LaminarExporter

Sends Tracing data to Laminar via OTLP/HTTP (protobuf).

Constructor

new LaminarExporter(config?: LaminarExporterConfig)

LaminarExporterConfig

interface LaminarExporterConfig extends BaseExporterConfig {
  apiKey?: string;
  baseUrl?: string;
  endpoint?: string;
  headers?: Record<string, string>;
  realtime?: boolean;
  disableBatch?: boolean;
  batchSize?: number;
  timeoutMillis?: number;
}

Extends BaseExporterConfig, which includes:

• logger?: IMastraLogger - Logger instance
• logLevel?: LogLevel | 'debug' | 'info' | 'warn' | 'error' - Log level (default: INFO)

Methods

exportTracingEvent

async exportTracingEvent(event: TracingEvent): Promise<void>

Exports a tracing event to Laminar.

flush

async flush(): Promise<void>

Force flushes any buffered spans to Laminar without shutting down the exporter. Useful in serverless environments where you need to ensure spans are exported before the runtime terminates.

shutdown

async shutdown(): Promise<void>

Flushes pending data and shuts down the exporter.

Usage

Zero-Config (using environment variables)

import { LaminarExporter } from "@mastra/laminar";

// Reads from LMNR_PROJECT_API_KEY, LMNR_BASE_URL, LAMINAR_ENDPOINT
const exporter = new LaminarExporter();

Explicit Configuration

import { LaminarExporter } from "@mastra/laminar";

const exporter = new LaminarExporter({
  apiKey: process.env.LMNR_PROJECT_API_KEY,
  baseUrl: "https://api.lmnr.ai",
  realtime: true,
});