Changelog

Everything new, improved, and fixed in Farol.

May 2, 2026 Latest

  • NewOpenTelemetry bridge (beta) — point your OTLP/HTTP exporter at Farol, no SDK changes required
  • NewEvals system — run LLM-as-judge evaluations on agent outputs; score for correctness, groundedness, JSON validity, and tone
  • NewEvals page (/evals) — configure eval rules per agent, run on any trace, view pass rate and score history
  • NewEvals tab in trace modal — see per-trace eval results with score, pass/fail, and LLM reason inline

May 1, 2026

  • NewAutomatic trace propagation — parent agent runs now automatically link to child agents without manual parent_trace_id passing
  • NewPipeline DAG visualization — multi-agent trace modal now shows a visual pipeline graph with per-agent cost, duration, and status
  • NewCost optimization insights — detects redundant tool calls, model mismatch, and cost spikes with estimated monthly savings in the agent modal
  • ImprovedPython SDK 0.1.7 — uses contextvars for async-safe context propagation
  • ImprovedNode.js SDK 0.1.7 — uses AsyncLocalStorage for async-safe context propagation

April 24, 2026

  • NewProactive trend alerts — get notified when cost, latency, or success rate is drifting before it becomes a problem
  • ImprovedStatistical thresholds raised to 10+ runs minimum for more reliable anomaly detection
  • ImprovedServer-side anomaly detection in ingest — consistent regardless of SDK version
  • ImprovedPython SDK 0.1.6 — improved baseline detection
  • ImprovedNode.js SDK 0.1.6 — version sync

April 24, 2026

  • NewMulti-agent trace linking — pass parent_trace_id to connect child agent runs to their parent
  • NewPipeline cost rollup — see total cost across all linked agents in the trace modal
  • NewSpawned runs visible in trace modal — click through to any child or parent run
  • ImprovedPython SDK 0.1.5 — add parent_trace_id parameter
  • ImprovedNode.js SDK 0.1.5 — add parentTraceId parameter

April 23, 2026

  • NewPrompt version tagging — tag runs with a version label (v2, after_refactor) to track how prompt changes affect cost and quality
  • NewVersion comparison table in agent modal — see success rate, avg cost, and quality score side by side across prompt versions
  • ImprovedPython SDK 0.1.4 — add prompt_version parameter
  • ImprovedNode.js SDK 0.1.4 — add promptVersion parameter

April 18, 2026

  • NewAgent Health Score — one number (0-100) combining success rate, cost, quality, and latency for each agent
  • NewDate range filter on runs table — filter by Today, Last 7 days, Last 30 days, Last 90 days, All time
  • NewRun search now includes agent name alongside topic and error
  • Newp95 latency anomaly alerts — get alerted when tail latency worsens week over week
  • NewDuration anomaly alerts — get alerted when a run takes 3× longer than your baseline
  • NewAll/Unread filter on alerts — see only what you haven’t actioned yet
  • ImprovedAlerts persist per user across logout/login

April 15, 2026

  • NewNative Slack integration — send alerts directly to any Slack channel
  • NewFeedback page — share bugs, feature requests, and general feedback at /feedback
  • NewStudio plan — Coming Soon with notify me link
  • ImprovedBuilder plan — €69/mo with unlimited events
  • ImprovedPricing cards show specific features per tier

April 14, 2026

  • NewPolar.sh billing — cleaner checkout, better developer experience
  • NewQuality trend alerts — get alerted when output quality drops week over week
  • NewRun notes — annotate any run with context directly from the trace modal
  • NewError message search — search runs by topic, agent name, or error message

April 12, 2026

  • NewBudget alerts — set monthly spend limits per agent, get notified when crossed
  • NewWeekly digest email — every Monday, a summary of your agents’ health and cost
  • NewShared read-only dashboards — share a link with clients or investors, no login required
  • NewCSV export — download your runs filtered by agent and date
  • NewQuality scoring — rate agent outputs thumbs up/down, track trends over time

April 10, 2026

  • NewNode.js SDK — npm install @usefarol/sdk, full TypeScript support
  • NewSampling support — send only a fraction of runs to reduce noise and costs
  • NewWebhook alerts — send alerts to Discord, Google Chat, Zapier, or any HTTP endpoint
  • ImprovedDocs — spans reference, updated SDK examples, FAQ expanded

April 7, 2026

  • NewRegression alerts — automatic detection when success rate drops week over week
  • Newp95 / p99 latency tracking — see your slowest runs, not just averages
  • NewCost anomaly detection — baseline learning per agent, alerts on spikes
  • NewFull trace inspector — every tool call, LLM call, and error reconstructed end to end
  • NewPython SDK — pip install farol-sdk, one decorator to get started