curl -X POST 'https://api.elevenlabs.io/v1/convai/knowledge-base/rag-index' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "items": [
    {
      "document_id": "string",
      "create_if_missing": true,
      "model": "e5_mistral_7b_instruct"
    }
  ]
}'

# POST /v1/convai/knowledge-base/rag-index (ElevenLabs API)
Base URL: https://api.elevenlabs.io
Auth: xi-api-key: <ELEVENLABS_API_KEY>
Last verified: 2026-09-03

> Compute Rag Indexes In Batch

## 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 POST 'https://api.elevenlabs.io/v1/convai/knowledge-base/rag-index' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"items":[{"document_id":"string","create_if_missing":true,"model":"e5_mistral_7b_instruct"}]}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| items | body | object[] | Yes | List of requested RAG indexes. Minimum 1, maximum 100 items. |

## Response (200 OK)
{}

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

POST

/v1/convai/knowledge-base/rag-index

ElevenLabs API

Compute Rag Indexes In Batch

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
→ 177 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 POST 'https://api.elevenlabs.io/v1/convai/knowledge-base/rag-index' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "items": [    {      "document_id": "string",      "create_if_missing": true,      "model": "e5_mistral_7b_instruct"    }  ]}'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
items	body	object[]	Yes	List of requested RAG indexes. Minimum 1, maximum 100 items.

Response 200 OK

{}