---
title: "List Custom Fields"
description: "List all custom fields defined in the workspace."
---

> 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.

# List Custom Fields

Use the Speak AI MCP server tool `list_fields` to list all custom fields defined in
the workspace.

## What does it do?

List all custom fields defined in the workspace.

## Parameters

`list_fields` takes no parameters.

## Behaviour

The Speak AI MCP server publishes these behaviour hints for `list_fields`.

- Only reads data. Does not modify your workspace.
- Does not delete or overwrite existing data.
- Repeating an identical call is safe.
- Stays inside Speak AI. Does not reach other systems.

## Related

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

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