AI Agent action list wrongly format

[thu2004]

Bug Description

When the SQL Agent create the system prompt the action list is wrongly formatted.

Thought: you should always think about what to do
Action: the action to take, should be one of [["query-sql","info-sql","list-tables-sql","query-checker"]]

To Reproduce

Create a AI Agent and send a chat message. See the picture belov

Expected behavior

When the SQL Agent create the system prompt the action list should be like this

Action: the action to take, should be one of ["query-sql","info-sql","list-tables-sql","query-checker"]

I already identified the issue in langchain and a PR have been merged and released in version 0.3.13

langchain-ai/langchainjs#7510
https://github.com/langchain-ai/langchainjs/releases/tag/0.3.13

You need to update the langchain version in file https://github.com/n8n-io/n8n/blob/master/packages/%40n8n/nodes-langchain/package.json

Operating System

Ubuntu and Docker

n8n Version

1.76.1

Node.js Version

Node provided by Docker image

Database

PostgreSQL

Execution mode

main (default)

[Joffcom]

Hey @thu2004,

We have created an internal ticket to look into this which we will be tracking as "GHC-647"