Skills.
Give your AI a better way to work.
A skill is a set of written instructions that teaches an AI how to do one job the way it should be done: review a pull request, plan a migration, write the release notes.
Install one here and it travels with your account into Claude, Claude Code, Cursor and every other client you sign in with.
Category: Dev tools
20,347 results · page 499 of 679
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voip-sip-attackSkillDev tools
Voice over IP (VoIP) systems use the Session Initiation Protocol (SIP) for call signaling, the Real-time Transport Protocol (RTP) for media streaming, and the Inter-Asterisk eXchange protocol (IAX2) for alternative VoIP communication.
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web-access-controlSkillDev tools
Broken Access Control (OWASP Top 10 2025 - A01) attacks and defense — covering core attack surfaces including IDOR (Insecure Direct Object Reference), vertical/horizontal privilege escalation, path traversal, and permission bypass.
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windows-compatibilitySkillDev tools
Cross-platform path handling and command patterns
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adding-a-ruleSkillDev tools
Use when adding a new ryl lint rule or changing an existing rule's wiring. Walks the multi-site checklist (rule module, registration, dispatch, TOML config, tests, docs) where a missed site usually trips a guard test rather than shipping silently.
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akka-net-best-practicesSkillDev tools
Critical Akka.NET best practices including EventStream vs DistributedPubSub, supervision strategies, error handling, Props vs DependencyResolver, work distribution patterns, and cluster/local mode abstractions for testability.
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aspire-configurationSkillDev tools
Configure Aspire AppHost to emit explicit app config via environment variables; keep app code free of Aspire clients and service discovery.
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aspire-integration-testingSkillDev tools
Write integration tests using .NET Aspire's testing facilities with xUnit. Covers test fixtures, distributed application setup, endpoint discovery, and patterns for testing ASP.NET Core apps with real dependencies.
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aspire-service-defaultsSkillDev tools
Create a shared ServiceDefaults project for Aspire applications. Centralizes OpenTelemetry, health checks, resilience, and service discovery configuration across all services.
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axiom-accessibility-diagSkillDev tools
Use when fixing VoiceOver issues, Dynamic Type violations, color contrast failures, touch target problems, keyboard navigation gaps, or Reduce Motion support - comprehensive accessibility diagnostics with WCAG compliance, Accessibility Inspector workflows, and App Store Review preparation for iOS/ma
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axiom-app-attestSkillDev tools
Use when implementing app integrity verification, preventing fraud with DCAppAttestService, validating requests from legitimate app instances, using DeviceCheck for promotional abuse prevention, or needing server-side attestation/assertion validation. Covers key generation, attestation, assertion, r
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axiom-app-shortcuts-refSkillDev tools
Use when implementing App Shortcuts for instant Siri/Spotlight availability, configuring AppShortcutsProvider, adding suggested phrases, or debugging shortcuts not appearing - covers complete App Shortcuts API for iOS 16+
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axiom-app-store-refSkillDev tools
App Store submission reference — complete metadata field specs, App Review guideline index, privacy manifest schema, age rating system, export compliance, EU DSA requirements, IAP review pipeline, and WWDC25 submission changes
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axiom-app-store-submissionSkillDev tools
Use when preparing ANY app for App Store submission - enforces pre-flight checklist, rejection prevention, privacy compliance, and metadata completeness to prevent common App Store rejections
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axiom-asc-mcpSkillDev tools
Use when automating App Store Connect via MCP — submit builds, manage TestFlight, respond to reviews, triage feedback programmatically
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axiom-auto-layout-debuggingSkillDev tools
Use when encountering "Unable to simultaneously satisfy constraints" errors, constraint conflicts, ambiguous layout warnings, or views positioned incorrectly - systematic debugging workflow for Auto Layout issues in iOS
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axiom-build-debuggingSkillDev tools
Use when encountering dependency conflicts, CocoaPods/SPM resolution failures, "Multiple commands produce" errors, or framework version mismatches - systematic dependency and build configuration debugging for iOS projects. Includes pressure scenario guidance for resisting quick fixes under time cons
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axiom-build-performanceSkillDev tools
