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Servers/Code Execution/sncro.net
Code ExecutionOfficial
S

sncro.net

Live browser debugging for AI assistants — DOM, console, network via MCP.

0 starsUpdated May 28, 2026
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Overview

Open-source components of sncro — the MCP relay, the browser-side agent, and the framework plugins that let AI coding assistants inspect a live browser. 1. Claude calls create_session (MCP tool) → relay returns a 9-digit session key + URL 2. User visits the URL in the browser where their app is running → confirms via "Allow sncro debugging?" 3. The plugin drops a cookie, agent.js is injected into subsequent HTML responses on that origin 4. agent.js pushes baseline data (console, errors) and long-polls for on-demand queries (query_element, get_page_snapshot, etc.)

Installation

Installation instructions are not available yet.

Configuration

Configuration example is not available yet.

Capabilities

  • Create a debugging session

    ask your AI assistant to call `create_session` so you can connect a live browser tab to the relay.

  • Inspect the current page

    request a full DOM snapshot of the connected browser tab using `get_page_snapshot`.

  • Query a specific element

    ask the assistant to retrieve details about a DOM element via `query_element`.

  • Capture console output

    have the assistant surface console logs and errors that agent.js pushed from the browser.

  • Integrate sncro into a FastAPI or Flask app

    drop in the provided middleware so your local dev server injects agent.js automatically.

Tags

  • browser
  • debugging
  • development
  • browser-automation

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