Your Organization’s administrator (or you, if you have admin rights) has already set up a third-party MCP Connector.
It’s now time to use it in your conversations with le Chat!
Using the MCP Connector in le Chat
1. Enable the Connector as a tool
As with first-party Connectors, you must first enable the Custom Connector as a tool for your current conversation:
In le Chat, click the
Toolsbutton or the “4 squares” icon (1), located below the chat input box (alternatively, you can also invoke your Connector by typing/Connector_Namein the chat input box).Locate the
Connectorssection, where your Connector should be listed, and ensure its checkbox is selected (2).
Selecting a Custom Connector as a tool in le Chat
2. Make a request
Ask a question or give a command in natural language that relates to the purpose of the Connector.
📌 For example: What’s the status of ticket #12345 in our helpdesk?
3. Review and approve the action
Le Chat will understand your request and identify the correct Connector function (see 🔎 What are functions? below) that needs to be executed.
Before it runs the function, it will present an overview of the proposed action, including the function name (1) and the arguments/parameters (2) it has identified, and will ask for your confirmation.
🔑 This is a security measure to ensure you stay in control. A Connector cannot read or modify your data without your explicit approval (unless it has been configured to do so by your administrator, or if you have previously “always allowed” it—see below)
At this point, you have three choices:
Always Allow(3): Approve the action for this time and automatically approve all future requests to use this specific function.Decline(4): Prevent the action from running.Continue(5): Approve the action for this one instance only.
A running query waiting for approval
🔑 If you have “always allowed” a function, le Chat will automatically execute it every time without asking for your approval. You may configure this behavior in the Connectors modal (see 🔎 this article for more information)
4. Wait for the result
Once you approve the action, le Chat will execute the function and display the result in the chat.
You are now free to continue your conversation as usual and ask follow-up questions (you can switch off the Connector if you don’t need it anymore).
A running query waiting for approval
5. Provide Feedback (Optional)
After an action is proposed or executed, you are encouraged to provide feedback using the thumbs up/down icons (👍 / 👎). This helps improve the model’s accuracy. You can give feedback on:
Was the right connector identified?
Was the right function within that connector identified?
Were the parameters it extracted from your request correct?
This feedback loop is crucial for refining how le Chat interacts with your custom tools.
Next Steps
Along with Connectors, we recommend you also explore le Chat’s Libraries, which allow you to upload and use your own documents in your conversations.
Additional Resources
Security Considerations
Mistral le Chat can only reach what you’ve granted permission to, but you should still:
Only connect to trusted servers built and hosted by organizations you know.
Read the requested permissions carefully during sign-in. Limit scopes where possible and deny anything that feels unnecessary.
Keep an eye on the actions le Chat is taking so nothing destructive or unintended happens.
Review le Chat’s tool approval prompts carefully, and use “Allow always” only for servers and tools you fully trust to run unsupervised.
In the Connectors modal, turn off any tools that aren’t relevant to the current conversation or that you don’t want Mistral le Chat to use.
What are "Functions"?
Each Connector comes with a set of Functions, which are the specific actions the Connector can perform. These can be:
Read Events: Actions that retrieve information from your Connector, like "
get the status of my latest support ticket" or "find my last three emails from John Smith."Write Events: Actions that ask your Connector to execute a task, like "
create a new page in our wiki" or "send a summary email to my team."
🚨 The functions available from a Connector’s server can be updated by you at any time (see 🔎 this article for more information). For this reason, you should only create and use Custom Connectors for servers that your organization trusts and manages.
🔎 Administrators can consult the list of available functions for a given Connector and individually opt to always allow any of them. See Managing my MCP Connectors for more information.