What is kill9?
kill9 is an agent-driven development app. It helps you plan, implement, test, review, and document software work with specialist AI agents.
What should I do first?
Follow Start from zero.
The short version:
- Install kill9.
- Connect a model provider.
- Open a workspace.
- Ask kill9 to explain the workspace.
- Start one small task.
Which platforms are available?
macOS Apple Silicon, macOS Intel, and Linux x64 release candidate builds are available now.
Windows is coming soon.
Do I need an API key?
Yes for most agent work. kill9 uses bring-your-own-key model access.
Read Connect model providers.
Which agent should I use?
Use k9 if the task has multiple phases. Use a specialist if the task is already clear.
Examples:
- kdev for code.
- ktest for tests.
- kpm for requirements.
- karch for architecture.
- kdoc for documentation.
- khelp for product questions.
Read Agents.
What integrations are available?
Available now:
- GitHub.
- Linear.
- Jira.
- Sentry.
- Telegram.
Coming soon:
- Datadog.
- Slack.
- GitLab.
Read Integrations.
Is my code sent to the cloud?
It can be. When an agent needs model reasoning, relevant prompts, code excerpts, tool output, and document context may be sent to the configured model provider.
Read Security and privacy.
Can kill9 make code changes automatically?
Agents can propose and make bounded changes when you ask them to. You should still review plans, changes, tests, and release actions.
Where do I upgrade?
Open Settings -> Billing inside the app.
Read Plans and limits.