How to Connect ElevenLabs to an AI Agent
Auth setup
1. Sign up at elevenlabs.io. 2. Go to Profile > API Keys. 3. Pass key as xi-api-key header.
Key facts
| Base URL | https://api.elevenlabs.io/v1/ |
|---|
| API version | v1 |
|---|
| Auth | API key in xi-api-key header. Generate at elevenlabs.io/app/settings/api-keys. |
|---|
| Request body | application/json |
|---|
| Pagination | N/A for generation. Voice library: has_more + next_page_token. |
|---|
| Rate limit | Free: 10K chars/month. Starter: 30K chars/month. Concurrent request limits vary by plan. |
|---|
| Error format | JSON: {"detail":{"status":"...","message":"..."}} |
|---|
Key endpoints
| Method | Path | Description |
|---|
POST | /text-to-speech/{voice_id} | Convert text to speech audio |
GET | /voices | List available voices |
POST | /voice-generation/generate-voice | Generate a new voice from description |
POST | /speech-to-text | Transcribe audio to text |
Quickstart
POST /v1/text-to-speech/{voice_id}
xi-api-key: {api_key}
Content-Type: application/json
{"text":"Hello world","model_id":"eleven_multilingual_v2"}
Response: audio/mpeg binary
Agent pitfalls & tips
- Response is binary audio (mpeg) — save to file or stream directly.
- Use eleven_multilingual_v2 model for non-English languages including Japanese.
- Voice cloning requires Professional plan. Instant cloning needs ~1 min of audio.
- For long text, use streaming endpoint /text-to-speech/{voice_id}/stream.
- Character quota is shared across all endpoints. Check usage via /user/subscription.
Source: curated by KanseiLink from official documentation (docs) and registry checks. Last reviewed: 2026-04-07. Specs change — verify against the official docs before production use.
Frequently Asked Questions
What is ElevenLabs's AEO score?
▼
ElevenLabs has an AEO score of 1.00 and is rated AAA (Best-in-class agent integration). AEO (Agent Engine Optimization) measures how well a SaaS service works with AI agents. Scores range from 0.00 to 1.00, with grades from AAA (best) to D (not agent-ready).
Is ElevenLabs AI-agent-ready?
▼
ElevenLabs is currently ✓ verified for AI agent use. It offers an official MCP (Model Context Protocol) server, which means AI agents can connect directly. For detailed connection guides, auth setup, and known pitfalls, use the KanseiLink MCP tool.
How does ElevenLabs compare to other AI & ML services?
▼
In the AI & ML category, ElevenLabs is rated AAA. KanseiLink evaluates services based on MCP availability, API quality, documentation, auth-guide clarity, and integration recipe availability (methodology published). Visit the full rankings at kansei-link.com to see how ElevenLabs compares.
How can I integrate ElevenLabs with an AI agent?
▼
The fastest way to integrate ElevenLabs with an AI agent is through KanseiLink MCP. Install it with: npx @kansei-link/mcp-server — then use the search_services and get_service_detail tools to get the current auth setup, endpoints, rate limits, and agent-specific tips. This data is kept fresh from registry checks, curated official-doc guides, and agent reports.
How do I authenticate with ElevenLabs?
▼
API key in xi-api-key header. Generate at elevenlabs.io/app/settings/api-keys. Setup: 1. Sign up at elevenlabs.io. 2. Go to Profile > API Keys. 3. Pass key as xi-api-key header.
What are ElevenLabs's API rate limits?
▼
Free: 10K chars/month. Starter: 30K chars/month. Concurrent request limits vary by plan.