LX Obsidian Labs
By LX Obsidian Labs

Synapse AI — your AI browser agent

An AI-powered Chrome / Edge / Brave extension that turns any web page into an autonomous, controllable workspace. It runs an observe ? plan ? execute ? verify loop: it reads the live page, an AI model picks one action, the extension performs it, checks the result, and repeats until your objective is done. Works out of the box — no API key required.

CAPABILITIES

What Synapse AI can do

A single extension that combines browser automation, AI content generation, and workflow intelligence.

Autonomous web automation

Navigate, click, type, extract, and fill forms on any page. The agent plans each step and verifies the result before continuing.

AI content generation

Generate posts, replies, and copy in your brand voice. Built for Facebook page management and social operating workflows.

Vision fallback

When the DOM is empty or unclear, Synapse understands a screenshot of the page so automation never gets stuck.

Self-learning memory

Model rotation, failover, and a technical HUD keep tasks reliable. Outcomes feed a memory that improves future runs.

No key required

AI routing goes through a secure hosted proxy, so the extension works immediately — no API key to configure.

Site-specific playbooks

Ready-made workflows for ChatGPT, Gmail, YouTube, Facebook, Google, LinkedIn, GitHub, Canva and more.

HOW IT WORKS

An agent loop you can steer

Type an objective and Synapse does the work — step by step, transparently.

1

Observe

The extension reads the live page — its DOM, forms, and visible content — to understand the current state.

2

Plan

An AI model (NVIDIA NIM Nemotron / Llama / VILA) picks the single best next action toward your goal.

3

Execute

Synapse performs the action — click, type, extract, fill — directly on the page.

4

Verify

It checks the result and loops until the objective is complete. Use Pause / Stop in the HUD to stay in control.

GET SYNAPSE AI

Download & install

Free, open distribution via GitHub Releases. Always pulls the latest build automatically.

Install from the downloaded ZIP

  1. Click Download for Chrome above and unzip the file. You'll get a folder containing manifest.json.
  2. Open your browser's extensions page: chrome://extensions, edge://extensions, or brave://extensions.
  3. Turn on Developer mode (top-right toggle).
  4. Click Load unpacked and select the unzipped folder (the one with manifest.json).
  5. Pin Synapse AI to your toolbar and click it to open the side panel. That's it — the AI works out of the box.
Version: v1.1.1 Manifest: MV3 Browsers: Chrome · Edge · Brave Requires: Chromium v100+
Download Synapse AIv1.1.1 — free Browse all releases on GitHub
FAQ

Frequently asked questions

Answers to the most common questions about Synapse AI.

Is Synapse AI really free?

Yes. Synapse AI is distributed for free via the Chrome Web Store and GitHub Releases — no trials, no limits, no subscriptions.

Do I need an API key to use it?

No. AI routing goes through a secure hosted proxy, so the extension works out of the box without configuring any API keys.

Which browsers does Synapse AI support?

Chrome, Edge and Brave — any Chromium browser v100 or newer, using Manifest V3.

How does the AI decide what to do on a page?

It runs an observe → plan → execute → verify loop. It reads the live page, an AI model (NVIDIA NIM Nemotron / Llama / VILA) picks the next action, the extension performs it and verifies the result — with a vision fallback if the DOM is unclear.

Is Synapse AI open source?

Yes. The source lives on GitHub at lx-obsidian-labs/synapse-social, and you can browse every release there.

How do I get the latest version?

The Download button always pulls the latest build — it checks GitHub Releases automatically and falls back to the newest known version if the API is unavailable.

Ready to automate the web?

Download Synapse AI today, or explore the LX AI Platform — build and preview real web apps in your browser with free NVIDIA and OpenRouter models.

Download Free Try the AI Platform Browse Marketplace