aethexai-mcp 1.0.0

Aethex MCP Server

Aethex MCP Server

Drive the Aethex voice platform from any MCP client.
Synthesize speech, transcribe audio, build voice agents and their knowledge bases,
place calls, browse conversations, and read usage, from Claude, Cursor, Codex, and more.

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🎙️ Voice agents	🗣️ Text-to-speech	✍️ Transcription	📞 Calls & conversations
Build, configure, ground in knowledge	Synthesize & preview to WAV	Sync & async jobs	Place calls, search transcripts, read usage

The Model Context Protocol (MCP) server for the Aethex voice-AI platform. It wraps the public Aethex API through the aethexai Python SDK and exposes it as MCP tools, so clients like Claude Desktop, Claude Code, Cursor, Windsurf, and Codex can run voice workflows directly. Authentication is one variable, AETHEX_API_KEY; every tool runs scoped to that key's tenant.

Install

Run it with uv; your MCP client launches it on demand, with no install step:

uvx aethexai-mcp

Or install it into an environment:

pip install aethexai-mcp

Requires Python 3.11+. Get an AETHEX_API_KEY from the developer portal.

Quickstart

Add the server to Claude Desktop under Settings > Developer > Edit Config (claude_desktop_config.json):

{
  "mcpServers": {
    "Aethex": {
      "command": "uvx",
      "args": ["aethexai-mcp"],
      "env": { "AETHEX_API_KEY": "ae_live_..." }
    }
  }
}

Restart Claude and ask it to "list my Aethex voices". On Windows, enable Help > Enable Developer Mode first.

MCP clients

Any MCP client works. Common setups:

Client	Setup
Claude Desktop	Add the JSON block above to claude_desktop_config.json.
Claude Code	claude mcp add aethex --env AETHEX_API_KEY=ae_live_... -- uvx aethexai-mcp
Codex	Add an [mcp_servers.aethex] table to ~/.codex/config.toml (below).
Cursor / Windsurf	pip install aethexai-mcp, then run python -m aethexai_mcp --api-key=ae_live_... --print and paste the printed block into the client's MCP config.

Codex (~/.codex/config.toml):

[mcp_servers.aethex]
command = "uvx"
args = ["aethexai-mcp"]
env = { AETHEX_API_KEY = "ae_live_..." }

To override the API base URL, add AETHEX_BASE_URL to the env.

Core workflows

⚠️ Synthesizing speech, transcribing audio, and placing calls consume Aethex credits.

Everything is driven in natural language. A few examples:

Text to speech

"List my available voices, then read this paragraph aloud with the most neutral one."

Transcription

"Transcribe this recording and summarize what the caller asked for."

Voice agents and knowledge

"Create a voice agent that books dentist appointments, attach our FAQ as a knowledge document, then place a test call to my number."

Conversations and usage

"Search my conversations for anyone who mentioned a refund and pull the full transcript of the most recent one."

"Show me this month's usage and which model handled the most minutes."

Tools

32 tools across 7 domains. Every tool runs scoped to the tenant behind your AETHEX_API_KEY and requires that key to carry the listed scope.

Voices & text-to-speech

Tool	Scope	Purpose
list_voices	voices:read	List the tenant's available voices (global catalog + cloned), with optional language/tag filters and pagination.
synthesize_speech	tts:use	Synthesize text to speech with a chosen voice_id. Returns WAV audio.
preview_voice	tts:use	Render a short preview clip for a voice. Returns WAV audio.
list_tag_vocabulary	voices:read	The controlled vocabulary of voice tags (tone, texture, etc.) for filtering voices.

Transcription

Tool	Scope	Purpose
transcribe_audio	transcribe:use	Synchronously transcribe an audio file and return its text.
submit_transcription_job	transcribe:use	Submit an async transcription job (poll for the result; webhooks are REST-only).
get_transcription_job	transcribe:use	Poll an async transcription job's status and result.
cancel_transcription_job	transcribe:use	Cancel a pending async transcription job.

