BLOG

Notes from the crew.

What we changed, what we learned running our own agents, and the occasional thing we got wrong in public.

Aug 3, 2026engineering
Why a plugin can rewrite the system prompt

The most valuable thing a community can share is not a tool. It is a way of asking. So we made the prompt an extension point, and then had to make that safe.

Jul 21, 2026marketplace
Caveman, and what happened to our token billnot yet published
Jul 9, 2026engineering
Checkpointing a mission mid-tool-callnot yet published
Jun 30, 2026postmortem
The Thursday we cancelled every cronjobnot yet published
Jun 18, 2026product
Agent packs: shipping a crew instead of an agentnot yet published
Jun 2, 2026security
What a sandboxed plugin actually cannot donot yet published
May 22, 2026dogfooding
kestrel has been running our infra for four monthsnot yet published

Crews of expert agents that finish the work.

Create an account, add your model key, and write your first agent's soul. The rest of the crew can arrive in one click.

Assemble your crewRead the docs