curl -X GET 'https://api.elevenlabs.io/v1/convai/agent/agent-id/knowledge-base/size' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

# GET /v1/convai/agent/{agent_id}/knowledge-base/size (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Returns The Size Of The Agent'S Knowledge Base

## Critical Gotchas
* Authentication uses the non-standard `xi-api-key` header, not `Authorization: Bearer`. Sending a Bearer token returns HTTP 401.
* Text-to-speech responses are raw binary audio, not JSON. Write the body to a file (`--output speech.mp3`) rather than parsing it.

## cURL
curl -X GET 'https://api.elevenlabs.io/v1/convai/agent/agent-id/knowledge-base/size' \
  -H "xi-api-key: $ELEVENLABS_API_KEY"

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| agent_id | path | string | Yes | path parameter agent_id. |

## Response (200 OK)
{"number_of_pages":0}

---
Need an API key? Get one at https://elevenlabs.io/app/sign-up

GET

/v1/convai/agent/{agent_id}/knowledge-base/size

ElevenLabs API

Returns The Size Of The Agent'S Knowledge Base

Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03 · upstream hash matched

Actions

Agents: curl -H "Accept: text/markdown" this URL
→ 163 tokens · Vary: Accept

Critical gotchas

Authentication uses the non-standard xi-api-key header, not Authorization: Bearer. Sending a Bearer token returns HTTP 401.

Text-to-speech responses are raw binary audio, not JSON. Write the body to a file (--output speech.mp3) rather than parsing it.

cURL

curl -X GET 'https://api.elevenlabs.io/v1/convai/agent/agent-id/knowledge-base/size' \  -H "xi-api-key: $ELEVENLABS_API_KEY"

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
agent_id	path	string	Yes	path parameter agent_id.

Response 200 OK

{
  "number_of_pages": 0
}