Reference

Changelog.

Everything that shipped, in reverse chronological order.

v0.8.0, March 10 2026.

Added

• Incident.io integration. Create and auto-resolve Incident.io incidents from upstream outages.
• Rootly integration. Create and auto-resolve Rootly incidents with configurable team and severity mapping.
• Risk score API. New /api/risk-score endpoint returns a composite reliability score for each service based on incident frequency, duration, and blast radius.

Improved

• SDK telemetry batching. Reduced default flush interval from 30s to 10s for faster incident detection.
• Webhook retry. Switched to exponential backoff (was linear) with up to 3 retries.

v0.7.0, February 14 2026.

Added

• MCP server. Connect CheckUpstream to Claude, Cursor, or other AI tools for natural-language queries about your upstream health.
• Blast radius analysis. New dashboard widget shows which of your projects are affected when a service degrades.
• SMS alerts. Enterprise plan users can receive SMS notifications for major outages.

Improved

• Status page parsing. Better reliability for Atlassian Statuspage, Instatus, and custom status pages.
• Dashboard performance. 40% faster initial load via incremental static regeneration.

Fixed

• Slack webhook. Fixed duplicate notifications when a service flaps between degraded and operational within the flush interval.

v0.6.0, January 20 2026.

Added

• 8 SDKs. Added PHP, Java, and .NET SDKs alongside existing Node.js, Python, Go, Rust, and Ruby SDKs.
• Google Chat and Telegram alert channels.
• Service filtering. SDKs now accept a services array to restrict monitoring to specific service slugs.

Improved

• Auto-detection. SDKs now recognize 50+ service domains (up from 15), including Supabase, PostHog, Segment, Mixpanel, Algolia, and Cloudinary.
• OpsGenie integration. Added configurable priority mapping (P1 through P5).

v0.5.0, December 8 2025.

Added

• PagerDuty integration. Trigger and auto-resolve PagerDuty incidents with severity mapping.
• OpsGenie integration. Create alerts with priority mapping.
• Webhook channel. Send raw JSON payloads to any HTTP endpoint with signature verification.

Fixed

• Discord embeds. Fixed color-coded severity not rendering on mobile clients.

v0.4.0, November 1 2025.

Added

• SDK reference docs. Comprehensive documentation for all SDK configuration options and telemetry event formats.
• Alert channels docs. Setup guides for Email, Slack, Discord, and Microsoft Teams.
• Supported services page. Interactive list of all monitored services with package mappings.

v0.3.0, October 15 2025.

Added

• Initial public beta. Core monitoring for Stripe, OpenAI, AWS S3, and Twilio.
• Node.js, Python, Go, Rust, Ruby SDKs.
• Email and Slack alert channels.
• Dashboard with service health overview, incident timeline, and dependency graph.