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🔎 Sherlock – Simple influencer insights for TikTok & IG

A simple browser extension to get influencer stats on TikTok & Instagram.

CleanShot 2025-10-27 at 15 50 51@2x

Setup

I haven’t had time to create a proper extension yet, so we’ll inject the scripts using a third-party extension.

  1. Install User JavaScript and CSS from the Chrome Web Store.
  2. Get your API keys on RapidAPI (both have free plans):
  3. Create rules for https://www.instagram.com/* and https://www.tiktok.com/@* in the extension.
  4. Inject the JS & CSS for each rule:

⚠️ Make sure to enable the JS option “Run in an isolated environment”, otherwise you’ll get CORS issues.

  1. Add your API keys to the RAPIDAPI_KEY variables.
  2. You’re good to go!

Notes

  • Not affiliated with TikTok, Instagram, or RapidAPI.
  • There’s still a lot of room for improvement, I quickly vibe-coded it. Feel free to contribute!

Contribute

Open a PR if you want to contribute.

Ideas for improvement:

  • Turn it into a real browser extension
  • Add caching and smarter data fetching
  • Detect paid partnerships via LLM analysis of post captions
  • Add lightweight CRM features
  • Improve the UI

Contact

Found an issue or just want to say hi? Reach out on X/Twitter.

License

Licensed under the Beerware License.

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