gemini-extension-package

gemini-extension-package is a plugin for Gemini CLI from 777genius/universal-agent-plugins. Its token cost is not measured, scanned C, original, Apache-2.0.

A reference package for extending the Gemini command-line coding assistant with connected services, settings, themes, plans, and safety restrictions. It includes integrations for Linear, Playwright, and Supabase.

In plain words
What is it for?
Use it as a reference when defining assistant extensions, service connections, deployment settings, plan storage, and excluded commands.
Why use it?
It provides a starting structure for configuring a command-line assistant and its external tools in one package.

Plugin for Gemini CLI

Written for Gemini CLI: a Gemini CLI extension manifest. Also seen: mentions Gemini CLI.

Good fit Use it as a reference when defining assistant extensions, service connections, deployment settings, plan storage, and excluded commands.

Compare 6 plugins from other repositories ↓
Install with agentmods
npx agentmods add plugins/777genius/universal-agent-plugins/gemini-extension-package
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.

Clone the repo
git clone --depth 1 https://github.com/777genius/universal-agent-plugins

Made for: Gemini CLI.

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 gemini-extension-package

README.md
[![agentmods](https://agentmods.dev/badge/plugins/777genius/universal-agent-plugins/gemini-extension-package/github.svg)](https://agentmods.dev/plugins/777genius/universal-agent-plugins/gemini-extension-package)
Your own site
<a href="https://agentmods.dev/plugins/777genius/universal-agent-plugins/gemini-extension-package"><img src="https://agentmods.dev/badge/plugins/777genius/universal-agent-plugins/gemini-extension-package/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 gemini-extension-package

Your own site · 80×15
<a href="https://agentmods.dev/plugins/777genius/universal-agent-plugins/gemini-extension-package"><img src="https://agentmods.dev/badge/plugins/777genius/universal-agent-plugins/gemini-extension-package.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade C, and why

gemini-extension-package scanned grade C with 1 finding 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

"run_shell_command(rm -rf)"
examples/plugins/gemini-extension-package/gemini-extension.json · 77 lines

What it actually says

{
  "contextFileName": "GEMINI.md",
  "description": "Reference Gemini CLI extension package",
  "excludeTools": [
    "run_shell_command(rm -rf)"
  ],
  "mcpServers": {
    "linear": {
      "headers": {
        "Authorization": "Bearer ${LINEAR_API_KEY}"
      },
      "url": "https://mcp.linear.app/mcp"
    },
    "playwright": {
      "args": [
        "-y",
        "@playwright/[email protected]"
      ],
      "command": "npx"
    },
    "supabase": {
      "headers": {
        "Authorization": "Bearer ${SUPABASE_ACCESS_TOKEN}"
      },
      "url": "https://mcp.supabase.com/mcp?project_ref=${SUPABASE_PROJECT_REF}"
    }
  },
  "name": "gemini-extension-package",
  "plan": {
    "directory": ".gemini/plans",
    "retentionDays": 7
  },
  "settings": [
    {
      "description": "Deployment profile used by local extension lifecycle checks.",
      "envVar": "RELEASE_PROFILE",
      "name": "release-profile",
      "sensitive": false
    }
  ],
  "themes": [
    {
      "background": {
        "diff": {
          "added": "#edf7ed",
          "removed": "#fdecec"
        },
        "primary": "#fff9f2"
      },
      "name": "release-dawn",
      "status": {
        "error": "#b42318",
        "success": "#18794e",
        "warning": "#9a6700"
      },
      "text": {
        "accent": "#b3571f",
        "link": "#8f4d1f",
        "primary": "#2e1f14",
        "secondary": "#6f5a4a"
      },
      "ui": {
        "active": "#b3571f",
        "comment": "#6f5a4a",
        "focus": "#18794e",
        "gradient": [
          "#b3571f",
          "#d99058",
          "#f3c48b"
        ]
      }
    }
  ],
  "version": "0.1.0",
  "x_galleryTopic": "gemini-cli-extension"
}
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 · 77 lines scan C 5890991b943f

Subscribe to this mod's changes

gemini-extension-package is a plugin published in the GitHub repository 777genius/universal-agent-plugins (14 stars, last pushed today), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-06.