Y COMBINATOR OPEN-SOURCES QM: AN MIT-LICENSED MULTIPLAYER AGENT HARNESS THAT RUNS IN SLACK AND THE WEB

Y Combinator has open-sourced QM, the multiplayer agent harness it uses internally across accounting, legal, events, and engineering. Released July 31, 2026 under an MIT license, QM gives each employee an isolated workspace and each Slack room its own scoped memory, files, keychain view, permissions, crons, web apps, and durable sandbox.

MarkTechPost reports that y Combinator has open-sourced QM, the multiplayer agent harness it uses internally across accounting, legal, events, and engineering.

The report adds: Released July 31, 2026 under an MIT license, QM gives each employee an isolated workspace and each Slack room its own scoped memory, files, keychain view, permissions, crons, web apps, and durable sandbox.

Pi, OpenCode, Codex, and Claude Code all drive the same headless core, so deployments avoid vendor lock-in.

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