/Tech1d ago

LangChain Fleet Lets AI Agents Run Autonomous Loops Via Triggers

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Caspar Broekhuizen
Harrison Chase#780
Original postHarrison Chase#780
Caspar Broekhuizen@caspar_br

What are loops, and how do you build one?

A "loop" is the repeated process where some event or input kicks off an action. For example: 1. CI fails -> you fix it 2. CI fails again -> you fix it 3. CI passes -> merge

That loop resolved in three iterations. Others may run much longer, but every loop begins the same way: with a trigger. Therefore, building effective loops starts with designing good triggers

In Fleet, we don't make you define loops directly. You create one (often without realizing it) whenever you connect a recurring trigger to an agent. A trigger can be an event, like a daily 9am alert, or an input, like an email

When a trigger fires, your agent gets the full input as context (the email, Slack thread, or whatever kicked it off). For scheduled triggers, you provide the context yourself: what the agent should do, and which skills it should use

Made a quick video to show these features off. You can start building loops in Fleet today http://fleet.langchain.com

Peter Steinberger 馃@steipete

Here鈥檚 your monthly reminder that you shouldn鈥檛 be prompting coding agents anymore.

You should be designing loops that prompt your agents.

8:04 AM 路 Jun 9, 2026 路 49.9K Views
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Users are positive about LangChain Fleet enabling AI agent loops with scheduled triggers, viewing it as meaningful progress beyond traditional cron jobs.

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Harrison Chase@hwchase17

loops are great because its just ai running in the background

"triggers" are the way we kick those off in fleet

Caspar Broekhuizen@caspar_br

What are loops, and how do you build one?

A "loop" is the repeated process where some event or input kicks off an action. For example: 1. CI fails -> you fix it 2. CI fails again -> you fix it 3. CI passes -> merge

That loop resolved in three iterations. Others may run much longer, but every loop begins the same way: with a trigger. Therefore, building effective loops starts with designing good triggers

In Fleet, we don't make you define loops directly. You create one (often without realizing it) whenever you connect a recurring trigger to an agent. A trigger can be an event, like a daily 9am alert, or an input, like an email

When a trigger fires, your agent gets the full input as context (the email, Slack thread, or whatever kicked it off). For scheduled triggers, you provide the context yourself: what the agent should do, and which skills it should use

Made a quick video to show these features off. You can start building loops in Fleet today http://fleet.langchain.com

1dViews 10.9KLikes 58Bookmarks 48
Blissy@BlissyOnX

@hwchase17 so ci failures are just ambient background music now?

1dViews 6Likes 1
@valerii_arch@valeriibo

@hwchase17 cron jobs walked so agent loops could run wild

1dViews 8
Yassin@yelf_fafa

@hwchase17 the loop is the easy part, triggers are where it gets real, knowing when to fire skills AND when not to is the whole game in my experience

1dViews 7
Invincible@InvincibleEdge

@hwchase17 so triggers are just scheduled chaos with extra steps

still better than manually yelling at CI every morning

1dViews 6
Rugbist@rugbist_

@hwchase17 triggers sound clean but actually naming them is always the painful part

1dViews 5