[Sargares22]

What

Adds the Antigravity CLI (agy) as a reviewer, antigravity:<model>, and as a host. Like every other row of the table it is offered only when the CLI is installed, and the model is whatever the user picks at setup.

Why it needs more than a table row

Checked on agy 1.3.0:

• In print mode the prompt is only the value of -p, an argument. Plain text on stdin is ignored, so < {brief} > {out} cannot work as is, and a brief in argv is what rule 3 of AGENTS.md forbids.
• --input-format stream-json does read stdin: one JSON message per line, {"event":"user","message":{"content":"…"}}. It requires --output-format stream-json, so stdout becomes an event stream and the answer is result.response.

How

The exchange lives in a small adapter next to the table, scripts/agy-stream.py (brief on stdin, review on stdout), and the row stays an ordinary command line:

python3 '{scripts}/agy-stream.py' {bin} {model} < {brief} > {out}
cmd /d /c --% python "{scripts}\agy-stream.py" {bin} {model} < {brief} > {out}

{scripts} is the one new placeholder: the directory of the table, filled in together with {bin} by the helper and both detection twins. The run and collect code of crossreview.py is untouched; the helper gains the placeholder, a parser for agy models and the host entry.

The first commit of this branch did it differently: two placeholders only the helper understood ({brief_json}, {out_json}). The second commit replaces that, because a roster command has three runners, the helper, Coddy's built-in coordinator and a shell without Python, and the coordinator skips an entry without {brief} and {out}. Squash on merge if you prefer one commit.

What the adapter does with the stream:

Stream	Reviewer
result with SUCCESS	the review is response
result with another status	exit code 1 whatever the CLI's own, so failed; response, or failing that the streamed text, is still printed
denied_actions in the result	listed on stderr
the CLI dies without a result	the last agent response is printed, the exit code is kept
brief is not UTF-8	refused with a note, instead of being altered

The conversation id goes to stderr as soon as the CLI reports it, so a reviewer that timed out can be recovered with agy --conversation <id>.

Host: the global roster sits next to Antigravity's settings.json in ~/.gemini/antigravity-cli, the local one in .agents; aliases agy and antigravity-cli.

Version 2.1.0 in SKILL.md and the three manifests. The release mirror into rpa-skills and coddy-agent is left to you.

Things to decide

1. It is not read-only. In print mode --mode plan did not stop a file write, inside or outside the working directory, when the prompt asked for one. Shell commands are denied, because print mode cannot ask for the permission. I found no per-run switch in 1.3.0. So this reviewer rests on the brief's tool ban and the empty work directory, the footing Kimi and Koda already have. references/agents.md and the README say so.
2. The price of the adapter. This reviewer needs Python, the roster holds the absolute path of the script (a roster moved to another machine wants init --import --refresh, and roster warns about it), and a timeout leaves no partial review.
3. Where Antigravity loads global skills from is not clear from its documentation. I added ~/.gemini/antigravity-cli/skills to the README install loop and to the lookup list in SKILL.md because that directory exists and holds skills on the machine I checked. Drop both lines if you know better.

Verification

• python -m unittest discover -s tests: 61 tests pass on Windows 11 (Python 3.14) and on Ubuntu 24.04 under WSL (Python 3.12). Not run on macOS or on Python 3.8.
• New tests drive a stub agy through the table's own row: a 150 KB brief with CRLF and non-ASCII text arrives byte for byte; error, aborted, denied-tool, died, timeout and non-UTF-8 cases; detection agreeing in the Python, sh and PowerShell twins with {scripts} filled; the row run through PowerShell with the prologue Coddy wraps around a command; the parser against event lines captured from the real CLI.
• Real CLI, Windows: detect in both twins, models antigravity, probe, and a real review through run / wait / collect on gemini-3.8-flash-low (5 KB brief, 32 s).
• Cross-reviewed with this skill. Fixed from it: the conversation id was written only after the CLI had exited, so a timeout lost it; a failed result with an empty response dropped the streamed text; the adapter path in double quotes let a shell expand $ in it. Not taken: resolving $PSScriptRoot through junctions (a warning at most).

[EvilFreelancer]

Superseded by branch feat/antigravity-reviewer (pushed to this repository, keeping your commits in history).

Review findings:

• the stream-json adapter (agy-stream.py, the {scripts} placeholder) is replaced by the plain -p "\$(cat brief)" template, the same deal koda already has: agy -p takes the prompt only as an argument anyway, so the adapter bought freedom from the OS argument limit at the price of an extra script, a Python dependency inside the stored roster command and quoting caveats;
• the koda-specific argument-limit warning and the exec-mode check now follow the template's shape instead of the agent name;
• the ANSI parser for agy models was widened to the full CSI range;
• AGENTS.md now records antigravity as the exception to the read-only hard rule.

Thank you for the contribution - the model listing, host/roster wiring and documentation are kept.