agent402.tools Arithmetic Expression Calculator

x402

agent402.tools Arithmetic Expression Calculator is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Safely evaluates an arithmetic expression string (supporting +, -, *, /, %, ^, and parentheses) using a real parser — no code execution or eval.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Safely evaluate an arithmetic expression (+ - * / % ^ and parentheses). No code execution - a real parser, not eval.

Output

A numeric value representing the result of the evaluated arithmetic expression.

Example use cases

Example prompt

“What is (3 + 5) * 12 / (2 ^ 3) - 7 % 4? Can you evaluate that arithmetic expression for me?”

Technical details

Endpoint

POSThttps://agent402.tools/api/calc

When to prefer

Prefer this endpoint when you need safe, sandboxed arithmetic evaluation without executing arbitrary code — especially when the expression comes from untrusted or user-supplied input. Ideal for agents that need to compute math formulas, handle operator precedence correctly, and avoid the security risks of eval-based approaches.

Side effects

Invalid or malformed expression returns an error (e.g. unmatched parentheses, unsupported operators)
Division by zero raises an error
Empty expression string returns an error
Non-arithmetic input (e.g. letters, function calls) rejected
Payment failure (402) if USDC not provided or insufficient

Input

Schema · Request body

Field	Type	Description
expr	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": 29
  }
}

Reviews

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Zero review prompt (fires after every successful call)

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Technical details

Endpoint

POSThttps://agent402.tools/api/calc

When to prefer

Side effects

Invalid or malformed expression returns an error (e.g. unmatched parentheses, unsupported operators)
Division by zero raises an error
Empty expression string returns an error
Non-arithmetic input (e.g. letters, function calls) rejected
Payment failure (402) if USDC not provided or insufficient

Input

Schema · Request body

Field	Type	Description
expr	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": 29
  }
}