# Tool in MCP Client are not being called

**URL:** <https://community.n8n.io/t/tool-in-mcp-client-are-not-being-called/133502>\
**Category:** Questions\
**Created:** [June 16, 2025, 3:18pm UTC](https://community.n8n.io/t/tool-in-mcp-client-are-not-being-called/133502 "2025-06-16T15:18:44Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![fabricabenedicta](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/fabricabenedicta/32/91186_2.png) [@fabricabenedicta](https://community.n8n.io/u/fabricabenedicta)\
**Post date:** [June 16, 2025, 3:18pm UTC](https://community.n8n.io/t/tool-in-mcp-client-are-not-being-called/133502/1 "2025-06-16T15:18:44Z")

</div>

## Describe the problem/error/question

I’m building an AI Agent workflow that uses an **MCP Client Tool** to call a Home Assistant MCP that has tool called `HandleChat`. I’ve followed all the documentation:

- The MCP Client is connected correctly with SSE and authentication.
- `HandleChat` is selected as the tool to include.
- A `Structured Output Parser` is connected to the AI Agent with the correct schema.
- The `Ollama Chat Model` is also connected and working fine.
- The AI Agent generates the correct JSON output — I can see it in the logs.

**The problem is: the AI Agent never actually _invokes_ the MCP Client tool** , even though the output format is correct and matches the tool name and structure.

## What is the error message (if any)?

There is no error — but in every run I get the message:

```
“None of your tools were used in this run. Try giving your tools clearer names and descriptions to help the AI”

```

Even though the tool is clearly named HandleChat, properly described, and included in the list.

## Please share your workflow

```auto
![image|690x368](upload://gTlT07fDpGDfFPsmlxHZenFIzuj.png)

```

## Share the output returned by the last node

This is the output from the AI Agent after parsing, which should trigger the tool:

{  
“tool”: “HandleChat”,  
“input”: “Turn on corner torche”  
}

## Information on your n8n setup

- **n8n version:** 1.94.1
- **Database (default: SQLite):** SQLite
- **n8n EXECUTIONS\_PROCESS setting (default: own, main):** own
- **Running n8n via (Docker, npm, n8n cloud, desktop app):** Docker
- **Operating system:** Fedora 42

---

<div class="post-metadata">

**Author:** ![system](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/system/32/195824_2.png) [@system](https://community.n8n.io/u/system)\
**Post date:** [September 14, 2025, 3:18pm UTC](https://community.n8n.io/t/tool-in-mcp-client-are-not-being-called/133502/2 "2025-09-14T15:18:47Z")

</div>

Closed on September 14, 2025, 3:18pm UTC

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