API & SDK Release Notes
Changelog
Changes to the Bear Lumen API and official SDKs. Endpoints, SDK methods, and breaking changes, newest first.
API 2025-10-18
Public API and official SDKs
New Features
- +Stable REST API under /v1 (dated version 2025-10-18)
- +Cost, margin, usage, attribution, insights, and dimension endpoints
- +Official Node.js / TypeScript SDK (@bearlumen/node-sdk)
- +Official Python SDK (bearlumen) with sync and async clients
Improvements
- *API key authentication with scoped, restricted keys
- *Webhook delivery for usage and billing events
- *OpenAPI 3 specification published at /openapi.json
