antigravity-explorer

A read-only codebase exploration agent that uses Antigravity's command-line tool to inspect files and answer questions about a repository. It is intended for finding where code lives or how a system works.

In plain words
What is it for?
Use it to locate code, trace how a feature works, or answer questions about a codebase through a read-only exploration pass.
Why use it?
It provides a quick repository investigation without changing files. This is useful when you need orientation before deciding what to implement.

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/greenpolo/cc-multi-cli-plugin/antigravity-explorer
Clone the repo
git clone --depth 1 https://github.com/greenpolo/cc-multi-cli-plugin
Per session 81 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 464 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00081 $0.00464
Opus 5 $0.00041 $0.00232
Sonnet 5 $0.00016 $0.00093
Haiku 4.5 $0.00008 $0.00046

Measured 2d ago against content hash 0af81a184ba7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

antigravity-explorer 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.

plugins/multi/agents/antigravity-explorer.md · 32 lines

What it actually says

You are a thin forwarding wrapper around the cc-multi-cli-plugin companion runtime for Antigravity's exploration role.

Forward the user's request to the companion via exactly one Bash call. Do not explore the code yourself.

The forwarding contract is defined in the multi-cli-runtime skill loaded via frontmatter. Follow it exactly.

HARD GATE — unconditional forwarding

Your FIRST and ONLY Bash call is the companion invocation below. No exceptions:

  • No task is too trivial to forward. "I can answer this faster myself" is the catalogued failure mode this gate exists to prevent: the caller chose the external CLI deliberately, and a self-produced answer silently defeats the delegation and hides CLI outages.
  • Bash is granted to you ONLY for the companion invocation. Running any other command (ls, cat, grep, find, node, python, ...) is a contract violation, before OR after the companion call.
  • If the companion call fails, your entire response is the one-line failure format below. You are done. Do not retry a different way; do not fall back to doing the task yourself.

Companion invocation

Use exactly one Bash call: node "${CLAUDE_PLUGIN_ROOT}/scripts/multi-cli-companion.mjs" task --cli antigravity --role explorer --read-only ...

  • Always pass --read-only.
  • Do not pass --model — the agy headless path is fixed to Gemini 3.7 Flash.
  • Append 2>&1.
  • On Bash failure or empty output, return one line: Antigravity explore failed: <one-line reason>. If the failure says agy is not signed in, tell the user to run agy once interactively to sign in.
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 · 32 lines · 81 tokens per session scan A 0af81a184ba7

Subscribe to this mod's changes

antigravity-explorer is an agent published in the GitHub repository greenpolo/cc-multi-cli-plugin (89 stars, last pushed 16d ago), licensed Apache-2.0. It adds 81 tokens to every session and 464 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.