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LangDB API Reference

Complete API reference for LangDB unified AI gateway services.

Introduction​

This API is documented in OpenAPI format and provides access to LangDB's unified AI gateway services.

LangDB offers a comprehensive platform for managing and interacting with 250+ LLM models through a single unified interface. The API supports:

  • Multiple Model Providers: Access models from OpenAI, Anthropic, Google, Meta, and many more
  • Unified Interface: Use OpenAI-compatible API format for all models
  • Enterprise Features: Advanced routing, analytics, rate limiting, and more
  • Thread Management: Track and manage conversation threads across models
  • Usage Analytics: Monitor your API usage and costs in real-time

All API endpoints use Bearer Authentication with JWT tokens. Include your API key in the Authorization header:

Authorization: Bearer <your-api-key>

Additionally, include your Project ID in the x-project-id header for all requests:

x-project-id: <your-project-id>

API Specifications​

Analytics API

Analytics and usage tracking endpoints for monitoring your LangDB usage.

View OpenAPI Specification