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agy-cli-runtime

agy-cli-runtime is a skill for Claude Code from iicmaster/antigravity-plugins. It costs 21 tokens per session (269 once invoked), scanned A, original, MIT.

A shared helper contract for running the Antigravity command-line tool from coding-agent adapters.

In plain words
What is it for?
Building or maintaining Claude Code and Codex adapters that start Antigravity jobs and handle their output and state.
Why use it?
It defines safer process handling, input passing, logging, timeouts, and permission rules when connecting an adapter to Antigravity.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions Claude Code; mentions Codex.

Part of the agy plugin — 5 skills, 7 commands, 1 agent, 1 MCP server shipped together

not rated 7repo 9d ago A scan 21 tokens original MIT

Good fit Building or maintaining Claude Code and Codex adapters that start Antigravity jobs and handle their output and state.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/iicmaster/antigravity-plugins/agy-cli-runtime
View source ↗ iicmaster/antigravity-plugins
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.

Any agent
npx skills add iicmaster/antigravity-plugins --skill agy-cli-runtime
Clone the repo
git clone --depth 1 https://github.com/iicmaster/antigravity-plugins

Made for: Claude Code.

Or install agy, the plugin that ships this one along with the rest of its 5 skills, 7 commands, 1 agent, 1 MCP server.

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 agy-cli-runtime

README.md
[![agentmods](https://agentmods.dev/badge/skills/iicmaster/antigravity-plugins/agy-cli-runtime/github.svg)](https://agentmods.dev/skills/iicmaster/antigravity-plugins/agy-cli-runtime)
Your own site
<a href="https://agentmods.dev/skills/iicmaster/antigravity-plugins/agy-cli-runtime"><img src="https://agentmods.dev/badge/skills/iicmaster/antigravity-plugins/agy-cli-runtime/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 agy-cli-runtime

Your own site · 80×15
<a href="https://agentmods.dev/skills/iicmaster/antigravity-plugins/agy-cli-runtime"><img src="https://agentmods.dev/badge/skills/iicmaster/antigravity-plugins/agy-cli-runtime.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 269 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 $0.00021 $0.00269
Opus 5.5 $0.00008 $0.00108
Sonnet 5.5 $0.00004 $0.00054
Haiku 4.5 $0.00002 $0.00027

Measured 2mo ago against content hash efd357dc5f57, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agy-cli-runtime 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 2mo 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/agy/skills/agy-cli-runtime/SKILL.md · 24 lines

What it actually says

AGY Runtime

Use the shared companion from plugin adapters:

node "<plugin-root>/scripts/agy-companion.mjs" <command> "<raw arguments>"

Safety rules:

  • Call agy through Node spawn argv arrays, not shell-interpolated strings.
  • Omit --print for non-interactive runs and pipe the prompt through child stdin; AGY 1.1.1 detects non-TTY stdin automatically.
  • Do not pass the prompt in argv or command logs.
  • Treat print mode as a CLI transport, not Codex app-server parity. If a timed-out job captured stdout, report it as partial output instead of hiding it behind a generic failure.
  • Use setup --smoke when flag availability is not enough and you need to verify that the local AGY session can complete print mode.
  • Add --dangerously-skip-permissions only when explicitly requested.
  • Keep logs and state under CLAUDE_PLUGIN_DATA when available; otherwise use the runtime fallback outside the source checkout.
  • Keep host adapters thin and share process execution behavior through the companion/runtime.
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. 2mo ago First seen · 24 lines · 21 tokens per session scan A efd357dc5f57

Subscribe to this mod's changes

agy-cli-runtime is a skill published in the GitHub repository iicmaster/antigravity-plugins (7 stars, last pushed 9d ago), licensed MIT. It adds 21 tokens to every session and 269 once invoked, about $0.0001 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 2026-08-31.

Building agents
Related

agy-cli-runtime compared with skills from other repositories

agy-cli-runtime next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
agy-cli-runtimeiicmaster/antigravity-pluginsSkill79d agoMITA21Claude Code
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k2d agoMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill100ktodayApache-2.0A19Claude Code
browser-automationopenclaw/openclawSkill394ktodayMITA36Claude Code
systematic-debuggingobra/superpowersSkill315k5d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143kyesterdayMITA95Claude Code