A
licenseA
qualityC
maintenanceMCP server that gives AI agents real interactive terminal sessions for running REPLs, SSH, database clients, and any interactive CLI with clean text output and smart completion detection.
7
84
18
MIT
pty-mcp
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@pty-mcpStart a bash PTY session, run 'ls', and show me the output"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
pty-mcp
An MCP server for interactive PTY sessions — end-to-end testing of CLI apps, REPLs and TUIs by driving a real pseudo-terminal and reading a clean rendered screen back. Exposed to any MCP client (built for Claude Code) over stdio.
Stack
Python 3.14 + venv
pexpect— PTY spawn, text/key injectionpyte— terminal emulator (clean screen rendering, ANSI stripped)mcp— Python MCP SDK
Related MCP server: terminal-use-mcp
Tools
Tool | Description |
| Start a PTY session (command, cwd, env, cols, rows) |
| Send raw text |
| Send a special key (enter, ctrl+c, arrows…) |
| Wait for a regex pattern in the output (with timeout) |
| Current screen state, cleanly rendered (no ANSI) |
| Last N lines of the scrollback buffer |
| Close the session and kill the process |
| List all active sessions |
Example — E2E test
pty_start(session_id="myapp", command="python myapp.py", cwd="/path/to/myapp")
pty_expect(session_id="myapp", pattern="Enter your name:", timeout_ms=5000)
pty_send(session_id="myapp", text="Chris\r")
pty_expect(session_id="myapp", pattern="Welcome, Chris", timeout_ms=3000)
pty_screen(session_id="myapp") # terminal screenshot
pty_close(session_id="myapp")Run
The server is registered in the MCP client and starts with each session. To test standalone: ./start.sh. Transport is stdio, no network port. Logs in logs/mcp_server.log.
This server cannot be installed
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