Providers

Mastra

Markdown

The Mastra provider transforms Devcaster tools into Mastra's tool format with built-in execution.

Install

npm install @devcaster/core @devcaster/mastra @mastra/core @ai-sdk/openai

Configure API Keys

Set DEVCASTER_API_KEY with your API key from Settings and OPENAI_API_KEY with your OpenAI API key.

.env
DEVCASTER_API_KEY=xxxxxxxxx
OPENAI_API_KEY=xxxxxxxxx

Create session and run

import { Devcaster } from "@devcaster/core";
import { MastraProvider } from "@devcaster/mastra";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const devcaster = new Devcaster({
  provider: new MastraProvider(),
});

// Create a session for your user
const session = await devcaster.create("user_123");
const tools = await session.tools();

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant.",
  model: openai("gpt-5.2"),
  tools,
});

const { text } = await agent.generate([
  { role: "user", content: "Send an email to john@example.com with the subject 'Hello' and body 'Hello from Devcaster!'" },
]);

console.log(text);