POST
/v1/convai/conversations/{conversation_id}/files
ElevenLabs APIUpload File
- 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
→ 180 tokens · Vary: Accept
→ 180 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/conversations/conversation-id/files' \ -H "xi-api-key: $ELEVENLABS_API_KEY" \ -F 'file=@sample.bin'Get a free ElevenLabs API key → sponsored
Parameters
| Name | In | Type | Required | Description |
|---|---|---|---|---|
| conversation_id | path | string | Yes | path parameter conversation_id. |
| file | body | string | Yes | Image or PDF file to upload |
Response 200 OK
{
"file_id": "string"
}