[Bug] AI Chat does not call the mcp chart tool, such as quickchart or antvis/mcp-server-chart

[928871247]

Contact Information

No response

MaxKB Version

v1.10.8-lts

Problem Description

Although this tool has been configured on AI Chat and the prompt words also require the use of this tool, the tool of the Quickchart mcp server or antvis/mcp-server-chart will not be called. Besides, the tools of dbhub work fine. And the mcp server work fine on cherry studio.

Steps to Reproduce

LLM

Qwen3-32B

System role

Create chart through the mcp server tool.

Prompt

{{Start.question}}

Question

{
    "success": true,
    "data": {
        "rows": [
            {
                "bqsdr": "10003",
                "total_orders": 11
            },
            {
                "bqsdr": "10001",
                "total_orders": 11
            },
            {
                "bqsdr": "10000",
                "total_orders": 9
            },
            {
                "bqsdr": "10008",
                "total_orders": 9
            },
            {
                "bqsdr": "10010",
                "total_orders": 7
            }
        ],
        "count": 5
    }
}

Response

Okay, let's see. The user provided some data with bqsdr codes and total orders. They want a chart generated. The available tools include bar, column, pie, etc. Since the data is comparing different categories (bqsdr) with their order counts, a bar or column chart would be suitable. The data has 'bqsdr' as categories and 'total_orders' as values. The generate_bar_chart function can take category and value fields. Let me check the parameters: data needs category and value. The example uses 'category' and 'value' keys. So I'll map 'bqsdr' to category and 'total_orders' to value. Also, set titles for axes. Maybe a bar chart is better for horizontal comparison. Let's use generate_bar_chart with the data provided.

The expected correct result

Call the tool and return the link.

Related log output

Additional Information

No response

[liqiang-fit2cloud]

It depends on LLM and MCP service, just try to change another LLM or MCP service.
Refer to https://blog.fit2cloud.com/?p=429095f3-2837-4be6-afa0-d5f9b26f07dc

[928871247]

我调整了一下 VLLM 的设置之后，在简单的提示词时，能成功调用工具了。但是在很复杂步骤的提示词里面，依旧存在问题。查阅了一些文章之后，确实很可能是 Qwen3 模型的问题。
https://huggingface.co/Qwen/Qwen3-235B-A22B/discussions/20

[shaohuzhang1]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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After I adjusted the settings of VLLM, I was able to successfully call the tool when I had a simple prompt word. However, there are still problems in the prompt words for very complicated steps. After reviewing some articles, it is indeed very likely that it is a problem with the Qwen3 model.
https://huggingface.co/Qwen/Qwen3-235B-A22B/discussions/20