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How to integrate Splice MCP with Atomic Agent

Connect Atomic Agent to Splice MCP. Find punchy drum loops for house, create a stack from these samples, and more using natural language, with authentication handled for you.

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Splice MCP is a sound catalog and sample-management platform for music creators. It helps you discover, organize, and manage licensed sounds using Splice credits.

6 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 Splice.

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 Splice account. See the Atomic Agent documentation for installation instructions.

Also integrate Splice MCP with

ChatGPTClaude CoworkHermes

How Atomic Agent connects to Splice

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 Splice 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 Splice. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Splice 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 Splice MCP server, and what's possible with it?

The Splice MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Splice account. It provides structured and secure access to the Splice sounds catalog and stacks, so your agent can search for sounds, create arrangements, edit stacks, share stacks, and download eligible sounds on your behalf.

  • Natural language sound search: Have your agent find sounds in the Splice catalog by describing the style, mood, instrument, or texture you need.
  • Stack creation: Let the agent create a new stack from an existing sample.
  • Multi-track arrangement generation: Direct your agent to turn a text description into a complete arrangement of compatible samples.
  • Stack editing and sharing: Instruct your agent to modify an existing stack and create a public link you can share with others.
  • Sound downloads: Have your agent purchase an eligible catalog sound and provide access to its download.

Use Splice from Atomic Agent

With your account connected, ask Atomic Agent to work with Splice 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 Splice MCP action and event your agent gets out of the box.

Create stack

Create a stack from an existing sample.

Describe a sound

Search the Splice catalog for sounds matching a natural language description.

Download asset

Purchase and get a presigned download URL for a sound from the Splice catalog.

Prompt to stack

Generate a complete multi-track arrangement of compatible samples from a text description.

Share stack

Generate a public shareable URL for an existing stack.

Update stack

Modify an existing stack.

FRAMEWORKS

How to build Splice MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Splice MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Splice MCP with Claude Cowork

Hermes logo

Hermes

Use Splice MCP with Hermes

FAQ

Frequently asked questions

With a standalone Splice MCP server, the agents and LLMs can only access a fixed set of Splice tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Splice 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 Splice tools.

Yes, absolutely. You can configure which Splice 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 Splice data and credentials are handled as safely as possible.

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