codex-subagent-bridge

Optional bridge module that satisfies the codex_subagent_bridge.run_subagent(...) contract used by the orchestration layer.

It launches codex app-server --listen stdio://, drives one structured turn, and returns the final payload as a Python dict.

Installation

From the package root:

python -m pip install -e ".[dev]"

Current monorepo checkout:

cd /path/to/context-alt-text-monorepo/packages/codex-subagent-bridge
python -m pip install -e ".[dev]"

If you do not want to install it, add src to PYTHONPATH or inject codex_subagent_bridge into sys.modules from the host process.

Development

Run package-local commands from the package root:

make lint-bridge
make fix-lint-bridge
make format-bridge
make mypy-bridge
make test-bridge
make check-bridge

Direct commands also work:

PYTHONPATH=src python -m ruff check src tests
PYTHONPATH=src python -m mypy src
PYTHONPATH=src python -m pytest tests -q

Runtime Behavior

• The bridge keeps the existing seam: prompt + schema + cwd + optional env -> dict
• env values are treated as local runtime hints only and become subprocess or session context for codex app-server
• CODEX_REASONING_EFFORT or REASONING_EFFORT map to turn/start.effort when set to low, medium, high, or xhigh
• MCP endpoints and credentials are not forwarded through the bridge
• Build and test commands must still come from the worktree instruction surface or the rendered prompt
• run_subagent() is concurrency-safe because each default call launches and tears down its own app-server process
• CODEX_SUBAGENT_BRIDGE_SESSION_MODE=shared opts into a reusable app-server process for compatible calls in the same cwd

Integration Note

This package is intentionally small. It provides the bridge seam only; higher-level orchestration policy belongs in the caller.