MCP Function Generator

Overview

Use this Snap to convert the tools available from an MCP server to a list of function definitions, with the additional ability to add "list resource" and "read resource" to the function definitions list.

Transform-type Snap

Prerequisites

A valid MCP Account with required fields provided.

Snap views


View	Description	Examples of upstream and downstream Snaps
Input	This Snap has one document input view.	Mapper
Output	The output contains a list (array) of tools or functions. Each item describes one function that can be used. The output schema includes a set of MCP functions, each with metadata (the MCP operation to perform) and a structured definition of what input parameters they expect.	Amazon Bedrock Converse API Tool Calling Azure OpenAI Tool Calling Google Gemini API Tool Calling OpenAI Tool Calling
Error	Error handling is a generic way to handle errors without losing data or failing the Snap execution. You can handle the errors that the Snap might encounter when running the pipeline by choosing one of the following options from the When errors occur list under the Views tab. The available options are: Stop Pipeline Execution Stops the current pipeline execution when an error occurs. Discard Error Data and Continue Ignores the error, discards that record, and continues with the remaining records. Route Error Data to Error View Routes the error data to an error view without stopping the Snap execution. Learn more about Error handling in Pipelines.

Snap settings

Legend:

Expression icon (): Allows using JavaScript syntax to access SnapLogic Expressions to set field values dynamically (if enabled). If disabled, you can provide a static value. Learn more.
SnapGPT (): Generates SnapLogic Expressions based on natural language using SnapGPT. Learn more.
Suggestion icon (): Populates a list of values dynamically based on your Snap configuration. You can select only one attribute at a time using the icon. Type into the field if it supports a comma-separated list of values.
Upload : Uploads files. Learn more.

Learn more about the icons in the Snap settings dialog.


Field / Field set	Type	Description
Label	String	Required. Specify a unique name for the Snap. Modify this to be more appropriate, especially if more than one of the same Snaps is in the pipeline. Default value: MCP Function Generator
Expose Tools	Checkbox	Required. Select to include tools available from an MCP server to be converted into a list function definitions. Default value: Selected
Expose Resources	Checkbox	Select to include two predefined tools: "read_resource" and "list_resources" into the list of function definitions to enable the LLM to list available resources and read the resources. Default value: Selected
Snap execution	Dropdown list	Choose one of the three modes in which the Snap executes. Available options are: Validate & Execute: Performs limited execution of the Snap and generates a data preview during pipeline validation. Subsequently, performs full execution of the Snap (unlimited records) during pipeline runtime. Execute only: Performs full execution of the Snap during pipeline execution without generating preview data. Disabled: Disables the Snap and all Snaps that are downstream from it. Default value: Validate & Execute Example: Execute only