API Monitoring
Get alerted when GitHub has issues that could affect your deployments, CI/CD pipelines, and development workflows -- before GitHub's own status page updates.
GitHub is critical infrastructure for millions of developers and companies. When the GitHub API goes down or degrades, your CI/CD pipelines stall, deployments fail, webhooks stop firing, and developer productivity drops to zero. External synthetic monitoring detects these issues in under 2 minutes, giving you a head start on mitigation.
https://api.github.com/zen for general API health
GitHub is critical infrastructure for modern software development. When it goes down, your entire development workflow can stop. According to GitHub's own incident history, they experience multiple service degradations every month, and major outages several times per year.
The problem is that many teams only discover GitHub issues when a developer complains that they can't push code, or when a deployment pipeline silently fails. By then, the issue may have been affecting your team for 10-20 minutes. With external API monitoring, you know within 1-2 minutes.
GitHub Actions, webhooks, and integrations stop working during outages. Your deployments, tests, and automation all depend on GitHub being up. A 15-minute Actions outage can cascade into hours of delayed releases if you don't catch it early.
Teams can't push code, review PRs, or merge changes during outages. Knowing about issues early helps you communicate with your team, switch to local workflows, and plan around the disruption instead of being blindsided.
Many tools fetch data from GitHub's API -- project management, code analysis, deployment platforms, security scanners, and more. Monitoring helps you understand cascading failures across your entire toolchain.
For organizations with compliance requirements, monitoring third-party dependencies like GitHub demonstrates due diligence. You can track uptime history and document your incident response when GitHub has issues.
GitHub maintains an official status page at githubstatus.com. While it's a useful resource, relying on it as your only source of GitHub status information has significant limitations.
GitHub's status page is updated by their incident response team, which means there's always a delay between when an issue starts and when it's reported. In practice, this delay is often 10-20 minutes. External monitoring detects failures in 1-2 minutes.
Not every issue makes it to the status page. Transient errors, regional degradations, and service-specific slowdowns may resolve before GitHub acknowledges them -- but they still impact your workflows while they last.
The status page requires you to actively check it or subscribe to updates. External monitoring pushes alerts directly to your email, Slack, or webhook the moment a problem is detected. You don't have to remember to check anything.
GitHub's status page shows incidents, but it doesn't give you response time trends, uptime percentages, or correlation with your own infrastructure. With external monitoring, you build a complete picture of GitHub's reliability as it affects your workflows.
You can monitor GitHub's status API itself -- https://www.githubstatus.com/api/v2/status.json -- as an additional check. This lets you correlate your external monitoring alerts with GitHub's official incident reports.
GitHub is not a single service. Different endpoints serve different parts of the platform. Choose the ones that matter to your workflow.
https://api.github.com/zen
Lightweight health check endpoint. Returns a random GitHub design philosophy quote. No authentication required, minimal rate limit impact. If this endpoint fails, the entire GitHub API is likely down.
https://api.github.com/repos/{owner}/{repo}/actions/runs
Check GitHub Actions availability for your repository. Requires authentication. Replace {owner}/{repo} with your repo details. This endpoint can be down independently of the core API.
https://api.github.com/rate_limit
Check your current rate limit status. Useful if you have integrations that make frequent API calls. Requires authentication. Also serves as a general API health check since it exercises the auth path.
https://www.githubstatus.com/api/v2/status.json
GitHub's official status page API. Check overall status programmatically. No authentication required. Useful as a secondary data source alongside your direct API monitoring.
https://api.github.com/repos/{owner}/{repo}/hooks
List webhooks for your repository. Requires authentication. If you rely on webhooks for deployment triggers, monitoring this endpoint helps verify that the webhook infrastructure is reachable.
Understanding how GitHub typically fails helps you configure monitoring and plan your incident response. Here are the most common failure patterns.
The most common issue. GitHub API responses that normally take 100-300ms start taking 5-30 seconds, or time out entirely. This often affects specific services (like Actions) while the core API remains responsive.
What to monitor: Response time thresholds. Alert when response time exceeds 3 seconds consistently.
Server errors indicate GitHub's infrastructure is having problems. 502 Bad Gateway errors are especially common during partial outages, where some API nodes are down while others are still serving requests.
What to monitor: HTTP status codes. Alert on any non-200 response from your monitored endpoints.
When you exceed GitHub's rate limits, the API returns HTTP 429 (or sometimes 403 with a rate limit message). This isn't a GitHub outage -- it's your integration hitting limits. But it looks identical to an outage from your application's perspective.
What to monitor: Use authenticated requests for monitoring to avoid conflating rate limits with actual outages.
GitHub webhooks can silently stop delivering events. Your endpoint may be fine, but GitHub's webhook delivery system may be backed up or failing. This is particularly dangerous because there's no error visible on either side until you notice that events have stopped arriving.
What to monitor: Use CronSignal to monitor expected webhook deliveries. If a webhook hasn't arrived within the expected timeframe, you get alerted.
Even when Actions API is "up," workflow runs can be delayed by minutes or hours due to runner queue congestion. The API responds with 200 OK, but your jobs sit in "queued" state indefinitely. This is the hardest failure mode to detect with simple monitoring.
What to monitor: Check the status of recent workflow runs via the Actions API. Look for jobs stuck in "queued" state for longer than expected.
