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Standalone Server Quickstart

The create mastra CLI command is the quickest way to spin up a standalone Mastra server. It walks you through setup and creates example agents, workflows, and tools for you to run locally or adapt

If you need more control over the setup, see the manual installation guide. You can also use mastra init for existing projects.

Before you begin​

  • You'll need an API key from a supported model provider. If you don't have a preference, use OpenAI.

Initialize Mastra​

You can run create mastra anywhere on your machine.

When prompted, choose a provider (e.g. OpenAI) and enter your key:

npm create mastra@beta

This creates a new directory for your project with a src/mastra folder containing an example weather agent and the following files:

  • index.ts - Mastra config, including memory
  • tools/weather-tool.ts - a tool to fetch weather for a given location
  • agents/weather-agent.ts - a weather agent with a prompt that uses the tool
tip

You can use flags with create mastra like --no-example to skip the example weather agent or --template to start from a specific template

Test your agent​

Once setup is complete, follow the instructions in your terminal to start the Mastra dev server, then open Studio at localhost:4111.

Try asking about the weather. If your API key is set up correctly, you'll get a response:

Studio lets you rapidly build and prototype agents without needing to build a UI. Once you're ready, you can integrate your Mastra agent into your app using the guides below.

Next steps​

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