# Plate Weight & Material Cost Calculator

> Plate Weight & Material Cost Calculator is a paid API for AI agents from x402.bakdupoffroad.com, paid per call via x402, $0.001/call, status down (last checked 2026-09-16).

Computes the unit and total weight of a flat metal plate (mild steel, stainless 304, or aluminum 6061) given dimensions and quantity, and optionally estimates material cost.

## Facts

- Endpoint: GET https://x402.bakdupoffroad.com/v1/fabrication/plate-weight
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/plate-weight-material-cost-calculator-a3225fa0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xrg_r6wHue-n5NSUv5i4W

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 plate-weight-material-cost-calculator-a3225fa0
```

Example prompt: What's the weight of a mild-steel plate that's 24 inches long, 12 inches wide, and 0.25 inches thick — I need 10 of them, and the steel costs $0.85 per pound?

## When to prefer this

Choose this endpoint when you need a fast, deterministic, per-call weight and cost estimate for standard flat metal plate stock (mild steel, stainless 304, or aluminum 6061) and want a pay-per-use model with no subscription. It is ideal for fabrication quoting agents, procurement workflows, or shipping weight calculators that handle these three common alloys. Prefer alternatives if you need complex geometry (non-flat stock, cut shapes), alloys beyond the three supported, or structural/FEA-grade calculations.

## Known failure modes

- Missing required dimension or material parameter returns a validation error
- Dimensions or quantity outside allowed ranges (e.g. thickness > 10 in, quantity > 10000) are rejected
- Unsupported material string (anything other than mild-steel, stainless-304, aluminum-6061) returns an enum validation error
- Payment failure or insufficient USDC balance returns an x402 payment-required error
- pricePerLb omitted results in estimatedMaterialCostUsd being null rather than an error

## How this service works

Private PDF preflight and authorized-video intelligence APIs paid per call with x402 USDC on Base.

## Output

Returns a JSON object with a jobId, the echoed inputs, the material's nominal density in lb/cubic inch, the per-unit weight in pounds, the total weight across all units in pounds, the estimated material cost in USD (null if pricePerLb not provided), a schema version, a source SHA-256 hash, and a limitations array noting that results are nominal density estimates subject to alloy and mill tolerance variance.

## 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",
     "properties": {
      "widthIn": {
       "type": "number",
       "maximum": 1000,
       "exclusiveMinimum": 0
      },
      "lengthIn": {
       "type": "number",
       "maximum": 1000,
       "exclusiveMinimum": 0
      },
      "material": {
       "enum": [
        "mild-steel",
        "stainless-304",
        "aluminum-6061"
       ],
       "type": "string"
      },
      "quantity": {
       "type": "integer",
       "maximum": 10000,
       "minimum": 1
      },
      "pricePerLb": {
       "type": "number",
       "maximum": 10000,
       "minimum": 0
      },
      "thicknessIn": {
       "type": "number",
       "maximum": 10,
       "exclusiveMinimum": 0
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "jobId",
      "result",
      "economics"
     ],
     "properties": {
      "jobId": {
       "type": "string"
      },
      "result": {
       "type": "object",
       "required": [
        "schemaVersion",
        "sourceSha256",
        "inputs",
        "densityLbPerCubicIn",
        "unitWeightLb",
        "totalWeightLb",
        "estimatedMaterialCostUsd",
        "limitations"
       ],
       "properties": {
        "inputs": {
         "type": "object"
        },
        "limitations": {
         "type": "array",
         "items": {
          "type": "string"
         }
        },
        "sourceSha256": {
         "type": "string",
         "pattern": "^[a-f0-9]{64}$"
        },
        "unitWeightLb": {
         "type": "number"
        },
        "schemaVersion": {
         "type": "string",
         "const": "1"
        },
        "totalWeightLb": {
         "type": "number"
        },
        "densityLbPerCubicIn": {
         "type": "number"
        },
        "estimatedMaterialCostUsd": {
         "type": [
          "number",
          "null"
         ]
        }

… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "jobId": "00000000-0000-4000-8000-000000000000",
  "result": {
   "inputs": {
    "widthIn": 12,
    "lengthIn": 12,
    "material": "mild-steel",
    "quantity": 1,
    "pricePerLb": null,
    "thicknessIn": 0.25
   },
   "limitations": [
    "Nominal density estimate only; actual alloy, coating, and mill tolerances vary."
   ],
   "sourceSha256": "0000000000000000000000000000000000000000000000000000000000000000",
   "unitWeightLb": 10.2096,
   "schemaVersion": "1",
   "totalWeightLb": 10.2096,
   "densityLbPerCubicIn": 0.2836,
   "estimatedMaterialCostUsd": null
  },
  "economics": {
   "netMicroUsd": 1000,
   "energyMicroUsd": 0,
   "revenueMicroUsd": 1000,
   "platformFeeMicroUsd": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/plate-weight-material-cost-calculator-a3225fa0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.bakdupoffroad.com](https://www.zero.xyz/host/x402.bakdupoffroad.com/llms.txt)