Description
opencode run hangs indefinitely after completing all tool calls. The model finishes its work (reads a file, writes a file), but the process never exits. It stays alive with no output, requiring a manual kill.
Reproduction
# Create a simple prompt that asks the model to edit a file
echo "Read compress.py and rewrite it with a better algorithm. Edit the file and exit." \
| opencode run -m github-copilot/claude-sonnet-4.6
The agent:
- Reads the file (tool call completes, output shown)
- Writes the file (tool call completes, "Wrote file successfully." shown)
- Hangs indefinitely — no more output, process stays alive
Observed behavior
> build · claude-sonnet-4.6
→ Read compress.py
← Write compress.py
Wrote file successfully.
# <--- hangs here forever, no exit
Expected behavior
After the model finishes all tool calls and produces its final response, opencode run should exit with code 0.
Context
This was discovered while using opencode run as the agent command in a CLI optimization loop (ratchet). The loop spawns opencode run via sh -c with stdin redirection (< prompt.md), monitors try_wait() on the child process, and expects it to exit after the model completes. The process never terminates, causing the loop to freeze.
Simple prompts (e.g., "What is 2+2?") exit fine. The hang occurs specifically when the model uses tools (Read/Write) and then has nothing left to do.
Environment
- opencode version: 1.2.26
- macOS (darwin)
- Model:
github-copilot/claude-sonnet-4.6
- Invocation:
opencode run -m github-copilot/claude-sonnet-4.6 < prompt.md
Description
opencode runhangs indefinitely after completing all tool calls. The model finishes its work (reads a file, writes a file), but the process never exits. It stays alive with no output, requiring a manual kill.Reproduction
The agent:
Observed behavior
Expected behavior
After the model finishes all tool calls and produces its final response,
opencode runshould exit with code 0.Context
This was discovered while using
opencode runas the agent command in a CLI optimization loop (ratchet). The loop spawnsopencode runviash -cwith stdin redirection (< prompt.md), monitorstry_wait()on the child process, and expects it to exit after the model completes. The process never terminates, causing the loop to freeze.Simple prompts (e.g., "What is 2+2?") exit fine. The hang occurs specifically when the model uses tools (Read/Write) and then has nothing left to do.
Environment
github-copilot/claude-sonnet-4.6opencode run -m github-copilot/claude-sonnet-4.6 < prompt.md