Simple Letta Chat

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "name": "Simple Letta Chat",
  "nodes": [
    {
      "parameters": {},
      "id": "8b5e4d7f-1a2b-3c4d-5e6f-7a8b9c0d1e2f",
      "name": "When clicking 'Test workflow'",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "operation": "sendMessage",
        "agentId": "={{ $json.agentId || 'agent-123' }}",
        "role": "user",
        "message": "Hello! Can you help me understand what you can do?",
        "additionalOptions": {}
      },
      "id": "9c6f5e8a-2b3c-4d5e-6f7a-8b9c0d1e2f3a",
      "name": "Letta",
      "type": "@letta-ai/n8n-nodes-letta.letta",
      "typeVersion": 1,
      "position": [
        470,
        300
      ],
      "credentials": {
        "lettaApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "jsCode": "// Extract the assistant's response from Letta\nconst messages = $input.item.json.messages || [];\n\n// Find the assistant message\nconst assistantMessage = messages.find(msg => msg.role === 'assistant');\n\nreturn {\n  response: assistantMessage?.text || 'No response',\n  allMessages: messages,\n  usage: $input.item.json.usage\n};"
      },
      "id": "a7d6c5b4-3e2f-4d5c-6b7a-8c9d0e1f2a3b",
      "name": "Format Response",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        690,
        300
      ]
    }
  ],
  "connections": {
    "When clicking 'Test workflow'": {
      "main": [
        [
          {
            "node": "Letta",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Letta": {
      "main": [
        [
          {
            "node": "Format Response",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "staticData": null,
  "tags": [],
  "triggerCount": 0,
  "updatedAt": "2025-01-07T00:00:00.000Z",
  "versionId": "1"
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• lettaApi

About this workflow

Simple Letta Chat. Uses @letta-ai/n8n-nodes-letta. Event-driven trigger; 3 nodes.

Source: https://github.com/letta-ai/n8n-nodes-letta/blob/6cf2d1da050c4c0deb9f2a57273f91721cef4936/demo/workflows/simple-chat.json — original creator credit. Request a take-down →

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