canary

Monitor live production apps for console errors and performance regressions.

15|1|Updated Apr 4, 2026
One-click install
npx skills add https://github.com/howdeploy/NekoFree --skill canary-howdeploy
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: canary
Source: https://github.com/howdeploy/NekoFree/tree/main/skills/canary
Command: npx skills add https://github.com/howdeploy/NekoFree --skill canary-howdeploy

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Post-deploy canary monitoring helps teams detect runtime issues early by watching for console errors, performance regressions, and page failures in live apps, reducing mean time to detection.

Core Features & Use Cases

  • Continuous post-deploy surveillance with automated visual checks and anomaly alerts.
  • Baseline comparison with pre-deploy runs, periodic screenshots, and alert triggers on deviations.
  • Use Case: After a deploy, the canary runs automatically to surface regressions before customers are affected.

Quick Start

Start by enabling canary monitoring in your deployment pipeline to begin detecting errors and anomalies in live production.

Frequently Asked Questions about canary

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I monitor for post-deploy performance regressions in production?

Post-deploy performance monitoring captures periodic screenshots and compares them against pre-deploy baselines to automatically detect production regressions. It triggers alerts on visual deviations to reduce mean time to detection.

What is post-deploy canary monitoring and how does it detect runtime issues?

Post-deploy canary monitoring is an automated health check mechanism that watches live applications for console errors, performance regressions, and page failures. It compares current production states against pre-deploy baselines to surface anomalies.

How do I automate health checks across continuous delivery pipelines?

Automated health checks integrate directly into continuous delivery pipelines to perform post-deploy verification. By running automatically after deployments, they execute proactive surveillance and alert triggers on detected deviations.

Do I need a browse daemon to run automated visual checks on live apps?

Yes, a browse daemon is required to run automated visual checks and perform continuous post-deploy surveillance. It enables the periodic screenshots and baseline comparison logic needed to detect page failures.

What is the best way to catch console errors before users notice in production?

The best way to catch console errors early is enabling post-deploy canary monitoring. It automatically watches live production environments for runtime issues and page failures, alerting you before customers are affected.

Why does post-deploy monitoring require baseline comparisons and periodic screenshots?

Post-deploy monitoring requires baseline comparisons and periodic screenshots to accurately identify visual deviations and performance regressions. This automated anomaly detection logic ensures alerts are triggered only on meaningful post-deploy changes.