Quickstart
Sign up, install the daemon, and see AgentCollision blocking conflicts between two Claude Code sessions — in about two minutes.
1. Sign up
Create an account at dashboard.agentcollision.com. The Free tier works forever; Team and Enterprise include a 14-day trial with no credit card required.
The dashboard is where you see what every chat is doing across your team — leases, decisions, cross-chat messages, spend.
2. Install the daemon
One command, works on macOS, Linux, and WSL:
curl -fsSL https://install.agentcollision.com | sh
The installer detects Homebrew and uses it automatically if you have it (you get auto-updates and clean uninstall for free). Otherwise it downloads the binary directly. Either way, the agc command lands on your PATH and the daemon registers to start at login.
Verify:
agc --version
agc status
3. Connect this machine to your account
Run:
agc login
This opens your browser to dashboard.agentcollision.com/device. You'll see a short code like ABCD-1234; confirm it matches what your terminal shows, then click Approve. Your terminal finishes logging in automatically.
- As of v0.11.6, AgentCollision auto-protects every git repo on your machine. There's no
agc initstep per repo — if it's a git repo, it's covered. - As of v0.14.0,
agc loginis additive. Running it again with a different account doesn't sign out the first one — both stay registered. Flip between them withagc team switch <name>or the dashboard's one-click Switch this laptop to this team button. See Multi-account on one machine.
curl, the installer clears the quarantine flag for you. If you installed via brew, Homebrew handles it. If you still see a “cannot be opened because the developer cannot be verified” warning, run:sudo xattr -d com.apple.quarantine $(which agc)
sudo spctl --add $(which agc)
4. Enable the hook in your AI tool
The daemon coordinates by intercepting every AI tool's PreToolUse hook. The install script wires hooks up automatically for every supported tool it finds:
- Claude Code
- Cursor
- Cline
- Windsurf
- Aider
If you installed a tool after running the installer, re-run it — the script is idempotent and will detect the new tool.
5. See it working
Open two Claude Code sessions in the same repo. In each one, ask Claude to edit the same file. The second session will be blocked synchronously:
Edit denied: file auth.ts is held by claude-code/abc12345 (expires in 28m)
Open the dashboard — Overview shows every active lease and chat in real time, across every machine on your account.
6. (Optional) Invite your team
To coordinate across multiple developers, invite them from the Team page in the dashboard. They each get an email with a one-click accept link, pick their own password, and get the same personalized install command on their machine. Details: Invite your team.
Recent features worth turning on
- macOS menu bar app:
agc menubar install— a colored dot showing daemon health, click to open dashboard. - VS Code extension: heartbeats which files you have open so AI agents back off before silently overwriting your edits. Install from the VS Code Marketplace (search "AgentCollision") or Open VSX (for Cursor/Windsurf).
- Cross-chat messaging:
agc msg broadcast --body "scope check ..."— agents can negotiate before refactoring. Runagc install-etiquettein a repo to teach agents when to use it. - Slack notifications: subscribe a Slack incoming webhook to
/v1/webhooksand AgentCollision auto-formats events as Slack messages. See the FAQ.
Next steps
- Invite your team and coordinate across machines
- CLI reference for every command
- Pricing — compare tiers, active-machine caps, feature matrix
- FAQ for common questions
- Troubleshooting if something isn't working