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cLangChainMCPClient

Connects and communicates with MCP servers using Large Language Models (LLMs).

Information noteNote: This component is available only if you have installed the R2025-10 Talend Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.

Standard properties

These properties are used to configure cLangChainMCPClient running in the Standard Route framework.

The Standard cLangChainMCPClient component belongs to the AI family.

Basic settings

Properties Description
Transport / Type Select the transport type from:
  • Stdio: The STDIO (Standard Input/Output) transport method launches an MCP server as a sub-process and communicates with it through standard input/output streams. This method is most suitable for local execution.
  • Streamable HTTP: The Streamable HTTP transport replaces the traditional HTTP+SSE transport for remote MCP server communication. It operates over HTTP/HTTPS and allows for more flexible server implementations.
    Information noteNote: This option is available only if you have installed the R2025-12 Talend Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.
  • SSE: The SSE (Server-Sent Events) transport method establishes a persistent connection with the MCP server over HTTP using SSE for streaming communication. This method is suitable for remote execution.
Executable (for Stdio transport type only) Enter the path to the executable on your local file system to launch the MCP server.
Arguments (for Stdio transport type only) Enter the arguments for the executable as needed.
Event Streaming URL (for SSE transport type only) Enter the URL of the MCP server.
Timeout(s) (for SSE transport type only) Set a timeout period for the connection to the MCP server in seconds.
Connection

Select the cLangChainConnection component that connects to the language model.

Advanced settings

Properties Description
Environments (for Stdio transport type only) Set the environment variables in the table. Click [+] as many times as required to add parameters to the table. Then click the corresponding Value field and enter a value.

Log Events (for Stdio transport type only)

 Select this checkbox to log the communications with the MCP server.
Headers (for SSE and Streamable HTTP transport types only) Click the [+] button to add lines as needed and define the key and value for HTTP headers. For example, to include authentication information for MCP requests, you can add a line with Authorization in the key field and your credentials in the Value field.
Information noteNote: This option is available only if you have installed the R2025-12 Talend Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.
Log Requests (for SSE and Streamable HTTP transport types only) Select this checkbox to log requests to the MCP server.
Log Responses (for SSE and Streamable HTTP transport types only) Select this checkbox to log responses from the MCP server.

Usage

Usage guidance Description

Usage rule

cLangChainMCPClient can be a middle or end component in a Route. It has to be used with the cLangChainConnection component, which creates a connection to the language model. For more information about cLangChainConnection, see cLangChainConnection.

Limitation

 n/a
Related tasks

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