This repository provides a production-ready signature generation server for TikTok API requests, specifically generating the required X-Bogus and X-Gnarly signatures. It operates by running a pool of headless Chromium browsers via Puppeteer with stealth plugin, each maintaining a separate incognito identity with its own cookies and browser fingerprint. The server exposes REST API endpoints (`/signature`, `/fetch`, `/report`, `/health`, `/restart`) and manages identity rotation, background minting, and request queuing for reliable throughput. It includes a standalone pure Node.js implementation of the X-Gnarly encoding algorithm (`xgnarly.mjs`) that can be used independently. The architecture is a monolith server with a smart identity pool pattern, but it is heavily dependent on an obfuscated TikTok SDK bundle (`webmssdk_*.js`) loaded into the browser, making it fragile to TikTok's anti-bot changes. The repo is popular (1046 stars) but appears somewhat stale with no recent commits, and its reliance on Puppeteer and opaque SDK introduces technical drift risks.