{"rewrite":{"id":"r_32088511d6a7ea8d96b2164c","clusterId":"c_4f51cd223870c3488e4f8446","slug":"geiger-scans-a-pc-and-lists-every-ai-agent-and-mcp-server-it-finds","model":"deepseek-v4-1-flash","headline":"Geiger Scans a PC and Lists Every AI Agent and MCP Server It Finds","summary":"Geiger, a free tool published on GitHub by Atomburstofficial, inventories the AI agents, harnesses, MCP servers, Hooks, and AI extensions configured on a machine. It runs through npx on Node.js 18 or later, with no global install and no account. Each detected item is labeled for what it can reach, such as code execution, credentials, filesystem, or network access, and credential values are reported by key name only, not shown.","whyItMatters":"An inventory tool answers a question that arrives only after people have installed a stack of agents and MCP servers and forgotten where each one sits, and Geiger's labels make the access each item already holds readable without exposing the credentials themselves.","webCardHtml":"\u003cp\u003eThe scan command is a single line: npx geiger-scan. Its output groups agents such as Claude Code and Codex alongside MCP servers, Hooks, and extensions registered to Cursor and VS Code, so the list reflects what is on the machine rather than what one editor knows about.\u003c/p\u003e\u003cp\u003eLabels attached to each entry describe capability: EXECUTES, HOLDS-SECRETS, BROAD-FILESYSTEM, BROAD-WEB, NETWORK, UNKNOWN-ORIGIN. A --html option writes a self-contained report with each item\u0026#39;s configuration file and remediation steps, and --json saves a baseline that --diff compares against a later scan. Where a configuration file holds something credential-shaped, Geiger reports the key name, the file, and the credential type, not the value.\u003c/p\u003e","blueskyPost":"Geiger labels each detected agent by what it can reach, but reports credential values by key name only. The tool maps blast radius without ever holding the secret, which is the line most inventory scripts cross.","twitterPost":"Geiger flags what each AI agent can reach, then reports credentials by key name only. It maps access without copying secrets.","threadsPost":"Geiger's design choice is the detail: it labels every agent, harness, and MCP server by what it can reach (code execution, credentials, filesystem, network) but prints credential values by key name only. An inventory tool that never holds the secret is what makes running it on your own machine reasonable.","newsletterBlurb":"Geiger, published on GitHub under Atomburstofficial, scans a PC and lists the AI agents, harnesses, MCP servers, Hooks, and AI extensions configured there. It runs via npx on Node.js 18 or later without a global install or account, and labels each item by what it can access. Credential values are not printed, only the key name, file, and credential type.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20261012-geiger/\",\"title\":\"Free tool \\\"Geiger\\\" scans, lists, and reports every AI agent, harness, MCP server, plugin, and AI extension installed on your PC\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4710,"outputTokens":659,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1791799634,"createdAt":"2026-10-12T10:02:09.000Z","publishedAt":"2026-10-12T10:06:08.000Z","updatedAt":"2026-10-12T10:06:08.000Z"},"cluster":{"id":"c_4f51cd223870c3488e4f8446","canonicalTitle":"無料で自分のPCにインストールされているAIエージェント・ハーネス・MCPサーバー・プラグイン・AI拡張機能をすべてスキャンして列挙してレポートしてくれる「Geiger」","representativeArticleId":"a_dd87e6551c760c6f0457cb4f","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Geiger\"],\"studios\":[],\"people\":[],\"type\":\"announcement\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-12T09:00:00.000Z","lastSeenAt":"2026-10-12T09:00:00.000Z","updatedAt":"2026-10-12T10:06:07.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20261012-geiger/","title":"無料で自分のPCにインストールされているAIエージェント・ハーネス・MCPサーバー・プラグイン・AI拡張機能をすべてスキャンして列挙してレポートしてくれる「Geiger」"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Geiger"],"studios":[],"people":[],"type":"announcement","domain":"other","is_roundup":false},"keyFacts":null}