Copilot CLI Agent Exits Before Prompt Sent

[bharatsn123]

Copilot CLI is listed as a supported agent in parallel-code (README, agents.ts), but it doesn't work when spawned as a subprocess via the -p "{prompt}" command-line invocation. The process exits before the prompt is delivered or processed.

Reproduction Steps

1. Open parallel-code UI
2. Select Copilot CLI as an agent
3. Enter a task prompt
4. Attempt to create a task
5. Observe: Agent fails with "Agent exited before prompt was sent"

[bharatsn123]

Screenshot:

[bharatsn123]

Note: once I installed claude code, the issue is resolved. I do not know if this was a bug.

[johannesjo]

Thank you! I'll have a look. Might be this is not 100% reliable all the time.