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OpenProse

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An open-source operating system for reliable long-running agents

P26·Spring 2026·B2B·San Francisco, CA, USA; Remote·Team of 3·Founded 2026
Website ↗YC page ↗LinkedIn ↗Twitter ↗GitHub ↗

About

OpenProse is building open-source infrastructure for long-running AI work: a declarative language plus a reactive harness/runtime for reliable agent workflows.

Founders

  • Dan Barrett· Founder/CEO

    Software engineer of 12 years, agent developer of 5 years, two time founder. Creator of OpenProse.

    LinkedIn ↗Twitter ↗

Change history · 23 recorded

  1. August 30, 2026
    • Founder profile updated08:01 PM
    • YC partner updated08:01 PM
  2. August 16, 2026
    • YC partner updated08:01 PM
    • Founder profile updated08:01 PM
  3. July 16, 2026
    • Description rewritten07:00 PM
  4. June 21, 2026
    • Founder profile updated08:01 PM
    • YC partner updated08:01 PM
    • Location updated07:00 PM
    • Regions updated07:00 PM
  5. June 16, 2026
    • Location updated07:00 PM
    • Regions updated07:00 PM
  6. June 14, 2026
    • Location updated07:00 PM
    • Regions updated07:00 PM
  7. June 12, 2026
    • Location updated07:00 PM
    • Regions updated07:00 PM
    • Description rewritten07:00 PM
    • Pitch updated07:00 PM
  8. June 7, 2026
    • Regions updated07:00 PM
    • Location updated07:00 PM
  9. June 4, 2026
    • Description rewritten07:00 PM
    • Location updated07:00 PM
    • Regions updated07:00 PM
    • Pitch updated07:00 PM