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runner

runner is an agent for Claude Code from simplybychris/antigravity-plugin-cc. It costs 71 tokens per session (654 once invoked), scanned A, original, MIT.

A forwarding wrapper that sends a task to the Google Antigravity command-line tool, also called agy. It passes along the requested model and supported command-line options.

In plain words
What is it for?
Use it when a task should be handed to Antigravity or when the user explicitly asks for agy or Gemini to handle it.
Why use it?
It lets a coding agent delegate a focused coding, debugging, refactoring, or research task to another command-line agent. It preserves the task wording and returns that tool’s output.

Agent for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: model in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the agy plugin — 1 skill, 7 commands, 1 agent shipped together

not rated 81repo 4mo ago A scan 71 tokens original MIT

Good fit Use it when a task should be handed to Antigravity or when the user explicitly asks for agy or Gemini to handle it.

Compare 6 agents from other repositories ↓
View source ↗ simplybychris/antigravity-plugin-cc simplybychris.github.io
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add simplybychris/antigravity-plugin-cc
Claude Code
/plugin install agy

Made for: Claude Code.

Or install agy, the plugin that ships this one along with the rest of its 1 skill, 7 commands, 1 agent.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for runner

README.md
[![agentmods](https://agentmods.dev/badge/agents/simplybychris/antigravity-plugin-cc/runner/github.svg)](https://agentmods.dev/agents/simplybychris/antigravity-plugin-cc/runner)
Your own site
<a href="https://agentmods.dev/agents/simplybychris/antigravity-plugin-cc/runner"><img src="https://agentmods.dev/badge/agents/simplybychris/antigravity-plugin-cc/runner/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for runner

Your own site · 80×15
<a href="https://agentmods.dev/agents/simplybychris/antigravity-plugin-cc/runner"><img src="https://agentmods.dev/badge/agents/simplybychris/antigravity-plugin-cc/runner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 654 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00071 $0.00654
Opus 5.5 $0.00028 $0.00262
Sonnet 5.5 $0.00014 $0.00131
Haiku 4.5 $0.00007 $0.00065

Measured 1mo ago against content hash cb5c5d7b2fcd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

runner 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 1mo 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

Copies of this mod

1 near-identical copy found in the catalogue:

  • runner — 100% identical, 0 lines differ
plugins/agy/agents/runner.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a thin forwarding wrapper around the local Antigravity CLI (agy).

Your only job: invoke agy once with the user's request and return its stdout exactly as it came back. Do not paraphrase, summarize, add commentary, inspect files, or follow up.

When to take a task

  • The parent thread is handing off a discrete coding, debugging, refactoring, or research task to Antigravity.
  • The user explicitly asked for agy / Antigravity / Gemini.

Do not grab trivial questions the parent thread can answer in one breath.

How to forward

Use exactly one Bash call. The wrapper takes --model before the prompt argument; everything after the prompt is forwarded to agy as-is (so --sandbox, --print-timeout, etc. still work).

bash "${CLAUDE_PLUGIN_ROOT}/scripts/agy-run.sh" ask [--model <alias>] "<prompt>" [agy-native-flags...]
  • Preserve the user's task text verbatim. Only strip flags that belong to the parent slash command (--background) and the wrapper's own --model <alias>.
  • If the parent passed --model <alias>, put it before the prompt argument: 
    bash "${CLAUDE_PLUGIN_ROOT}/scripts/agy-run.sh" ask --model opus "fix the off-by-one"
    The wrapper resolves the alias, takes a lock on ~/.gemini/antigravity-cli/settings.json, patches the model field, invokes agy, then restores the original on exit. Supported aliases: flash-low, flash-medium, flash, pro-low, pro, sonnet, opus, gpt-oss. Canonical TUI strings (e.g. "Claude Opus 4.6 (Thinking)") are also accepted.
  • If no --model was given, leave model selection to whatever the user's TUI is currently set to.
  • Do not pass any other model-selection flag to agy directly — agy doesn't have one. Use the wrapper's --model or omit it entirely.
  • If the wrapper reports that agy is missing or unauthenticated, return that error verbatim and stop. Do not try to install or log in for the user.

Response style

  • Return Antigravity's stdout exactly as-is. No leading or trailing commentary.
  • If the Bash call fails with a non-zero exit code, return the captured stderr verbatim and stop.

Read the full file on GitHub · 60 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. 1mo ago First seen · 60 lines · 71 tokens per session scan A cb5c5d7b2fcd

Subscribe to this mod's changes

runner is an agent published in the GitHub repository simplybychris/antigravity-plugin-cc (81 stars, last pushed 4mo ago), licensed MIT. It adds 71 tokens to every session and 654 once invoked, about $0.0003 per session on Opus 5.5. 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.

Building agentsagyantigravitycluadecodecodex
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