Error Using Google Sheets Tools with AI Agents: “Invalid ‘tools[1].function.name’”

[alvarosp1]

Hi community,

I’m trying to use Google Sheets tools with an AI agent in n8n, but I keep getting this error:

Bad request - please check your parameters  
Invalid 'tools[1].function.name': string does not match pattern. Expected a string that matches the pattern '^[a-zA-Z0-9_-]+

It seems that the function name for the tool doesn’t meet the required pattern. According to the error, valid names should only contain letters (a-z, A-Z), numbers (0-9), underscores (_), or dashes (-), and must avoid special characters like ñ, spaces, or accents.

I’ve tried different models and renamed functions, but the issue persists.

for example when i use Mistral AI it gives me this error:

API error occurred: Status 400 Content-Type application/json Body {"object":"error","message":"Function name was Añadir_o_Actualizar_fila but must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64.","type":"invalid_request_error","param":null,"code":null}

I know it’s in Spanish, but the name of the tool can’t be changed. it’s fixed.

Has anyone encountered this problem or found a solution? Any help would be greatly appreciated.

Thanks in advance!.

EDIT:

n8n version: 1.77.3 Running n8n via (Docker, npm, n8n cloud, desktop app): Digital Ocean