Control CLI
Build or adapt a local harness to drive, inspect, and profile an interactive CLI or TUI...
Install
npx skills add cursor/plugins --skill control-cli -g -a claude-code -y- Repository
- cursor/plugins15k
- Category
- Design
- Updated
- 4d ago
- License
- See repository
- Context cost
- Lightabout 1,020 tokens
- Runs scripts
- No, instructions only
What it does
Build or adapt a local harness to drive, inspect, and profile an interactive CLI or TUI without external services. Use for CLI UX checks, startup regressions, memory leaks, hangs, prompt flows, or terminal demos.
Control CLI
Use a repeatable local harness to exercise an interactive CLI instead of poking at it manually. First reuse the repo's own test/demo harness if it exists; otherwise assemble a temporary harness from standard local tools.
What It Is Used For
- Reproducing CLI/TUI bugs with deterministic input.
- Verifying keyboard flows, prompts, interrupts, resize behavior, and terminal layout.
- Capturing before/after transcripts for bug fixes.
- Profiling startup time, slow operations, hangs, or memory growth.
- Recording a short terminal demo when output is easier to show than explain.
Harness Loop
- Identify the command under test and the smallest reproducible workspace.
- Discover existing local harnesses: package scripts, e2e tests, demo recorders, expect scripts, or PTY helpers.
- If no harness exists, launch the CLI in an isolated terminal session with deterministic env vars.
- Capture the current screen before interacting.
- Send one action at a time: text, Enter, arrows, Escape, Ctrl-C, resize.
- Wait for a concrete screen pattern or prompt before the next action.
- Save the transcript and any profile artifacts.
- Kill the session cleanly.
Harness Options
- Repo-native harness: prefer checked-in scripts because they know the app's startup, env, and prompts.
tmux: managed sessions,capture-pane,send-keys, attach/detach.- PTY probe: use a short Python, Node, or Expect script when tmux is unavailable.
- Runtime inspector: use Node or Bun inspector for CPU profiles, heap snapshots, and live evaluation.
- Terminal recorder: use repo-local demo tools or asciinema-compatible tools when the user asks for a demo.
Minimal tmux Harness
SESSION="cli-harness-$(date +%s)"
tmux new-session -d -s "$SESSION" -- <command-under-test>
tmux capture-pane -pt "$SESSION"
tmux send-keys -t "$SESSION" "help" Enter
tmux capture-pane -pt "$SESSION"
tmux kill-session -t "$SESSION"
For Node CLIs:
