antigravity

A workflow setup for Antigravity CLI, a command-line tool for working with AI agents, covering feature work and research from planning through review and completion.

In plain words
What is it for?
Use it to create and prioritise feature specifications, start branches or worktrees, implement features, run evaluations and code reviews, and close or push completed work.
Why use it?
It gives feature work a defined path and requires implementation logs and checks, so work is less likely to be treated as finished without evidence.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/jayvee/aigon/antigravity
Clone the repo
git clone --depth 1 https://github.com/jayvee/aigon
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,869 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 92% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.01869
Opus 5 $0.00000 $0.00934
Sonnet 5 $0.00000 $0.00374
Haiku 4.5 $0.00000 $0.00187

Measured 2d ago against content hash 71f2b06dc1ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

antigravity scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

92% identical to amp — 17 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.aigon/docs/agents/antigravity.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Antigravity CLI Configuration

Agent Identity

  • Agent ID: ag
  • Worktree Pattern: ../feature-NN-ag-description
  • Implementation Log: Default-required in all modes — solo Drive branch and worktree need at least a one-line log under ./docs/specs/features/logs/; Fleet needs a short structured log. Opt out only with "logging_level": "never" in .aigon/config.json (see .aigon/docs/development_workflow.md).

Commands

Feature Commands (unified for Drive and Fleet modes)

Command Description
aigon-feature-create <name> Create a new feature spec
aigon-feature-prioritise <name> Assign ID and prioritise to backlog
aigon-feature-start <ID> [agents...] Setup for Drive (branch) or Fleet (worktrees)
aigon-feature-do <ID> [--iterate] Implement feature; --iterate runs Autopilot retry loop
aigon-feature-eval <ID> Create evaluation (code review or comparison)
aigon-feature-code-review <ID> Code review with fixes by a different agent
aigon-feature-close <ID> [agent] Merge and complete feature
aigon-feature-push [ID] [agent] Push feature branch to origin for PR review
aigon-feature-autonomous-start <ID> <agents...> Start autonomous feature flow with explicit stop-after control
aigon-feature-cleanup <ID> Clean up Fleet worktrees and branches

Research Commands (unified for Drive and Fleet modes)

Command Description
aigon-research-create <name> Create a new research topic
aigon-research-prioritise <name> Prioritise a research topic
aigon-research-start <ID> [agents...] Setup for Drive or Fleet execution
aigon-research-open <ID> Re-open or attach Fleet research sessions when needed
aigon-research-do <ID> Conduct research (write findings)
aigon-research-review <ID> Review research findings with a different agent
aigon-research-eval <ID> Synthesize findings before close
aigon-research-close <ID> Complete research topic

Read the full file on GitHub · 138 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 138 lines · 0 tokens per session scan A 71f2b06dc1ca

Subscribe to this mod's changes

antigravity is an agent published in the GitHub repository jayvee/aigon (23 stars, last pushed 2d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 1,869 tokens. A static security scan graded it A with 0 findings. It is 92% identical to amp, differing in 17 lines, and is treated as a copy.