model_providers.<id>.env_key: env var for provider API key. model_providers.<id>

otel.trace_exporter: trace exporter selection.

otel.metrics_exporter: metrics exporter selection.

otel.log_user_prompt: include raw user prompts in OTEL.

otel.exporter.<id>.endpoint|protocol|headers|tls.*: exporter transport config.

otel.trace_exporter.<id>.endpoint|protocol|headers|tls.*: trace exporter transport config.

instructions: reserved for future use; docs say prefer model_instructions_file or AGENTS.md.

developer_instructions: extra developer instructions injected into the session.

commit_attribution: override co-author trailer.

project_root_markers: files used to detect project roots.

project_doc_max_bytes: max bytes read from AGENTS.md.

project_doc_fallback_filenames: fallback project-doc filenames.

check_for_update_on_startup: auto-update check behavior.