Verified on 2026-07-27 for antigravity_cli_sdk 0.2.0.
The release environment did not contain an installed/authenticated agy
binary. Provider behavior claims are therefore limited to the documented CLI
surface already represented by checked-in offline fixtures and tests. The
optional live suite remains the gate for an operator-authenticated binary.
| Behavior | Source/evidence | Support boundary |
|---|---|---|
| plain-text print output | Core Antigravity profile and TypesTest | non-empty lines become byte-faithful assistant deltas |
| sandbox | ArgBuilderTest and CLITest | renders --sandbox; does not claim tools/MCP/prompts are absent |
| permission bypass | ArgBuilderTest and CLITest | renders --dangerously-skip-permissions |
| print timeout | OptionsTest and argument tests | renders provider-native --print-timeout |
| conversation/continue | argument and example suites | renders --conversation and --continue |
| extra directories | argument and example suites | repeatable --add-dir, never comma-delimited |
| governed launch | GovernedLaunchTest | command/cwd/env/credential authority fails closed |
| structured output | Core feature manifest and CLITest | unsupported; typed rejection before process start |
| completion-only | Core feature manifest and CLITest | unsupported; sandbox/permissions are insufficient evidence |
| live provider run | test/live/antigravity_live_test.exs | optional; requires installed/authenticated agy |
Reversing either unsupported decision requires captured current CLI version/help, sanitized real frames, repeatable adversarial tests, and proof that no caller option or ambient provider setting can widen the claimed posture.