How do I connect Letta?

Add the Letta piece to a flow, then authenticate with Custom auth. Once connected, its 2 triggers and 4 actions are available anywhere in the builder.

What can I automate with Letta?

"New Agent" can start a flow that runs "Create Agent From Template", and you can chain Letta together with any of 770+ other apps and AI steps in between.

Can I self-host the Letta integration?

Yes. Activepieces is fully self-hostable, so you can run the Letta piece on your own infrastructure with your connections and your data staying in your environment.

Can my AI agent use Letta as a tool?

Yes. Every piece you connect can be exposed over one Activepieces MCP server, so Claude, Cursor, Windsurf or any MCP client can call Letta actions as tools.

Letta integration

Letta is the platform for building stateful agents: open AI with advanced memory that can learn and self-improve over time.

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Actions: 4
Triggers: 2
Auth: Custom auth
License: MIT, open source
Updated: November 2026

About the Letta integration

Add the Letta piece to a flow, connect your account once, and the rest of the builder can read from it and write to it. Because the piece is open source you can run it on our cloud or self-host it, and combine Letta with 770+ other apps in the same flow.

Triggers

Start a flow the moment something happens in Letta

Each trigger below can start a flow on its own, either instantly or on a schedule.

New Agent
Triggers when a new agent is created
New Message
Triggers when an agent replies (assistant message, or send_message on legacy agents)
1 field

Actions

Everything Activepieces can do in Letta

Drop any of these into a flow and fill in the fields. No code is required.

Create Agent From Template
Creates an agent from a template version (Letta Cloud only; uses Letta's deprecated templates endpoint)
7 fields
Create Identity
Creates a Letta identity. Letta Cloud no longer supports Identities; this only works on self-hosted Letta servers that still serve them.
5 fields
Send Message to Agent
Send message to an agent
3 fields
Get Identities
Searches for identities in your Letta Project. Letta Cloud no longer supports Identities; this only works on self-hosted Letta servers that still serve them.
5 fields

Use Letta in a flow

Connect Letta once and every trigger and action above is yours to drop into the builder, alongside 770+ other apps. Free to start, on our cloud or your own servers.

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Letta, answered.

Yes. Activepieces is open source and free to start, and the Letta piece is included on every plan, from the free cloud tier to any self-hosted deployment.