[Bug]: Gemini API returns 400 error: Unknown name "additionalProperties" in function calling

[Whit3knight]

Bug Description

When using Google Gemini as provider with function calling enabled, Memoh sends JSON Schema containing "additionalProperties" field which Gemini API does not support.

Steps to Reproduce

1. Configure provider as Google Gemini
2. Enable a bot with function calling/tools
3. Send a message that triggers tool use

Error Messages / Logs

stream failed: api error 400: Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[0].parameters.properties[0].value.items.properties[2].value.items': Cannot find field. Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[0].parameters.properties[0].value.items': Cannot find field. Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[0].parameters': Cannot find field.

Version

Memoh-Local-v0.12.0

Model Used

gemini-3.1-flash-lite / gemini-2.5-flash

Channel

Telegram

Additional Context

No response

Contributing

• I would like to submit a pull request to fix this bug

[Whit3knight]