Voice agents

Tool	Scope	Purpose
create_agent	agents:write	Create a voice agent (name, system_prompt, voice_id required).
get_agent	agents:read	Fetch a single agent by id.
update_agent	agents:write	Patch an agent; only the fields you pass are changed.
list_agents	agents:read	List the tenant's agents with pagination.
delete_agent	agents:write	Delete an agent.
duplicate_agent	agents:write	Clone an agent along with its knowledge documents.

Agent knowledge bases

Tool	Scope	Purpose
upload_knowledge_doc	agents:write	Attach a knowledge document (text or file) to an agent.
list_knowledge_docs	agents:read	List an agent's knowledge documents.
query_knowledge_base	agents:read	Hybrid (vector + keyword) retrieval over an agent's knowledge base.
delete_knowledge_doc	agents:write	Remove a knowledge document from an agent.

Calls

Tool	Scope	Purpose
trigger_call	calls:write	Place a single outbound call (returns immediately with status="queued"; the dial runs off-request).
get_call	calls:read	Fetch a full call record.
get_call_status	calls:read	Lightweight telephony status for a call.
list_calls	calls:read	List calls with status/direction filters and pagination.
batch_calls	calls:write	Dispatch a batch of outbound calls (one agent, many recipients).

Conversations

Tool	Scope	Purpose
list_conversations	conversations:read	List the tenant's conversations with pagination.
get_conversation	conversations:read	Fetch a single conversation.
get_transcript	conversations:read	Fetch a conversation's turn-by-turn transcript.
search_conversations	conversations:read	Full-text search over conversations.
submit_feedback	conversations:read	Attach a rating and comment to a conversation.

Usage & models

Tool	Scope	Purpose
get_usage_summary	usage:read	Usage summary for the tenant (optionally scoped to one API key).
get_daily_usage	usage:read	Daily usage breakdown over a window of days.
get_monthly_usage	usage:read	Monthly usage breakdown.
list_models	models:read	List available models.

Configuration

The server is configured entirely through environment variables; only the API key is required.

Variable	Default	Description
AETHEX_API_KEY	required	Your Aethex API key; the only credential the server needs.
AETHEX_BASE_URL	https://api.aethexai.com	Override the API base URL. Leave unset for production.
AETHEX_MCP_OUTPUT_MODE	files	How audio outputs are returned: files, resources, or both.
AETHEX_MCP_BASE_PATH	~/Desktop	Base directory for saved audio when writing files.

Output modes

AETHEX_MCP_OUTPUT_MODE controls how the audio-producing tools (synthesize_speech, preview_voice) return results:

1. files (default): save the audio to disk and return the file path.
2. resources: return the audio inline as a base64-encoded MCP resource, with no disk I/O. Handy for containerized or sandboxed clients.
3. both: save to disk and return the resource; a saved resource can be fetched later via its aethex://<filename> URI.

Troubleshooting

Claude Desktop logs:

• macOS: ~/Library/Logs/Claude/mcp-server-Aethex.log
• Windows: %APPDATA%\Claude\logs\mcp-server-Aethex.log

AETHEX_API_KEY environment variable is required: the server refuses to start without a key. Set it in the env block of your client config (or your shell), using a valid key from the developer portal.

Timeouts on long-running tools: large transcriptions especially can take a while, and the MCP Inspector may report a timeout even though the tool finished. Prefer submit_transcription_job + get_transcription_job over a single synchronous call.

spawn uvx ENOENT: your client can't find uvx on its PATH. Run which uvx and use that absolute path as the command (e.g. /usr/local/bin/uvx).

Development

Run from source:

git clone https://github.com/aethexai/aethexai-mcp
cd aethexai-mcp
uv venv && source .venv/bin/activate
uv pip install -e ".[dev]"

./scripts/test.sh                            # pytest (add --verbose / --fail-fast)
uv run fastmcp dev aethexai_mcp/server.py    # explore every tool in the MCP Inspector

Questions can be sent to [e-mail].

Community

• GitHub: github.com/aethexai
• X: @aethexailabs
• LinkedIn: AethexAI
• Discord: discord.gg/ccyuJNZm7x

License

Released under the MIT License.