If you use this, give this repo a star to keep it live

This free version is updated regularly, but the schedule is not tied to when the values are changed.

(If your use case requires the latest signing values, check https://ofapi.xyz)

Direct link: https://raw.githubusercontent.com/deviint/onlyfans-dynamic-rules/main/dynamicRules.json

Usage (JavaScript)

const time = +new Date()
const url = new URL(fullUrl)
const msg = [
    dynamicRules["static_param"],
    time,
    url.pathname + url.search,
    userId
].join("\n")
const shaHash = sha1(msg);
const hashAscii = Buffer.from(shaHash, 'ascii');

const checksum = dynamicRules["checksum_indexes"].reduce((result, value) => result + hashAscii[value], 0) + dynamicRules["checksum_constant"];
const sign = [dynamicRules["start"], shaHash, Math.abs(checksum).toString(16), dynamicRules["end"]].join(":")
// output: {sign, time}

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