MCP Server · Developer Tools

@extension.dev/mcp

MCP server that lets AI agents (Claude Code, Claude Desktop, Cursor, Copilot, Codex) build, run, inspect, and publish browser extensions. 31 tools for scaffolding, live DOM inspection, log streaming, and store-ready builds across Chrome, Edge, Firefox, Sa

Tier 1 sealed by lossy-channel-auto
Source
https://github.com/extensiondev/mcp
Registry namespace
io.github.extensiondev/mcp
Imported from
npm
License
MIT
Pricing
Open Source
Added
Jul 19, 2026

Seal evidence

Auto-sealed Tier 1 on import from npm registry search. Lossy Channel layers 1–2 to be backfilled by the Foreman.

  • L1-wash

Pinned to 4.6.0

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