ElevenLabs Audio MCP for ChatGPT
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| PORT | No | HTTP port; Railway supplies this automatically. | 3000 |
| DATA_DIR | No | Optional preference storage override. Railway volumes are detected automatically through RAILWAY_VOLUME_MOUNT_PATH. | |
| MAX_TEXT_LENGTH | No | Maximum characters accepted per generation. | 5000 |
| MCP_PATH_SECRET | Yes | Required 24–128 character URL-safe secret. | |
| PUBLIC_BASE_URL | No | Optional canonical public origin. | |
| AUDIO_TTL_SECONDS | No | How long generated audio remains available. | 900 |
| ELEVENLABS_API_KEY | Yes | Required ElevenLabs API key. | |
| ELEVENLABS_MODEL_ID | No | Default TTS model. Eleven v3 gives the model the most expressive delivery controls. | eleven_v3 |
| ELEVENLABS_VOICE_ID | Yes | Required ElevenLabs voice ID used when a tool call omits voice_id; users can override it through the saved preference. | |
| MAX_CACHED_AUDIO_BYTES | No | Maximum total in-memory audio cache. | 52428800 |
| MAX_CONCURRENT_GENERATIONS | No | Maximum simultaneous TTS requests. | 2 |
| MAX_GENERATIONS_PER_MINUTE | No | Per-instance burst limit protecting ElevenLabs credits. | 10 |
Capabilities
Server capabilities have not been inspected yet.
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
No tools | |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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