasture, head count that can be grazed (whole and fractional), usable forage in lb dry matter, grazing months, acres needed to support the specified herd, load ratio, and — if a head count was provided — a verdict on whether the herd is within capacity along with supporting reasons and a plain-language summary.

## 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": [
      "acres",
      "forageLbDmPerAcre",
      "grazingDays"
     ],
     "properties": {
      "acres": {
       "type": "number",
       "description": "Pasture acres"
      },
      "animals": {
       "type": "number",
       "description": "Your head count, to check against capacity"
      },
      "lbDmPerAum": {
       "type": "number",
       "description": "Forage dry matter per animal unit month (default 780 = 26 lb x 30 days)"
      },
      "grazingDays": {
       "type": "number",
       "description": "Days of grazing in the season"
      },
      "animalWeightLb": {
       "type": "number",
       "description": "Average animal live weight in lb (default 1000 = one animal unit)"
      },
      "utilizationPct": {
       "type": "number",
       "description": "Percent of forage that may be grazed, leaving the rest (default 50)"
      },
      "forageLbDmPerAcre": {
       "type": "number",
       "description": "Forage dry matter produced per acre over the season, lb"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "animals": {
       "type": [
        "null",
        "number"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "loadRatio": {
       "type": [
        "null",
        "number"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
     
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/farm-garden-calc-grazing-stocking-rate-calculator-b51a4b21/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agri-calc.x402tookit.com](https://www.zero.xyz/host/agri-calc.x402tookit.com/llms.txt)