Sleep Cycles

{
  "anchorTime": "7:00 AM",
  "asOf": "2026-10-12T01:41:13.882Z",
  "cycleMinutes": 90,
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "fallAsleepMinutes": 15,
  "know": "wake",
  "notChecked": [
    "your real sleep need, which varies by person and age",
    "how long you actually take to fall asleep or how long your cycles last",
    "…1 more"
  ],
  "options": [
    {
      "bedtime": "9:45 PM",
      "bedtimeDayOffset": -1,
      "cycles": 6,
      "hoursInBed": 9.25,
      "hoursOfSleep": 9
    },
    {
      "bedtime": "11:15 PM",
      "bedtimeDayOffset": -1,
      "cycles": 5,
      "hoursInBed": 7.75,
      "hoursOfSleep": 7.5
    }
  ],
  "reasons": [
    "Each option is cycles x 90 minutes of sleep plus 15 minutes to fall asleep.",
    "A dayOffset of -1 means the previous calendar day, +1 the next day."
  ],
  "source": "computed locally (cycle length and fall-asleep allowance are rule-of-thumb inputs)",
  "summary": "To wake at 7:00 AM, go to bed at 9:45 PM (6 cycles); 4 options listed.",
  "verdict": "COMPUTED"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://focus-sleep-calc.x402tookit.com/sleep-cycles?know=wake&time=7%3A00+AM'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://focus-sleep-calc.x402tookit.com/sleep-cycles?know=wake&time=7%3A00+AM' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffocus-sleep-calc.x402tookit.com%2Fsleep-cycles
const res = await pay("https://focus-sleep-calc.x402tookit.com/sleep-cycles?know=wake&time=7%3A00+AM");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://focus-sleep-calc.x402tookit.com/sleep-cycles?know=wake&time=7%3A00+AM")
    print(res.status_code, res.text)