metrickit
Use when collecting or analyzing production iOS or iPadOS performance telemetry with MetricKit, including iOS 27 MetricManager async metric or diagnostic reports, hang or crash triage, custom signposts, extended launch measurement, durable export, or iOS 26 MXMetricManager compatibility.
Profile →npx skills add dpearson2699/swift-ios-skills --skill metrickit --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# MetricKit Use MetricKit for low-overhead production telemetry that complements local Instruments and Xcode Organizer analysis. On iOS and iPadOS 27, prefer the Swift-first `MetricManager` report sequences. Keep `MXMetricManager` only in an explicit iOS 26 compatibility branch. > **Beta-sensitive:** The iOS/iPadOS 27 surface below is based on Apple's current beta documentation. It has not been locally compiler-verified because Xcode 27 is unavailable in this environment. Re-check the linked Apple documentation and compile with the shipping Xcode 27 SDK before release. Load [MetricKit Extended and Compatibility Patterns](references/metrickit-patterns.md) when implementing durable ingestion, detailed report analysis, or the iOS 26 compatibility path. ## Contents - [MetricManager Setup](#metricmanager-setup) - [Receiving Metric Reports](#receiving-metric-reports) - [Receiving Diagnostic Reports](#receiving-diagnostic-reports) - [Key Metric Results](#key-metric-results) - [Call Stack Trees](#call-stack-trees) - [Custom Signpost Metrics](#custom-signpost-metrics) - [Durable Export and Upload](#durable-export-and-upload) - [Extended Launch Measurement](#extended-launch-measurement) - [i
- Contents
- MetricManager Setup
- Receiving Metric Reports
- Receiving Diagnostic Reports
- Key Metric Results
- Call Stack Trees
- Custom Signpost Metrics
- Durable Export and Upload
- Extended Launch Measurement
- iOS 26 Compatibility
- Xcode Organizer
- Scope Boundaries
- Common Mistakes
- Review Checklist
What does the metrickit skill do?
Use when collecting or analyzing production iOS or iPadOS performance telemetry with MetricKit, including iOS 27 MetricManager async metric or diagnostic reports, hang or crash triage, custom signposts, extended launch measurement, durable export, or iOS 26 MXMetricManager compatibility.
How do I install it?
Run `npx skills add dpearson2699/swift-ios-skills --skill metrickit --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From dpearson2699/swift-ios-skills, a repository with 963 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.