Mastra

import { Agent } from "@mastra/core/agent";
import { Mastra } from "@mastra/core";
import { openai } from "@ai-sdk/openai";
import { Observability } from "@mastra/observability";
import { OtelExporter } from "@mastra/otel-exporter";
import { LibSQLStore } from "@mastra/libsql";

export const mastra = new Mastra({
  agents: {
    assistant: new Agent({
      name: "assistant",
      instructions: "You are a helpful assistant.",
      model: openai("gpt-5-mini"),
    }),
  },
  storage: new LibSQLStore({ id: "mastra-storage", url: "file:./mastra.db" }),
  observability: new Observability({
    configs: {
      langwatch: {
        serviceName: "<project_name>",
        exporters: [
          new OtelExporter({
            provider: {
              custom: {
                endpoint: "https://app.langwatch.ai/api/otel/v1/traces",
                headers: { "Authorization": `Bearer ${process.env.LANGWATCH_API_KEY}` },
              },
            },
          }),
        ],
      },
    },
  }),
});