Open Source · Local AI · Chrome Extension

Meet your crab
reading assistant

Constclaw is a free Chrome extension that connects to your local OpenClaw gateway. Highlight any text → get instant AI analysis — all locally, no cloud keys required.

Install Free Read Docs → GitHub ↗

[ Constclaw 🦀 ]

v1.0.0 MIT Chrome 114+

196k+ OpenClaw Stars

5 Analysis Modes

ws:// Local Gateway

$0 Cost Forever

Architecture

How Constclaw works

Constclaw sits between your browser and your local OpenClaw gateway. No data leaves your machine.

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Chrome

Highlight text

WebSocket

Constclaw

ws://127.0.0.1:18789

Provider API

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AI Model

Anthropic / OpenAI

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Instant analysis

Select text, click the floating button — response in the side panel within seconds.

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Fully local

All communication goes through your machine. No cloud API keys in the extension.

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OpenClaw powered

Rides on top of the battle-tested OpenClaw gateway with 196k+ GitHub stars.

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Any website

Works on any webpage — news, research papers, documentation, social media.

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5 analysis modes

Explain, Summarize, Translate, Fact-Check, or Expand any selected text.

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Query history

Last 20 queries stored locally. Click any history item to replay the response.

Ready to read deeper?

Install OpenClaw, load the extension, highlight anything.

Get Started Free Read the docs

Meet your crab reading assistant