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agent402.tools Modular Arithmetic
x402
agent402.tools Modular Arithmetic 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).
Performs modular arithmetic operations (mod, modpow, modinverse) using arbitrary-precision BigInt arithmetic for cryptography and number theory applications.
Price / call$0.001
Success—
StatusUnknown
How this service works
Modular arithmetic operations: mod (a mod m), modpow (a^b mod m via fast exponentiation), and modinverse (a^-1 mod m via extended Euclidean algorithm). Uses BigInt for arbitrary precision. Useful for cryptography and number theory.
Output
A numeric result corresponding to the requested modular arithmetic operation: a mod m for 'mod', a^b mod m for 'modpow', or the modular inverse a^-1 mod m for 'modinverse', all computed using arbitrary-precision BigInt arithmetic.
Example use cases
Example prompt
“Can you compute 2 to the power of 100 mod 1000000007 using fast modular exponentiation (modpow), with a=2, b=100, and m=1000000007?”
Technical details
Endpoint
POSThttps://agent402.tools/api/mod-arithmeticWhen to prefer
Use this endpoint when you need arbitrary-precision modular arithmetic, especially for cryptographic protocols (RSA, Diffie-Hellman), primality testing, or number theory calculations where standard integer overflow would be a problem. Prefer over general-purpose math libraries when you need a hosted, pay-per-call API with BigInt support.
Side effects
- Modulus m <= 0 results in an error (modulus must be positive)
- modinverse fails if no modular inverse exists (when gcd(a, m) != 1)
- Missing required parameter 'b' for modpow operation
- Invalid 'op' string (must be 'mod', 'modpow', or 'modinverse')
- Non-integer inputs cause validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| a | integer | base value |
| b | integer | exponent (required for modpow) |
| m | integer | modulus (must be > 0) |
| op | string | "mod", "modpow", or "modinverse" |
Output
Schema · Response
{
"type": "json",
"example": {
"a": "7",
"b": "256",
"m": "13",
"op": "modpow",
"result": "9"
}
}Tags
x402
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