Geiger is listed as Free. Check https://github.com/Atomburstofficial/geiger for the current plan limits, as vendors change pricing frequently.

Geiger

Q: What is Geiger?

Geiger is a code AI tool listed on Use AI Tools. Geiger is a read-only scanner that inventories every AI agent, harness, MCP server, plugin and AI extension on a machine, then explains in plain language what each one can touch. It ships as an npm package you run with npx, has no dependencies, needs no account, sends no telemetry, and writes nothing unless you ask for a JSON export.

Q: What is Geiger best for?

Geiger is commonly used for Auditing installed AI agents, MCP server inventory, Security reviews. It supports English.

Code🔥 Intermediate✅ Global access

Auditing installed AI agentsMCP server inventorySecurity reviews

FreeEnglish

Geiger is a read-only scanner that inventories every AI agent, harness, MCP server, plugin and AI extension on a machine, then explains in plain language what each one can touch. It ships as an npm package you run with npx, has no dependencies, needs no account, sends no telemetry, and writes nothing unless you ask for a JSON export.

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🎯 Real-World Use Cases

Inventory Every Agent on a Machine

Run one read-only command to list agents, harnesses, MCP servers, plugins and AI extensions

Understand Exposure in Plain Language

See what each discovered agent can reach, grouped by ecosystem with plain-language fixes

Export a Scan for Review

Write findings to a JSON file with --json for tickets, audits or CI checks

⚖️ Honest Review

✅ Pros

+Runs with npx, so there is no install step or account
+Read-only: it reads configs and directories and writes nothing
+Reports exposure with plain-language labels instead of raw config dumps

⚠️ Cons

−Reports exposure but does not fix what it finds
−Coverage depends on which ecosystems and config paths it knows

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Guides and comparisons about code tools

Several code editors open side by side on a screen

CodeOct 19, 2026