Pain point · Integrations · Blocks work
MCP Client Tool errors with any Gemini model but works with GPT-4o
4 source threads · first seen 2025-03 · last seen 2026-01
Summary
With a Gemini model the workflow errors on the model, while swapping to GPT-4o makes the same MCP workflow work perfectly.
- Workaround
- Switch the model to GPT-4o
- Switched to or considered
- GPT-4o
Evidence
Excerpts are copied word for word from the source; follow the link to read it in full.
“Since updating to the 2. version we have a lot of issues with Agent Nodes using the Gemini models”
“Newer Gemini models (e.g., gemini-2.5-flash-preview) fail with 'Cannot read properties of undefined (reading 'content')' when tools are connected”
“When using MCP Client Tool with any Gemini model (either palm or vertex), the workflow errors on the Model”
“When using Google Gemini 2.0 Flash 001 in the AI Agent, it is unable to call the tools”