Qwen3 model doesnt send requests to mcp-atlassian MCP server

Questions
1

Hello everyone,

problem/question

I’ve encountered an interesting issue while working with MCP servers, and I’m hoping someone can explain what’s happening or suggest a fix.

When using mcp-atlassian ( GitHub - sooperset/mcp-atlassian: MCP server for Atlassian tools (Confluence, Jira) ) with the Qwen3 model, the AI agent fails to interact properly with the MCP server.

For example, when I ask the model “what can you do?”, it correctly detects that a tool is connected. However, when I request something like “show task ABC-123”, no request is actually sent to the MCP server — there’s no trace of any call in the logs.

Interestingly, when I connect another MCP server — GitHub - nguyenvanduocit/jira-mcp: A Go-based MCP (Model Control Protocol) connector for Jira that enables AI assistants like Claude to interact with Atlassian Jira. This tool provides a seamless interface for AI models to perform common Jira operations including issue management, sprint planning, and workflow transitions. - everything works as expected.

Additionally, when using ChatGPT, both MCP servers (mcp-atlassian and jira-mcp) work correctly.

Has anyone faced a similar issue or found a workaround for this behavior? Any insights would be greatly appreciated.

Thanks in advance!

Please share your workflow

Information on your n8n setup

  • n8n version: 1.119.0
  • **Database (default: SQLite):**SQLite
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
  • Operating system: ubuntu 24.04.3

Information on your softvare setup

2

It sounds like the Qwen3 model might have compatibility issues with the `mcp-atlassian` server, as it works fine with `jira-mcp`. Here’s what you can try:

- Verify the MCP server logs to ensure it’s properly initialized and connected.

- Check if Qwen3 supports the specific tool calls required by `mcp-atlassian`, as highlighted in [levelup.gitconnected.com](How-To Use Qwen3 with MCP and Tool-Use via Ollama (Locally) | by Md Monsur ali | Level Up Coding).

- Consider using a different MCP server like `jira-mcp` for now, as it seems to work seamlessly with Qwen3.

Let me know if you need further troubleshooting steps!