GitHub is not a single service -- it's many components that can fail independently. Understanding which ones your workflow depends on helps you prioritize monitoring and plan for partial outages.
Push, pull, clone, fetch. Core git functionality that developers use constantly. Git operations use a separate infrastructure from the API, so one can be down while the other works.
CI/CD workflows. Outages here stop your automated builds, tests, and deployments. Actions has its own infrastructure and is frequently affected by issues independently of the core API.
Event notifications to external services. Critical for integrations with Slack, Jira, deployment tools. Webhook delivery can fail silently and is one of the most commonly affected services during incidents.
Used by third-party tools, bots, and custom integrations. The REST API and GraphQL API share some infrastructure but can have independent issues.
Static site hosting. If you host documentation or landing pages here, monitor it separately. Pages builds and serving can fail independently of other GitHub services.
Package registry (npm, Docker, Maven, NuGet). Critical if you publish or install packages from GitHub. Container registry issues can block your CI/CD pipeline even when everything else is working.
GitHub enforces rate limits on all API requests. Understanding these limits is essential for setting up monitoring that won't itself be rate-limited, and for distinguishing rate limit errors from actual outages.
If you're monitoring once per minute (60 checks/hour), you're right at the unauthenticated limit. Use a Personal Access Token to avoid rate limit errors that could look like outages.
For the /zen endpoint, unauthenticated monitoring at 5-minute intervals (12 checks/hour) stays well within limits and is sufficient for detecting outages.
Every GitHub API response includes rate limit headers. These are useful for understanding your current consumption.
Setting up GitHub API monitoring takes about 60 seconds with UptimeSignal. Here's the complete process.
Go to app.uptimesignal.io and enter your email. We'll send you a magic link -- no password to remember. The free tier includes 25 monitors with 5-minute check intervals.
Click "Create Monitor" and enter the endpoint URL. For basic GitHub API health monitoring, use:
If you need to monitor authenticated endpoints, generate a Personal Access Token at github.com/settings/tokens with minimal scopes (e.g., repo:status for Actions). Add the header:
1-minute checks (Pro) catch issues faster. 5-minute checks (Free) are sufficient for most teams. GitHub outages typically last 15-60 minutes, so even 5-minute intervals will catch them quickly.
Consider adding separate monitors for GitHub Actions, GitHub Pages, and the status page API. Each service can fail independently, and separate monitors help you quickly identify which specific service is affected.
Having a playbook ready before an outage happens means you respond in minutes, not scramble for hours. Here's a step-by-step guide for when your monitoring alerts you to a GitHub issue.
Check githubstatus.com for official status. Your monitoring alert will likely arrive before their status page updates. Also check @githubstatus on Twitter/X for real-time updates.
Alert developers that GitHub is having issues. This prevents confusion about why builds are failing or PRs aren't merging. A simple Slack message like "GitHub API is currently experiencing issues -- builds and deploys are paused" saves hours of individual debugging.
If your deployment pipeline depends on GitHub, pause it until the outage is resolved. Avoid partial deployments or failed builds that will need cleanup later. If you use feature flags, consider halting feature rollouts.
Developers can continue working with local git. Commits can be pushed once GitHub recovers. For teams with critical uptime needs, consider maintaining a local git mirror or a backup remote on another Git hosting service.
Your UptimeSignal alert will notify you when GitHub is back. Verify a few operations manually before resuming full workflows. Watch for webhook replay (GitHub redelivers missed webhooks after recovery) and potential duplicate events.
GitHub's status page is updated manually and can lag behind actual issues by 10-15 minutes or more. External monitoring catches problems faster and alerts you proactively. Many partial outages affecting specific services like Actions or webhooks are never reported on the status page at all.
Monitor https://api.github.com/zen for general API health. It's lightweight, doesn't require authentication, and has minimal rate limit impact. For more thorough monitoring, add the /rate_limit endpoint with authentication.
Monitor https://api.github.com/repos/{owner}/{repo}/actions/runs with authentication. Alternatively, monitor GitHub's status page API for the Actions component. Keep in mind that Actions can have queue delays even when the API reports 200 OK.
Unauthenticated requests are limited to 60/hour -- exactly one per minute. Use a Personal Access Token (5,000/hour) to avoid rate limit issues that could look like outages. On UptimeSignal's free tier with 5-minute intervals, you'll only use 12 requests/hour.
GitHub typically has several incidents per month, ranging from brief service degradations to major outages lasting hours. You can view their full incident history at githubstatus.com/history. Major outages affecting all services are less frequent (a few times per year), but partial degradations affecting Actions, webhooks, or specific API endpoints happen regularly.
Yes. UptimeSignal's free tier includes 25 monitors with 5-minute check intervals. You can monitor multiple GitHub endpoints including the core API, Actions, Pages, and Packages. Commercial use is allowed on the free tier.
githubstatus.com is GitHub's self-reported status page, updated manually by their team. External monitoring with UptimeSignal sends automated checks to GitHub's API endpoints and alerts you the moment a failure is detected, typically 5-15 minutes before the status page is updated. You also get response time trends and uptime history that the status page doesn't provide.
Check githubstatus.com, notify your team, pause deployments, continue working locally if needed, and monitor for recovery. Have a playbook ready so you're not scrambling during an outage. See our detailed response playbook above for step-by-step guidance.
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