Tool detail

WebberSites x402 Data API

Evaluates a math expression at 50-significant-digit precision and returns the exact result as a string.

Categories: Utilities

Use when

compute a large-integer or high-precision arithmetic result exactly
convert units or evaluate roots/logs/factorials precisely

Not for

not for executing arbitrary code — the expression is parsed as math only, never executed

Inputs

GET query param: expr (string, required, max 400 chars, e.g. '2^128' or '12 inch to cm')

Admitted input schema

{
  "type": "object",
  "properties": {
    "expr": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Math expression, max 400 chars — e.g. '2^128', 'sqrt(2)', '12 inch to cm'"
    }
  },
  "required": [
    "expr"
  ],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://api.webbersites.com/api/calc

Payment

Protocol: x402
Listed price: 0.001 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://api.webbersites.com/api/calc
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z