// changelog

What's new.

0.2.0

2026-05-07

Fork Engine + OTel + Evals

  • +Fork execution engine — replay LLM calls with modified inputs
  • +OpenTelemetry OTLP/JSON ingestion endpoint
  • +LLM-as-judge evaluation system with custom criteria
  • +Real-time WebSocket updates in the dashboard
  • +Migrated to Retrace AI (powered by Gemini 3.1 Pro)
  • +Migrated billing to Dodo Payments
  • +Semantic search across traces with filters
  • +Trace deletion with cascade cleanup
  • +Fork comparison UI with side-by-side diff
  • +Run evaluations from the web interface
0.1.0

2026-05-01

Public Beta

  • +Core trace recording with Python and TypeScript SDKs
  • +Tape player for replaying agent executions
  • +Fork any step and rerun with modifications
  • +Shareable tape links — no login required
  • +Agent memory with semantic search
  • +Skills system for reusable agent capabilities
  • +MCP server for Claude Code and Cursor integration
  • +WebSocket streaming for real-time ingestion