mcp-use/dist/src/observability/langfuse.d.ts

Opinionated MCP Framework for TypeScript (@modelcontextprotocol/sdk compatible) - Build MCP Agents, Clients and Servers with support for ChatGPT Apps, Code Mode, OAuth, Notifications, Sampling, Observability and more.

/**
 * Langfuse observability integration for MCP-use.
 *
 * This module provides automatic instrumentation and callback handler
 * for Langfuse observability platform.
 *
 * Note: This module expects environment variables to be loaded before import.
 * Users should load their environment variables using their preferred method
 * (e.g., dotenv, direct process.env assignment, or system environment).
 */
import type { BaseCallbackHandler } from "@langchain/core/callbacks/base";
/**
 * Initializes Langfuse observability for the application and installs a callback handler that augments traces with optional agent metadata and tags.
 *
 * This will attempt to dynamically load the Langfuse LangChain integration and, if available, create and store a wrapped callback handler (and optionally a Langfuse client) on the module state so tracing can be used elsewhere in the application.
 *
 * @param agentId - Optional identifier for the agent to include in traces
 * @param metadata - Optional static metadata to attach to traces; merged with dynamic metadata if a provider is supplied
 * @param metadataProvider - Optional function that returns dynamic metadata to attach to traces at runtime
 * @param tagsProvider - Optional function that returns an array of tags to attach to traces at runtime
 */
declare function initializeLangfuse(agentId?: string, metadata?: Record<string, any>, metadataProvider?: () => Record<string, any>, tagsProvider?: () => string[]): Promise<void>;
export declare const langfuseHandler: () => BaseCallbackHandler | null;
export declare const langfuseClient: () => any;
export declare const langfuseInitPromise: () => Promise<void> | null;
export { initializeLangfuse };
//# sourceMappingURL=langfuse.d.ts.map