Ship safely at AI speed.
When multiple AI agents edit your codebase in parallel, coordination is the difference between shipping and silently breaking production. AgentCollision is the governance layer — one lightweight daemon that keeps every agent in sync, every edit safe, every merge clean.
brew install agentcollision && agc init
Your agents are racing. And you don’t know it.
Here’s what actually happens when parallel AI sessions edit the same codebase.
Chat B silently overwrites Chat A’s fix. No warning. You find out when CI goes red 40 minutes later.
Chat B is blocked until the lease releases. Both edits land cleanly. CI stays green.
How teams use it
Individual developers
Install once. Every Claude Code, Cursor, Cline, or Windsurf session on your machine gets automatic coordination. Free forever.
Install locally →Remote teams
Alice on her MacBook and Bob on his Linux box can coordinate across machines. The hosted coordinator tracks leases in real time.
Set up a team →Privacy-first
File paths are HMAC-hashed before leaving your machine. The coordinator never sees your code or directory structure.
How it works →What's new in v0.27
Human-presence leases
The VS Code extension heartbeats which files you have open. Any agent that tries to write to them is refused. The deepest local-only feature we ship — cloud orchestrators can't see your editor.
Learn more →Cross-chat messaging
Agents talk to each other directly via ac msg send / broadcast / inbox / reply. Same-machine, same-team, cross-org. Run ac install-etiquette to teach agents when to use it.
Webhooks & Slack
Subscribe external systems to lease, policy, and spend-cap events with HMAC-signed deliveries. Slack-incoming-webhook URLs auto-format as Slack messages — no relay process required.
Learn more →macOS menu bar
A colored dot showing daemon health, click to open the dashboard. One command to install: ac menubar install.
The dashboard
See every team member's active file edits, who's coordinating with whom, and catch conflicts before they happen.
Runs locally at localhost:7777 or hosted at dashboard.agentcollision.com.
Browse the docs
Quickstart
Sign up, install, and see it working in under two minutes.
CLI reference
Every ac command: leases, messaging, webhooks, menubar, presence, proxy.
FAQ
Common questions: pricing, privacy, tool compatibility, uninstall.
Team setup
Create a team, invite members, manage coordination policy.
Troubleshooting
Hook failures, daemon won't start, leases stuck in held state.