# Quartermaster (QM)

> Updated 2026-08-25 · type: tool · category: ai-infrastructure · status: active · rev 1

An open, multiplayer agent harness for organizations: every employee and Slack room gets a scoped workspace (separate memory, files, permissions, sandbox),…

- Open source: yes (MIT)
- Self-hostable: yes
- Pricing model: free
- Best for: Startups whose employees each need isolated agent workspaces that also collaborate via Slack and the web.
- Last verified: 2026-09-04

- **Canonical:** https://gtmstacker.com/registry/tool/quartermaster-qm/
- **Source:** [github · yc-software/qm](https://github.com/yc-software/qm)
- **Tags:** ai-infrastructure, agent-ops, multiplayer, self-hostable
- **Repository:** https://github.com/yc-software/qm

## Is Quartermaster (QM) open source?

Yes — MIT-licensed.

## How much does Quartermaster (QM) cost?

It is free to use.

## Can I self-host Quartermaster (QM)?

Yes — it can be self-hosted.


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An open, multiplayer agent harness for organizations: every employee and Slack room gets a scoped workspace (separate memory, files, permissions, sandbox), with shared skills, admin-gated promotion, crons/background watches, and one-command deploy to Fly/AWS. Model-agnostic (Claude/Codex/OpenCode).

## Provenance

- MIT independently verified (14.5k★). Published under the yc-software org; official Y Combinator affiliation not independently confirmed. Layered security postures (Strict/Auto/Dangerous).
- Surfaced via the GTM Stacker X/Twitter signal reports (Aug–Sep 2026); license independently WebFetch-verified 2026-09-03.