curl -X POST 'https://api.elevenlabs.io/v1/convai/tags' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "title": "string",
  "description": "string"
}'

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

> Create Conversation Tag

## 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/tags' \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"title":"string","description":"string"}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| title | body | string | Yes | Display title of the tag. |
| description | body | string | No | Optional free-text description. |

## Response (200 OK)
{"tag_id":"string","workspace_id":"string"}

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

POST

/v1/convai/tags

ElevenLabs API

Create Conversation Tag

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
→ 185 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/tags' \  -H "xi-api-key: $ELEVENLABS_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "title": "string",  "description": "string"}'

Get a free ElevenLabs API key → sponsored

Parameters

Name	In	Type	Required	Description
title	body	string	Yes	Display title of the tag.
description	body	string	No	Optional free-text description.

Response 200 OK

{
  "tag_id": "string",
  "workspace_id": "string",
  "owner_user_id": "string",
  "title": "string",
  "description": "string",
  "created_at_unix_secs": 0
}