herdr
herdr is a YC Fall 2026 (F26) company. Based in Ankara, Ankara, Turkey. Team of 1.
About herdr
Summary
herdr builds an open-source agent runtime for developers running fleets of coding agents across multiple machines. A persistent background server owns each agent's terminal session, keeping work alive through disconnects, closed laptops, and dropped SSH connections. Developers get a unified attention queue showing every agent's status, working, blocked, or done, across all projects, and can reconnect from any device without losing progress.
Business model
Apache-2.0 open-source core with a community plugin marketplace.
Go-to-market
Developers install herdr directly via a one-line shell command, a Homebrew formula, Nix, or Windows installer, making adoption fully self-serve. A CLI, socket API, and a community plugin marketplace extend the runtime for teams building on top of it.
From the Y Combinator listing
building the open agent runtime
Developers don't run one coding agent anymore. They run fleets of them — for hours, sometimes days — across laptops, servers, and sandboxes. Keeping track of that work is the new bottleneck: which agent is blocked, which one finished, which terminal is it in, and why did everything die when the laptop closed. Herdr is the open-source home for that work. A background server owns the agents' terminal sessions on each machine, so the work survives disconnects, closed lids, and dropped SSH. Herdr detects each agent and turns the chaos into an attention queue — working, blocked, done, across every project — so you look only when an agent needs you. Every client is just a view: the bundled terminal UI, SSH from another machine, your phone. Close one, open another; the work never stops. Software can drive it too: a CLI, a socket API, and a plugin marketplace that passed 500 community plugins in its first month. The runtime is Apache-2.0 and stays open. Four months after launch: 25k GitHub stars, 340k downloads.
Facts
- B2B / B2B -> Engineering, Product and Design
- Ankara, Ankara, Turkey
- 1
- Active
- Early
Founders (1)
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