Changelog

Product Updates

Track the latest features, improvements, and fixes to the Predicate Platform.

New Featurev0.99.7February 1, 2026

Auto-Emit Complete Trace Structure

SDK now automatically emits complete trace events for seamless Predicate Studio visualization. Screenshots, run lifecycle, and step events are emitted by default.

  • Auto-emit `run_start` in `create_tracer()` / `createTracer()` with metadata (goal, agent_type, llm_model, start_url)
  • Auto-emit `step_start` in `AgentRuntime.begin_step()` / `beginStep()` with step context
  • Auto-emit `snapshot` with `screenshot_base64` in `AgentRuntime.snapshot()` for timeline screenshots
  • Opt-out parameters available: `auto_emit_run_start`, `emit_trace` for manual control
  • Complete trace structure ensures proper step counts and status display in Studio
New FeatureSDKJanuary 29, 2026

PredicateDebugger sidecar

Attach Predicate's verification + traces to your existing agent loop (Playwright or CDP backend). Your agent can add assertions dynamically on the fly.

  • Playwright: attach to an existing Page and verify with `.check(...).once()` / `.eventually()`
  • CDP: wrap a BrowserBackend in AgentRuntime and use PredicateDebugger as a verifier
  • Rich traces + artifacts on required assertion failures
ImprovementSDKJanuary 28, 2026

Snapshot ML reranking metadata

Snapshots now include `ml_rerank` metadata and `fused_rank_index` to make goal-conditioned ranking explainable and debuggable.

  • `ml_rerank`: enabled/applied flags, reason, candidate_count, top_probability, confidence thresholds, tags, errors
  • `fused_rank_index`: the final 0-based rank after ML + heuristic fusion
New FeatureSDKJanuary 25, 2026

CAPTCHA handler page-control hook

CAPTCHA handlers can safely run JavaScript on the live page session to apply tokens and trigger callbacks.

  • `ctx.page_control.evaluate_js` for external solvers and human-in-loop handlers
  • Keeps solving logic external while maintaining session consistency
ImprovementSDKJanuary 23, 2026

AgentRuntime parity upgrades

AgentRuntime gained practical “run loop” utilities like tabs, bounded JS evaluation, and lifecycle hooks to make verification loops easier to build and debug.

  • Tabs API: open/switch/close/list tabs from AgentRuntime
  • Evaluate JS helper with bounded output
  • Default ToolRegistry tools for common browser operations
New Featurev1.3.0December 22, 2025

SDK Release & Snapshot Endpoint

Official release of Predicate SDK for Python and TypeScript, plus new v1/snapshot endpoint for semantic element extraction.

  • Predicate SDK for Python and TypeScript - install via pip or npm
  • New v1/snapshot endpoint for structured element data extraction
  • Built-in element filtering by role, visibility, and custom criteria
  • Native browser extension integration for Chrome
  • Token-efficient LLM automation with 43-73% reduction in token usage
  • Full documentation and playground examples available
New Featurev1.2.0December 10, 2025

Precision Rendering Mode Launch

Introduced render_quality: 'precision' option for pixel-perfect accuracy when you need it most.

  • New precision rendering engine for >99.5% accuracy
  • Optional precision mode via render_quality parameter
  • 10 credits per precision request (vs 2 for performance)
  • Perfect for visual QA, dataset generation, and debugging
Improvementv1.1.0December 5, 2025

Performance Engine Optimization

Significant speed improvements to our default Performance Engine.

  • Reduced average response time from 600ms to <400ms
  • Improved element detection accuracy to 97%
  • Better handling of dynamic content
  • Enhanced viewport detection algorithm
Bug Fixv1.0.2December 1, 2025

Bug Fixes and Stability

Various bug fixes and stability improvements.

  • Fixed incorrect bounding boxes for overlapping elements
  • Resolved timeout issues on slow-loading pages
  • Improved error messages for invalid URLs
  • Fixed memory leak in long-running sessions
Improvementv1.0.1November 27, 2025

Dashboard Enhancements

Improved user dashboard with better analytics and insights.

  • Added usage breakdown by mode (Reader vs Map)
  • New chart showing requests over time
  • API key usage tracking
  • Faster dashboard load times
New Featurev1.0.0November 20, 2025

Predicate Platform Launch

Official launch of Predicate Platform - the perception layer for AI agents.

  • Reader Mode for clean Markdown extraction
  • Map Mode for element coordinates
  • Sub-second response times
  • Credit-based pricing system
  • Full REST API documentation

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