Geiger
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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No install snippet on purpose. A working MCP config is a command, its arguments and an environment block — the last two are where API keys live, so this catalogue never stores them and cannot publish them. Follow the link above for the authors' own instructions.
Geiger is a 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. Geiger is open source under the MIT license, with zero dependencies, no account required, and no telemetry. Geiger uses plain-language exposure labels instead of scores, such as EXECUTES, HOLDS-SECRETS, and BROAD-FILESYSTEM, to describe what each finding can do.
Geiger is read-only: the only write it ever performs is the report file you explicitly name, and it never executes what it finds. Geiger reports credentials by shape and key name only, never showing any part of the value, and this is enforced by its test suite.
Summary drafted from the project's own website. Every sentence is backed by text on that page and was reviewed before publishing.