webbrain

Open-source browser extension that puts an AI agent in a side panel to chat about pages and run multi-step browser tasks.

Agent by webbrain-one

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Setup steps are in the repository. Website · Repository

About

WebBrain is a browser extension for Chrome, Firefox and Edge that puts an AI agent in a side panel. Users can ask about the current page or hand it a task, and it can click, type and navigate; Ask, Act and Dev modes control what it is allowed to do. It runs on a managed default model, a cloud API, or a local OpenAI-compatible server such as llama.cpp, Ollama or vLLM.

Use cases: browser-automation, web-scraping

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Fact sheet

Jobs: browser automationREADME
Autonomy: Supervised: runs multi-step tasks, asks at checkpointsREADME
Where you use it: Browser extensionREADME
Hosting: Hosted or self-hostedREADME
Models: webbrain-compass, llama.cpp, ollama, vllm, lm-studioREADME
Open source: YesREADME
Billing: The managed default model (WebBrain Compass 1.0) needs no API key or local setup; other models use your own keys or local servers.README

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Signals

Stars: 1,530
Forks: 185
Open issues: 6
Last commit: Oct 22, 2026 (8 days ago)
Last release: Oct 20, 2026 (10 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License: Other
Repository: github.com/webbrain-one/webbrain
Website: webbrain.one
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: README github-graphql

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Cite this page

webbrain. Agent Mart. https://agentmart.dev/agents/webbrain (last updated 2026-10-24)