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Rook – A multi-Agent harness that lives 100% in a browser extension

Rook – A multi-Agent harness that lives 100% in a browser extension is a workflow AI agent for Create and manage multi-step AI agent workflows entirely within a browser, without server deployment. Pricing: Free open-source. As of 2026-09-10, KanonAgent records 2 upvotes. First indexed by KanonAgent on 2026-08-26.
Rook is a browser-based framework that lets developers build and run multi-agent workflows directly in their browser extension.
2 upvotes
Tracked by Kanon since Aug 26, 2026
no signal yet
status
10/100
momentum · conf 0.43
14d
tracked since 2026-08-27
1
evidence records

No signal event on file yet — status is unknown, not "quiet".

📈 Timelinewhat changed, and when
🔎 Known / Unknown 15 of 23 fields unknown
Machine-callable— unknown —
Open source— unknown —
Self-hostable1 inferred —
Bring your own key— unknown —
Autonomy level— unknown —
Pricing model— unknown —
Integrations— unknown —

“Unknown” means we have not verified it — it is not a “no”. Hard filters never treat unknown as false.

🤖 Agent teardown · workflow
Job to be doneCreate and manage multi-step AI agent workflows entirely within a browser, without server deployment.
Who it is forDevelopers and AI enthusiasts
Prerequisitesself-hostable
PricingFree open-source
Traction · why it is risingAttracts users who want local, private, and low-latency AI agent development without cloud dependencies.
Why it matters

It brings multi-agent systems into the browser, enabling secure, real-time, serverless AI collaboration.

Evidence quotesverbatim, from the product’s own materials

“A multi-agent harness that runs entirely in a browser extension”— description
Signal source: Show HN
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FAQ

What is Rook?

Rook is a browser-based framework that lets developers build and run multi-agent workflows directly in their browser extension.

What does Rook do?

Create and manage multi-step AI agent workflows entirely within a browser, without server deployment.

Why does Rook matter?

It brings multi-agent systems into the browser, enabling secure, real-time, serverless AI collaboration.

How much does Rook cost?

Free open-source

Is Rook free?

Yes — Rook has a free tier. Pricing as stated on its own page: Free open-source

Can I self-host Rook?

Yes — Rook can be self-hosted.

How popular is Rook?

As tracked by KanonAgent: 2 upvotes (first indexed 2026-08-26).

What are the best Rook alternatives?

Similar AI agents tracked by KanonAgent: langchain, ponytail, BIG, claude-mem, AEO Engine, autogen.

Rook – A multi-Agent harness that lives 100% in a browser extension alternatives — similar AI agents

langchainponytailBIGclaude-memAEO Engineautogen

Where this fits — browse the same shelf

AI Workflow Automation AgentsAI agents for Build and run AICan I self-host an AI agent for Build and run AI?Self-hosted & open-source AI agents