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.


MCP Function Generator Snap dialog

  • This is a Transform-type Snap.

Prerequisites

  • A valid MCP Account with required fields provided.

Snap views

Type Description Examples of upstream and downstream Snaps
Input This Snap has one document input view.
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.
Learn more about Error handling.

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