# x402 Utils – High-Precision Math Expression Evaluator

> x402 Utils – High-Precision Math Expression Evaluator is a paid API for AI agents from qcb7fnxsbd7fbhj4.68r.lambda-web.us-east-1.on.aws, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-30).

Evaluates arithmetic expressions with 64 significant digits of precision, supporting operators, functions (trig, logs, roots), constants, units, percentages, and basic statistics

## Facts

- Endpoint: GET https://qcb7fnxsbd7fbhj4.68r.lambda-web.us-east-1.on.aws/v1/math?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-utils-high-precision-math-expression-evaluator-72874153
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r_buYI2nZaD9-ckOhzPXk

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 x402-utils-high-precision-math-expression-evaluator-72874153
```

Example prompt: Can you calculate sqrt(2) * 10^20 with full precision — I need the result to avoid any floating point rounding issues?

## When to prefer this

Choose this endpoint when you need exact numeric computation without floating-point rounding errors, especially for financial calculations, scientific formulas, unit conversions, or any expression where standard double-precision arithmetic is insufficient. Prefer it over general-purpose code execution for safe, sandboxed math evaluation with built-in support for units and scientific functions.

## Known failure modes

- Expression exceeds 500 character limit — returns an error
- Invalid or unparseable expression syntax — returns parse error
- Unsupported function or operator — returns an error message
- Division by zero — returns an error
- Unsupported unit combination — returns an error

## How this service works

Evaluate an arithmetic expression with 64 significant digits (no floating point surprises): operators, parentheses, powers, roots, logs, trigonometry, percentages, constants, units (5 inch to cm) and simple statistics.

## Output

Returns a JSON object containing the original expression string, the result type (e.g. 'number'), and the computed numeric result with up to 64 significant digits of precision.

## 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": [
      "expr"
     ],
     "properties": {
      "expr": {
       "type": "string",
       "description": "the expression, such as 0.1 + 0.2 or sqrt(2) * 10^20 (up to 500 characters)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "expr": {},
      "type": {},
      "number": {},
      "result": {}
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-utils-high-precision-math-expression-evaluator-72874153/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from qcb7fnxsbd7fbhj4.68r.lambda-web.us-east-1.on.aws](https://www.zero.xyz/host/qcb7fnxsbd7fbhj4.68r.lambda-web.us-east-1.on.aws/llms.txt)