Issue with HTTP Request Tool

[Andrea_Santaniello]

I’m trying to retrive a json from out backend, this json contains a list of doctors from our platform. The node fails with “Received tool input did not match expected schema” whitout any additional feedback. It’s a simple unauthenticated GET request (I have copied an example output to pastebin if you want to try it out).

Any idea?

Workflow

Last node output

Item Index

0

Node type

@n8n/n8n-nodes-langchain.openAi

Node version

1.5 (Latest)

n8n version

1.61.0 (Self Hosted)

Time

4/10/2024, 17:57:58

Stack trace

NodeOperationError: Received tool input did not match expected schema at Object.router (/usr/local/lib/node_modules/n8n/node_modules/@n8n/n8n-nodes-langchain/dist/nodes/vendors/OpenAi/actions/router.js:86:19) at processTicksAndRejections (node:internal/process/task_queues:95:5) at Object.execute (/usr/local/lib/node_modules/n8n/node_modules/@n8n/n8n-nodes-langchain/dist/nodes/vendors/OpenAi/OpenAi.node.js:16:16) at Workflow.runNode (/usr/local/lib/node_modules/n8n/node_modules/n8n-workflow/dist/Workflow.js:722:19) at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/WorkflowExecute.js:711:51 at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/WorkflowExecute.js:1141:20

• n8n version: latest (1.61.0)
• Database (default: SQLite): postgres
• n8n EXECUTIONS_PROCESS setting (default: own, main): main
• Running n8n via (Docker, npm, n8n cloud, desktop app): docker
• Operating system: linux (ubuntu 22)

[Andrea_Santaniello]

Update, this only happens with the OpenAI block. Using the AI Agent block does not have anby issue

[ria]

Hi @Andrea_Santaniello

Thanks for posting here and welcome to the community!

This sounds like a bug! Thanks so much for reporting.
Will post here when it got fixed

[Andrea_Santaniello]

If you need more details for debugghing let me know. The issue is no happening when using the AI Agent block, same HTTP requests and logic.

[Morriz]

Same here, n8n seems not able to infer schema and tools call does not include parameters? Where can we control the tools call / function interface between AI Agent and a workflow tool?

[jan]

New version [email protected] got released which includes the GitHub PR 11201.