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Jan 23rd, 2026

Changelog : January 2026

Updates

TL;DR

Kick Off 2026: Synthetic monitoring, host health heatmap, AI streaming, dashboard search, legend placement, and 20+ improvements across logs, traces, and alerts.

Last9 Changelog : January 2026

December 29, 2025 - January 22, 2026

TL;DR

This month brings major new features: Synthetic Monitoring for proactive uptime checks, Host Health Heatmaps for instant infrastructure visibility, Service Maps to visualize dependencies, and keyboard shortcuts for power users. We've also added MCP integration for IDE tools and AI Assistant streaming for real-time responses.

Added

Synthetic Monitoring

Proactive uptime monitoring is here. Create checks that run continuously from multiple regions to catch issues before your users do.

Synthetic Monitoring dashboard showing HTTP, HTTPS, TCP, DNS check types with multi-region location selection
  • HTTP/HTTPS checks — Monitor API endpoints with custom headers, authentication, and response assertions
  • TCP checks — Verify port connectivity for databases, caches, and internal services
  • DNS checks — Validate DNS resolution and record values
  • ICMP checks — Classic ping monitoring for network-level health
  • Multi-region execution — Run checks from multiple geographic locations
  • Custom assertions — Validate response codes, body content, headers, and timing thresholds

Get started: Navigate to Synthetic Monitoring in the sidebar to create your first check.

Docs: Synthetic Monitoring Documentation

Host Health Heatmap

A visual grid showing the health status of all your hosts at a glance. Quickly identify problematic infrastructure without scrolling through tables.

Host Health Heatmap displaying hosts grouped by job with green, yellow, and red cells indicating health status
  • Color-coded health indicators — Green (healthy), yellow (warning), red (critical)
  • Search and filter — Find specific hosts by name, tag, or status
  • Group by any attribute — Organize by environment, region, team, or custom tags
  • Click to drill down — Select any cell to see detailed host metrics

Get started: Visit Discover Hosts and toggle to the heatmap view.

Docs: Discover Hosts

Service Maps

Visualize your service dependencies with an interactive topology map. Understand how services connect and where requests flow.

  • Auto-discovered topology — Built from your trace data, no manual configuration
  • Request flow visualization — See how traffic moves between services
  • Latency and error indicators — Identify bottlenecks at a glance
  • Click to explore — Select any service to see detailed metrics

Get started: Navigate to Discover Services and click "Service Map" in the navigation.

Docs: Discover Services

Host Processes Tab

The Host details page now includes a Processes tab showing per-process metrics. Monitor CPU usage, memory consumption, and I/O for individual processes running on your hosts.

  • Per-process CPU and memory — See which processes are consuming resources
  • I/O metrics — Disk read/write activity per process
  • Sortable table — Find resource hogs quickly

Why this matters: When a host is under stress, you need to quickly identify which process is the culprit. This tab gives you that visibility without SSH-ing into the machine.

Get started: Go to any Host details page and click the "Processes" tab.

Keyboard Shortcuts

Navigate Last9 like a pro with comprehensive keyboard shortcuts throughout the application.

  • Global: Press ? anywhere to see available shortcuts
  • Command palette: Cmd/Ctrl + K for instant navigation
  • Vim-style navigation: j/k to move through logs, Enter to open details
  • Query modes: Press 1, 2, 3 to switch between Ask, Builder, and LogQL modes
  • Toggle controls: t f for filters, t v for volume chart, t w for line wrap

Docs: Keyboard Shortcuts Reference

MCP Integration for IDE Tools

Query your observability data directly from your IDE. Last9 now supports Model Context Protocol (MCP), allowing tools like Cursor and Claude Code to access your logs, traces, and metrics.

  • Secure token management — Generate scoped MCP tokens
  • IDE integration — Works with Cursor, Claude Code, and other MCP-compatible tools
  • Contextual debugging — AI tools can query your data without leaving the IDE

Get started: Go to Settings → MCP Tokens to generate an access token.

New Dashboard Chart Types

Expanded visualization options for dashboards:

  • Heatmap — Visualize data density over time
  • Status History — Track state changes over time
  • Bar Charts — Compare values across categories
  • IEC vs SI Bytes — Choose between 1024-based (KiB) or 1000-based (KB) formatting

AI Assistant Streaming Responses

The AI Assistant now streams responses in real-time, so you see answers as they're generated instead of waiting for the complete response.

AI Assistant interface showing a streaming response with system health overview

Dynamic Dashboard Search in Command Palette

Search for dashboards directly from the command palette (Cmd+K). Results appear dynamically as you type, and dashboard creator names are searchable.

Additional New Features

  • Log Anomaly Detection — Anomalous log patterns are automatically detected and highlighted
  • Traces Remapping — Configure custom field mappings for trace data
  • Adaptive Alerts for Exceptions — Set up alerts when exception patterns change
  • Legend Placement Options — Configurable legend placement for line and donut charts
  • PromQL Query Visibility in K8s Panels — See the underlying queries powering Kubernetes visualizations
  • Search Filter for Performance History — Filter endpoints in Discover Services history tab
  • "Filter By" Context Menu on Log Fields — Right-click any field to add it as a filter
  • Keyboard Shortcut for Log Details — Cmd/Ctrl + Click opens log details panel directly

Improved

Logs Experience

  • JSON Tree Viewer Enhancements — Partial text selection, proper truncation handling, JSON tree for log body
  • Array JSON filtering — Filter on nested arrays using JSONP parse stages
  • Related Logs in Traces — Same component as Discover Services with proper index selection
  • Complete Stack Traces — Full stack traces including React component stack for frontend errors
  • Volume chart fixes — Rendering edge cases and state management improvements

Dashboard & UI

  • Command Palette Polish — Faster navigation and better search results
  • Synthetic Monitoring Status — Check cards display execution status and last run time
  • Browser Tab Titles — Consistent "Type: Name" pattern for easier tab management
  • Navbar Collapse Animation — Fixed animation sync and organization name display
  • Native Right-Click Behavior — Browser context menu with "Open in new tab" option
  • APDEX Chart Improvements — Better chart rendering and more accurate tooltips

Read our blog posts:

Published January 22, 2026