---
title: "List Voice KB Gaps"
description: "List a voice agent's pending knowledge-base gaps: questions callers asked that the agent answered with low confidence or an explicit \"I don't know,\" surfaced automatically after calls."
---

> 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 Voice KB Gaps

Use the Speak AI MCP server tool `list_voice_kb_gaps` to list a voice agent's
pending knowledge-base gaps: questions callers asked that the agent answered with
low confidence or an explicit "I don't know," surfaced automatically after calls.

## What does it do?

List a voice agent's pending knowledge-base gaps: questions callers asked that the
agent answered with low confidence or an explicit "I don't know," surfaced
automatically after calls. Up to the 50 most recent pending gaps, newest first.

## Parameters

`list_voice_kb_gaps` takes 1 parameter, all of them required.

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `agentId` | string | Yes | ID of the voice agent (from `list_voice_agents`) |

## Behaviour

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

- 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

- [Voice agent insights](/mcp/tools/voice-agent-intelligence/) lists the rest of the
  Voice agent insights 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/voice-agent-intelligence/list_voice_kb_gaps/index.mdx