Changelog
v2.4.0 January 20, 2026
- feature Added
Last-Event-ID support for WebSocket stream resumption
- improvement Reduced P99 delivery latency from 320ms to 180ms
- fix Fixed edge case where duplicate events could be delivered when a webhook endpoint returns 5xx during retry window
v2.3.2 December 5, 2025
- fix Resolved connection leak in WebSocket streaming when client disconnects without sending close frame
- fix Fixed
cursor pagination returning stale results when events are created during iteration
v2.3.0 November 15, 2025
- feature WebSocket real-time streaming endpoint (
/v2/stream)
- feature Channel-based subscription filtering
- improvement Event payload size limit increased from 64KB to 256KB
v2.2.0 August 3, 2025
- feature Rate limit headers (
X-RateLimit-Remaining, X-RateLimit-Reset)
- improvement Webhook retry backoff changed from fixed 60s to exponential (10s, 30s, 60s, 300s, 3600s)
v2.1.0 May 10, 2025
- feature Webhook management endpoints (
POST/GET/DELETE /v2/webhooks)
- feature Event type filtering for webhook subscriptions
- fix Timestamps now consistently use UTC in all responses
v2.0.0 February 1, 2025
Major version release. Breaking changes from v1.
- New authentication scheme (
Bearer li_live_ / li_test_ prefix)
- All endpoints moved to
/v2 prefix
- Event IDs changed from numeric to
evt_ prefixed strings
- Error responses now use structured JSON format
v1.3.0 October 22, 2024
- feature Batch event publishing (up to 100 events per request)
- improvement Increased webhook timeout from 5s to 15s
v1.2.0 July 8, 2024
- feature Event delivery status tracking
- fix Fixed race condition in concurrent event publishing to the same channel
v1.1.0 April 15, 2024
- feature Sandbox environment with
test_ API keys
- feature Event replay for debugging
v1.0.0 February 20, 2024
Initial release.
- Event publishing and retrieval
- Channel-based routing
- API key authentication