---
title: "Custom fields tools in the Speak AI MCP server reference"
description: "Standalone AI-analyzed text notes plus custom fields you can tag any media file with. All 4 Custom fields tools, with parameters and behaviour hints."
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.speakai.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom fields tools in the Speak AI MCP server reference

The Custom fields category groups 4 of the Speak AI MCP server's tools. Standalone
AI-analyzed text notes plus custom fields you can tag any media file with.

## Which Custom fields tools does the Speak AI MCP server have?

The Speak AI MCP server has 4 Custom fields tools. Each one has its own page with a
plain-language summary, its parameters, and its behaviour hints.

- [`list_fields`](/mcp/tools/custom-fields/list_fields/): List all custom fields
  defined in the workspace.
- [`create_field`](/mcp/tools/custom-fields/create_field/): Create a new custom
  field for categorizing and tagging media.
- [`update_field`](/mcp/tools/custom-fields/update_field/): Update a specific custom
  field by ID.
- [`update_multiple_fields`](/mcp/tools/custom-fields/update_multiple_fields/): Set
  custom field values across media in a single batch operation.

## Related

- [Tool reference](/mcp/tools/) lists every Speak AI MCP server tool across every
  category.
- [MCP server](/mcp/) covers setup, supported clients, and what agents can do once
  connected.

Source: https://docs.speakai.co/mcp/tools/custom-fields/index.mdx