Triggers are not the product

Starting a graph is the easy half. Cron is a solved problem. A webhook is a solved problem. client.run() is a solved problem. None of those tell you what happens when step four dies at 2am, or when Tuesday's run needs a fact that Monday already learned.

We keep seeing teams treat the trigger as the product. The demo is a button that kicks off a loop. The hard work shows up later: a worker that has to come back, a record of what each node saw, a way to call one node again without paying for the ones that already succeeded.

That work is not glamorous, and it is not optional. If you skip it, every failure becomes a full re-run. Every fact becomes a sentence stuffed back into the next system prompt. Every code node becomes a process you babysit.

Linea takes the trigger and then does the part the trigger does not cover. The host stays up. The checkpoint gets written. The next execution can read what the last one knew. Starting the graph is not the product. Operating the agent after it starts is.

If you already have a way to start the graph, you do not need another one. You need the run to remember what it saw.