@extension.dev/mcp
extension.devExplore documented capabilities and connections for @extension.dev/mcp.
What your agent can do
MCP server that lets AI agents (Claude Code, Claude Desktop, Cursor, Copilot, Codex) build, run, inspect, and publish browser extensions. 32 tools for scaffolding, live DOM inspection, log streaming, and store-ready builds across Chrome, Edge, Firefox, Sa
Via CLI.
Tasks depend on the interface and permissions.
Connection methods
Choose a route that fits your agent.
CLI
For agents with a terminal
View setup for CLICLI connection
CLI package
@extension.dev/mcp