How to integrate Lmnt MCP with Atomic Agent

Connect Atomic Agent to Lmnt MCP. Generate a podcast intro in a new voice, list all available ai voices for selection, and more using natural language, with authentication handled for you.

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Lmnt is an AI-powered audio and voice manipulation platform for creative and technical sound work. It makes generating and transforming audio fast, flexible, and accessible for every developer.

8 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Lmnt.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Lmnt account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Lmnt

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Lmnt to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Lmnt. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Lmnt account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the Lmnt MCP server, and what's possible with it?

The Lmnt MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Lmnt account. It provides structured and secure access to your voice and audio management features, so your agent can perform actions like creating voices, synthesizing speech, retrieving or updating voice profiles, and managing your audio assets on your behalf.

  • Custom voice creation and management: Direct your agent to create new voice profiles or update existing ones for use in voice synthesis and transformation.
  • Real-time speech synthesis: Instantly generate lifelike speech from text using your selected voice models for creative or technical projects.
  • Voice library retrieval: Have your agent fetch and list all available voices in your Lmnt account, making it easy to explore or switch between options.
  • Voice info review and deletion: Pull detailed information about any voice profile or let your agent remove unused voices to keep your workspace organized.
  • Account insights and status checks: Allow your agent to retrieve your Lmnt account details, ensuring smooth integration and monitoring of usage or settings.

Use Lmnt from Atomic Agent

With your account connected, ask Atomic Agent to work with Lmnt in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

Every Lmnt action and event your agent gets out of the box.

Create Voice

Creates a custom voice in LMNT by training on uploaded audio samples.

Delete Voice Info

Deletes a voice from your LMNT account.

Generate Speech With Metadata

Generates speech from text and returns JSON with base64-encoded audio and optional word-level timing metadata.

Get Account

Retrieves account information including subscription plan details and current usage statistics.

Get Voice Info

Gets metadata for a specific LMNT voice, including active status, supported languages, and plan availability.

Get Voices List

Retrieves a list of available voices from LMNT.

Synthesize Speech

Synthesizes speech from text using LMNT's AI voices.

Update Voice Info

Updates information about a specific voice in LMNT.

FAQ

Frequently asked questions

With a standalone Lmnt MCP server, the agents and LLMs can only access a fixed set of Lmnt tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Lmnt and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Lmnt tools.

Yes, absolutely. You can configure which Lmnt scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Lmnt data and credentials are handled as safely as possible.

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