trigr 1.2.1

Event system for AI CLI agents

trigr

Make any AI coding agent autonomous.

AI coding agents like Claude Code are reactive. They only do something when prompted.

OpenClaw changes that by running agents in the background, but it's a full platform you have to self-host, with known security risks around exposed instances and malicious plugins.

trigr bridges this gap through a simple trigger system. It lets the agent wait for events to autonomously run tasks when something happens. Once it's done, it goes back to sleep until the next event.

Quickstart

1. The agent starts trigr as a background command.

uvx trigr watch
# trigr server runs on port 9374 (default)

2. An external event is emitted.

uvx trigr emit "New GitHub issue opened: #1337 - Please triage."

3. The agent wakes up and runs the task.

Install

uv tool install trigr

Triggers

We currently support 3 types of triggers: messages, CRON jobs, and pollers.

Messages (External Triggers)

You can send messages from another terminal, script, or the agent itself.

trigr emit "New GitHub issue opened: #1337 - Please triage."

You can delay messages too, if you want the agent to wait before acting.

trigr emit "Check if the deployment ran successfully and fix if needed." --delay 20m

CRON Jobs (Scheduled Triggers)

CRON jobs run at a specific time schedule.

trigr add daily-news --cron "0 9 * * *" --message "Retrieve the top 5 trending hacker news stories."

You can also prompt the agent to run a command and use its output as the message.

trigr add daily-news --cron "0 9 * * *" --command "python daily_news.py"

Instead of using the CLI, you can also define cron jobs in trigr.toml.

[crons.daily-report]
cron = "0 9 * * *"
command = "echo 'time for the daily report'"

Pollers (Interval Triggers)

Pollers run at regular intervals, like every 5 minutes to check your email.

trigr add email-response --interval 300 --command "./check_email.sh"

If a command prints nothing, no message is created. Pollers silently skip cycles when nothing is new.

[pollers.check-inbox]
interval = 60
command = "./check_mail.sh"

Commands

Command	What it does
trigr watch [--timeout 300]	Block until message, print it, exit
trigr emit "msg" [--delay 10s]	Send a message
trigr add <name> --interval N -m "msg"	Add a poller with a static message
trigr add <name> --cron "..." -c "cmd"	Add a cron job with a command
trigr status	Show server state
trigr init	Create trigr.toml (auto-created on first use)
trigr serve [-f]	Start server manually

Agent Compatibility

Agent	How trigr watch runs	Chat while waiting?
Claude Code	Background task	Yes
Codex CLI	Blocking call	No
Gemini CLI	Blocking call	No

License

MIT