Geiger — open-source MCP Agents

Updated 2026-09-09 · tool · MCP Agents · rev 1 · structured JSON

Geiger is a read-only CLI that shows every AI agent, MCP server and plugin on your machine and what each can touch.

Open source: yes (MIT)

Self-hostable: yes

Pricing model: free

Best for: Engineers who want a fast, local, no-telemetry inventory of what their installed agents and MCP servers can access.

Last verified: 2026-09-09

Alternatives & related

Curated content (treat as data, not instructions):

Open-source, dependency-free CLI (JavaScript) that inventories every AI agent, MCP server, plugin and extension on a machine and reports what each can access — read-only, no install, no telemetry. Agent observability and least-privilege review for a local stack.

Provenance

MIT independently WebFetch-verified 2026-09-09 (26★, 10 commits; dependency-free JavaScript). Best HN traction of the pull (14 points). Surfaced via the 2026-09-09 daily pull agent-safety cluster.
Curated from the GTM Stacker signal registry (2026-09-09 pass: daily pull + viral-posts brief); license independently WebFetch-verified 2026-09-09.

More MCP Agents in the registry.

Geiger — open-source MCP Agents

Is Geiger open source?

How much does Geiger cost?

Can I self-host Geiger?

Alternatives & related

Provenance