Add ElevenLabs MCP server definition

Official ElevenLabs MCP server for voice synthesis, cloning, and audio.
Uses elevenlabs-mcp Python package via uvx with stdio transport.

https://claude.ai/code/session_013AxurW8hPAfnUNvik354Xx

Author: claude

servers/com.elevenlabs-mcp.json

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+{
+  "$schema": "../schemas/server-definition.schema.json",
+  "id": "com.elevenlabs-mcp",
+  "name": "ElevenLabs",
+  "alias": "elevenlabs",
+  "description": "Generate speech, clone voices, create sound effects, and manage audio with the ElevenLabs API. Text-to-speech, voice design, and audio isolation.",
+  "icon": "https://avatars.githubusercontent.com/u/94471909?v=4",
+  "schema_version": "2.1",
+  "categories": ["ai-ml"],
+  "tags": ["elevenlabs", "voice", "text-to-speech", "tts", "audio", "speech-synthesis", "voice-cloning"],
+
+  "transport": {
+    "type": "stdio",
+    "command": "uvx",
+    "args": ["elevenlabs-mcp"],
+    "env": {
+      "ELEVENLABS_API_KEY": "${input:ELEVENLABS_API_KEY}"
+    },
+    "metadata": {
+      "inputs": [
+        {
+          "id": "ELEVENLABS_API_KEY",
+          "label": "ElevenLabs API Key",
+          "description": "API key for the ElevenLabs platform.",
+          "type": "password",
+          "required": true,
+          "secret": true,
+          "placeholder": "sk_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
+          "obtain": {
+            "url": "https://elevenlabs.io/app/settings/api-keys",
+            "instructions": "1. Go to elevenlabs.io > Profile + API key\n2. Click 'Create API Key'\n3. Copy the key",
+            "button_label": "Create API Key"
+          }
+        }
+      ]
+    }
+  },
+
+  "auth": {
+    "type": "api_key",
+    "instructions": "Create an API key at https://elevenlabs.io/app/settings/api-keys"
+  },
+
+  "contributor": {
+    "name": "ElevenLabs",
+    "github": "elevenlabs",
+    "url": "https://elevenlabs.io"
+  },
+
+  "links": {
+    "repository": "https://github.com/elevenlabs/elevenlabs-mcp",
+    "homepage": "https://elevenlabs.io",
+    "documentation": "https://github.com/elevenlabs/elevenlabs-mcp#readme"
+  },
+
+  "platforms": ["all"],
+
+  "capabilities": {
+    "tools": true,
+    "resources": false,
+    "prompts": false,
+    "read_only_mode": false
+  }
+}