SkyBuddy - Chrome Extension

I wanted a way to monitor Bluesky for topics I actually care about without having to scroll endlessly or hand my data over to some third-party API.

This is what led me to build the extension.

SkyBuddy is a Chrome extension that runs on bsky.app and watches for posts matching your keywords. The matching posts get a configurable glow highlight so they stand out from the other posts. Posts you don’t want to see get hidden entirely. And when you want to join the conversation, there’s a Magic Reply button that drafts replies through your own local LLM.

Features:

Keyword Monitoring - two independent keyword lists with toggles. Positive keywords give posts a configurable glow color (default blue). Negative keywords hide posts entirely with display: none. Each list has its own search, pagination, and clear button. Keywords are matched case-insensitively via substring.

Magic Reply with Tones - injects a button into Bluesky reply dialogs. Click it and SkyBuddy extracts the post text, sends it to your local LLM with a tone-specific system prompt, and inserts the generated reply into the composer. Five tones to choose from - Generic, Agree, Disagree, Funny, Informative - each with its own editable prompt that you can customize or restore to default.

Privacy & Control - a master toggle pauses everything without losing your settings. Full-config export/import as a versioned JSON file covers keywords, toggles, LLM config, tone prompts, temperature, max tokens, and glow color. No telemetry, no third-party API calls, no data leaving your machine except to the LLM endpoint you configure.

Right-Click Integration - right-click any hashtag on Bluesky to add it to your positive or negative keyword list. A toast notification confirms the action.

Multiple Backend Support - works with OpenAI-compatible endpoints (llama.cpp, LM Studio, LocalAI) and Ollama. Configure the URL, model name, temperature, and max tokens from the popup.

LLM Status Indicator - the popup header shows a live connection status dot with the LLM endpoint so you always know if your backend is reachable.

Tech Stack

Layer
Platform	Chrome Extension Manifest V3
Language	Vanilla JavaScript (no framework)
Storage	chrome.storage.local
DOM Observation	MutationObserver (rAF-throttled)
Styling	CSS custom properties, inline popup styles
LLM APIs	OpenAI-compatible /v1/chat/completions + Ollama /api/chat
Build	None - loaded unpacked, no bundler

Recent Updates:

• 7/4/2026 | v1.0.0 alpha - Keyword highlighting, negative filtering, Magic Reply with 5 tones, right-click integration, export/import, and full LLM backend support.

Get the Project

SkyBuddy is under active development but the source is available now.

If you want to download the repo, load it unpacked in Chrome, and point it at your local LLM.

View on GitHub