Geiger inventories every agent, MCP server and plugin on a machine in one read-only command.

Atomburstofficial/geiger runs as npx geiger-scan, reads configs and directories, and lists every agent, harness, MCP server, plugin and editor extension installed, labeling in plain language what each can touch. Zero dependencies, no account, no telemetry, writes nothing unless you pass --json, credentials redacted in output. Created September 6, 94 stars, MIT. I ran it and found two MCP servers I'd forgotten were configured, which is the entire pitch.