Atomburstofficial

Geiger — AI skill for Claude Code

AI community

A Geiger counter for AI agents — one read-only command that inventories every agent, MCP server, plugin, and AI extension on a machine.

How to install Geiger

This entry records only its repository, not the path inside it, so there is no exact command to give. Open Atomburstofficial/geiger and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Geiger does

A Geiger counter for AI agents — one read-only command that inventories every agent, MCP server, plugin, and AI extension on a machine.

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README

geiger

[![CI](https://github.com/Atomburstofficial/geiger/actions/workflows/ci.yml/badge.svg)](https://github.com/Atomburstofficial/geiger/actions/workflows/ci.yml) [![npm](https://img.shields.io/npm/v/geiger-scan)](https://www.npmjs.com/package/geiger-scan) [![license: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE) ![node ≥18](https://img.shields.io/badge/node-%E2%89%A518-brightgreen) ![dependencies: 0](https://img.shields.io/badge/dependencies-0-success)

**A Geiger counter for AI agents.**

One read-only command that inventories every AI agent, harness, MCP server, plugin, and AI extension on a machine — and tells you, in plain language, what each one can touch.

npx geiger-scan

No install. No account. No telemetry. Reads configs and directories, writes nothing (unless you ask for `--json yourfile.json`).

![A geiger scan: findings grouped by ecosystem with exposure labels, a redacted credential, and plain-language fixes](docs/scan-terminal.svg)

Why this exists

In August 2026, an open-source agent harness went from zero to 200,000+ GitHub stars in three weeks. Its plugin ecosystem passed 13,000 repositories in the same window. One-click desktop clients appeared the same day it launched. Instagram carousels now teach office workers to install all of it.

Every one of those installs is a program that can execute commands, read files, and hold credentials — configured in dotfiles nobody looks at twice. Ask yourself the question this tool answers: **what is actually running on this machine, and what can it reach?** Most people cannot answer it. Now it's one command.

What a scan looks like

  GEIGER  ·  a Geiger counter for AI agents
  machine dev-laptop  ·  2026-09-06 12:24 UTC  ·  read-only · no telemetry
  ──────────────────────────────────────────────────────────────

  9 findings across 3 ecosystems  ·  7 can execute code  ·  1 credential in config files

  claude-code  (6)
    Claude Code  agent
      [EXECUTES] [BROAD