Both the log tool and the console-message tool take an offset, a limit and a direction, with negative offsets counting from the end — so an agent can ask for the last twenty lines instead of receiving the whole buffer. The project describes itself as alpha; treat the browser half as experimental.
A server that manages the processes declared in a devservers.yml — backend, frontend, worker — and streams their logs into a terminal UI you can also click. An experimental Playwright layer adds browser control against what those servers are serving.
- start_server and stop_server by name, including servers it did not start
- get_devserver_statuses — the state of everything configured
- get_devserver_logs with offset, limit and reverse, so a long log is paginated rather than dumped
- browser_navigate, browser_snapshot, browser_click, browser_type, browser_resize and browser_screenshot
- browser_console_messages with the same pagination and an option to clear after reading
- A terminal UI with live log streaming and clickable start and stop
Installed with uv from the repository, then a devservers.yml at the project root declaring each server's command, working directory and port. The client connects over HTTP to http://localhost:3001/mcp while the TUI runs in a terminal. The browser tools need Playwright and its drivers installed separately and the experimental flag switched on in the config.
One command — uv add --dev git+https://github.com/Uninen/devserver-mcp.git --tag v0.6.0