Get tool version | Hume API

Fetches a specified version of a Tool.

Refer to our tool use guide for comprehensive instructions on defining and integrating tools into EVI.

Authentication

X-Hume-Api-Keystring

API Key authentication via header

Path parameters

• id string Required format: "uuid"

  Identifier for a Tool. Formatted as a UUID.

• version integer Required

  Version number for a Tool.

Tools, Configs, Custom Voices, and Prompts are versioned. This versioning system supports iterative development, allowing you to progressively refine tools and revert to previous versions if needed.

Version numbers are integer values representing different iterations of the Tool. Each update to the Tool increments its version number.

Response

Success

• created_on long

  The timestamp when the first version of this tool was created.

• id string

  Identifier for a Tool. Formatted as a UUID.

• modified_on long

  The timestamp when this version of the tool was created.

• name string

  Name of the built-in tool to use. Hume supports the following built-in tools:

• web_search: enables EVI to search the web for up-to-date information when applicable.

  • hang_up: closes the WebSocket connection when appropriate (e.g., after detecting a farewell in the conversation).

For more information, see our guide on using built-in tools.

• parameters string

  Stringified JSON defining the parameters used by this version of the Tool.

These parameters define the inputs needed for the Tool's execution, including the expected data type and description for each input field. Structured as a stringified JSON schema, this format ensures the Tool receives data in the expected format.

• tool_type enum

  Allowed values: BUILTIN, FUNCTION

• version integer

  Version number for a Tool. Version numbers should be integers. The combination of configId and version number is unique.

• version_type enum

  Allowed values: FIXED, LATEST

• description string or null

  An optional description of what the Tool does, used by the supplemental LLM to choose when and how to call the function.

• fallback_content string or null

  Optional text passed to the supplemental LLM in place of the tool call result. The LLM then uses this text to generate a response back to the user, ensuring continuity in the conversation if the Tool errors.

• version_description string or null

  An optional description of the Tool version.