Use when build times are slow, investigating build performance, analyzing Build Timeline, identifying type checking bottlenecks, enabling compilation caching, or optimizing incremental builds - comprehensive build optimization workflows including Xcode 26 compilation caching
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axiom-camera-capture-diagSkillDev tools
camera freezes, preview rotated wrong, capture slow, session interrupted, black preview, front camera mirrored, camera not starting, AVCaptureSession errors, startRunning blocks, phone call interrupts camera
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axiom-camera-capture-refSkillDev tools
Reference — AVCaptureSession, AVCapturePhotoSettings, AVCapturePhotoOutput, RotationCoordinator, photoQualityPrioritization, deferred processing, AVCaptureMovieFileOutput, session presets, capture device APIs
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axiom-cloud-syncSkillDev tools
Use when choosing between CloudKit vs iCloud Drive, implementing reliable sync, handling offline-first patterns, or designing sync architecture - prevents common sync mistakes that cause data loss
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axiom-codableSkillDev tools
Use when working with Codable protocol, JSON encoding/decoding, CodingKeys customization, enum serialization, date strategies, custom containers, or encountering "Type does not conform to Decodable/Encodable" errors - comprehensive Codable patterns and anti-patterns for Swift 6.x
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axiom-code-signingSkillDev tools
Use when setting up code signing, managing certificates, configuring provisioning profiles, debugging signing errors, setting up CI/CD signing, or preparing distribution builds. Covers certificate lifecycle, automatic vs manual signing, entitlements, fastlane match, Keychain management, and App Stor
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axiom-code-signing-diagSkillDev tools
Use when code signing fails during build, archive, or upload — certificate not found, provisioning profile mismatch, errSecInternalComponent in CI, ITMS-90035 invalid signature, ambiguous identity, entitlement mismatch. Covers certificate, profile, keychain, entitlement, and archive signing diagnost
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axiom-code-signing-refSkillDev tools
Use when needing certificate CLI commands, provisioning profile inspection, entitlement extraction, Keychain management scripts, codesign verification, fastlane match setup, Xcode build settings for signing, or APNs .p8 vs .p12 decision. Covers complete code signing API and CLI surface.
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axiom-core-dataSkillDev tools
Use when choosing Core Data vs SwiftData, setting up the Core Data stack, modeling relationships, or implementing concurrency patterns - prevents thread-confinement errors and migration crashes
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axiom-core-data-diagSkillDev tools
Use when debugging schema migration crashes, concurrency thread-confinement errors, N+1 query performance, SwiftData to Core Data bridging, or testing migrations without data loss - systematic Core Data diagnostics with safety-first migration patterns
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axiom-core-location-diagSkillDev tools
Use for Core Location troubleshooting - no location updates, background location broken, authorization denied, geofence not triggering
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axiom-deep-link-debuggingSkillDev tools
Use when adding debug-only deep links for testing, enabling simulator navigation to specific screens, or integrating with automated testing workflows - enables closed-loop debugging without production deep link implementation
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axiom-energySkillDev tools
Use when app drains battery, device gets hot, users report energy issues, or auditing power consumption - systematic Power Profiler diagnosis, subsystem identification (CPU/GPU/Network/Location/Display), anti-pattern fixes for iOS/iPadOS
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axiom-energy-diagSkillDev tools
Symptom-based energy troubleshooting - decision trees for 'app at top of battery settings', 'phone gets hot', 'background drain', 'high cellular usage', with time-cost analysis for each diagnosis path
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What is a skill?
A skill is plain text, usually a SKILL.md file and the scripts it refers to, written for an AI rather than for a person. It carries the steps, the house rules and the examples a good answer needs, so you stop pasting the same briefing into every new chat.
63,068 of the 63,139 skills listed here can be served through ahel today, and they come from public repositories. Each one has its own page with the instructions themselves on it, so you can read what a skill will tell your AI to do before you install it.
Install one and every AI you use gets it
Installing a skill adds it to your workspace and turns it on in the same step. Claude Code surfaces it as a slash command; any client can read the full instructions with the skill_read tool.
Nothing is copied into a project folder. The instructions are served from your account, so the same skill is there in every AI you connect, and turning it off removes it from all of them at once.