Api Endpoint

numtheory.openverbs.com

Euler's totient φ(n) — the count of integers in [1, n] coprime to n — for a positive integer ≤ 10^15 (it is computed from the prime factorization).

Open interactive test console

Offering

Provider: numtheory.openverbs.com
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Science And Education
Delivery: Not provided
Pricing model: Not provided
x402 version: 1

Endpoint context

URL: https://numtheory.openverbs.com/v1/totient
MIME type: Not provided
First seen: 2026-10-16T02:31:55.405Z
Last seen: 2026-10-26T00:14:09.965Z
Tags: None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.004 USDC
Atomic price: 4000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "4000",
    "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A"
  }
]

Observed health

Status: Healthy
Latest latency: 174 ms
Average latency: 6413 ms
HTTP status: 402
Last checked: 2026-11-02T04:37:53.239Z
Reachability: 91.7% over 12 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{}

Output schema

null