Minimal coding-agent TUI built with the AI SDK for Python and Textual. One file, one tool.

• a single bash tool that streams command output into the transcript
• streamed markdown replies (and reasoning, when the model emits it)
• every bash call is gated behind a ToolApproval hook: the run suspends, a y/n prompt appears above the composer, and the decision is resolved in-process with ai.resolve_hook()
• messages typed while the agent is busy are queued and run in order; Esc interrupts the current turn

The agent runs arbitrary shell commands in your working directory once you approve them. Run it somewhere you don't mind it touching.

cd examples/apps/coding_agent
uv run main.py

Set AI_GATEWAY_API_KEY first. MODEL_ID overrides the default model (anthropic/claude-sonnet-4.6).