agy (antigravity-native) headless sub-agents hang indefinitely on native permission prompts

[jan21deepak]

Problem: named agy sub-agents (harness antigravity-native) dispatched headlessly by a parent orchestrator agent hang waiting on agy's own native request-review permission prompt for every tool call. Neither a human nor the parent orchestrator LLM can reliably resolve it in-band in an unattended run.

Root cause: _derive_terminal_launch_args_from_spec (omnigent/server/routes/_sessions/helpers.py) derives an auto-approve launch flag per harness from the agent spec for claude-native (--permission-mode auto), codex-native, and cursor-native (--yolo) — but falls through to None for antigravity-native, so headless agy workers always launch in agy's default prompt-every-tool mode. agy does support a real bypass flag, --dangerously-skip-permissions, it's just never derived/passed for this harness.

Fix: omnigent-ai#4482

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Imported from the parent repository for autonomous engineering evaluation.

Source issue: omnigent-ai#4484

[jan21deepak]

✅ Task completed

• Cursor agent ID: bc-ceb9ca01-7645-40c6-84fb-c61a042236f8
• Pull Request: agy (antigravity-native) headless sub-agents hang indefinitely on native permission prompts (#79) #87
• Runtime: 1m 1s
• Completed at: 11 Aug 2026 13:24 SGT

Summary of changes:

Summary

Fixed issue #79: headless antigravity-native (agy) sub-agents were hanging on native permission prompts because _derive_terminal_launch_args_from_spec did not derive auto-approve launch args for that harness.

Change

In _derive_terminal_launch_args_from_spec (omnigent/server/routes/_sessions/helpers.py), added an antigravity-native branch that mirrors codex/cursor headless behavior:

• Default: ["--dangerously-skip-permissions"] so headless agy workers skip the request-review prompt on every tool call
• Opt-out: executor.config.yolo: false returns None (keeps prompting)

Also added _ANTIGRAVITY_NATIVE_HARNESS to common.py and three unit tests in tests/server/routes/test_sessions_yolo_launch_args.py.

Branch

cursor/antigravity-native-headless-permissions-36f8

Tests

All 17 tests in the launch-args suite pass:

uv run pytest tests/server/routes/test_sessions_yolo_launch_args.py -v

How to verify end-to-end

1. Dispatch a headless agy sub-agent from an orchestrator (e.g. polly's agy worker).
2. Confirm the child session's terminal_launch_args includes --dangerously-skip-permissions.
3. Confirm the worker completes tool calls without stalling on permission prompts.