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JevMade field notes / Architecture and setup guide

Filter your X timeline with custom rules and an AI assistant

You will learn how to use a browser extension to hide specific topics on X. It uses an AI assistant to read posts, applying your personal rules while keeping close calls visible so you do not miss anything.

Original by tshmieldevBrowser use

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Credits and license

“Filter an X timeline with Sharp” by tshmieldev. Read the original source.

This expanded guide is an AI-narrated adaptation of the source’s essential explanation, examples and caveats, not a word-for-word reading. The synthetic voice does not imitate the author or imply their endorsement.

License: MIT

MIT License

Copyright (c) 2026 tshmieldev

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Our summary

Sharp is a browser extension that cleans up your X timeline by hiding posts you do not want to see. You can write simple instructions telling an AI assistant what to block, helping you remove annoying topics or focus on specific subjects without relying on standard algorithms.

The extension first checks your list of blocked words and hidden authors. If a post passes those rules, it asks the AI assistant to score the content against your instructions. Uncertain posts stay visible behind a tinted banner, and if the connection fails, the post simply appears normally.

This tool is useful for people who want strict control over their social media feeds. You must provide your own API key, which is a private access code for the AI provider. Your privacy depends entirely on that chosen provider and the permissions you grant the extension.

Key takeaways

  1. Set up blocked words and specific authors to hide before the software checks the remaining posts.
  2. Uncertain posts appear behind a visible banner so you can decide if they belong on your timeline.
  3. The extension shows posts normally if the connection fails, preventing your timeline from going completely blank.

Building this extension from its source files requires specific software called Bun. Because there is no central server, your data goes directly to your chosen AI provider.

GitHub README and background classifier · Source reviewed

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