Building the future of
software development
kill9 is an AI development platform that lets teams ship features end-to-end with agents — from planning to production. We believe the best software gets built when developers focus on what matters and agents handle the rest.
# what we believe
Ship, don't plan to ship
The best plans are the ones that turn into working software. We optimize for code in production, not slides in a deck.
Agents as teammates
AI that works alongside you, not instead of you. You set the direction, agents handle the execution.
Transparency by default
Every decision an agent makes is visible, reviewable, and reversible. No black boxes.
Your tools, your way
Bring your own models, your own repos, your own workflows. We integrate with what you already use.
Built for builders
We're developers building for developers. Every feature exists because we needed it ourselves.
Speed is a feature
Fast agents, fast UI, fast deploys. We're obsessive about removing friction from the development cycle.
We're a small team of engineers who got tired of spending more time in meetings than in code. kill9 started as an internal tool to automate our own development workflow — and it worked so well we decided to share it.
We're backed by people who believe in the future of agent-driven development.