Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.
GitHubSkillgithub/awesome-copilot/skills/harness-engineering/SKILL.md
Adopt repository-level harness engineering for coding agents. Use when a user wants to prevent repeated AI coding-agent mistakes by turning failures into durable instructions, drift checks, regression tests, failure memory, and adoption reports tailored to the target repository.
GitHubSkillgithub/awesome-copilot/skills/image-annotations/SKILL.md
Annotate screenshots, diagrams, and images with callout rectangles, arrows, labels, and color-coded highlights using PIL. Includes rules for animated GIF annotations with timing and pacing.
GitHubSkillgithub/awesome-copilot/skills/image-manipulation-image-magick/SKILL.md
Process and manipulate images using ImageMagick. Supports resizing, format conversion, batch processing, and retrieving image metadata. Use when working with images, creating thumbnails, resizing wallpapers, or performing batch image operations.
GitHubSkillgithub/awesome-copilot/skills/impediment-prioritization/SKILL.md
Ranks any list of impediments and their countermeasures using a value-stream scoring model (ROI, Cost to Implement, Ease of Deployment, Risk Factor) and a fixed prioritization formula. Use when someone asks to prioritize, rank, sequence, or triage impediments, countermeasures, remediation items, risks, findings, gaps, action items, or backlog entries; or mentions value-stream prioritization, A3 / lean countermeasure ranking, ROI vs. effort scoring, or building a remediation / improvement backlog. Works with GHQR findings, audit results, retrospective action items, risk registers, architecture review gaps, or any free-form `{impediment, countermeasure}` list.
GitHubSkillgithub/awesome-copilot/skills/import-infrastructure-as-code/SKILL.md
Import existing Azure resources into Terraform using Azure CLI discovery and Azure Verified Modules (AVM). Use when asked to reverse-engineer live Azure infrastructure, generate Infrastructure as Code from existing subscriptions/resource groups/resource IDs, map dependencies, derive exact import addresses from downloaded module source, prevent configuration drift, and produce AVM-based Terraform files ready for validation and planning across any Azure resource type.
GitHubSkillgithub/awesome-copilot/skills/incident-postmortem/SKILL.md
Use when an outage, production incident, or significant service degradation has occurred and the team needs to write a structured blameless post-mortem. Triggers on phrases like "write a post-mortem", "incident review", "what went wrong", "outage report", "root cause analysis", or "RCA". Covers timeline reconstruction, contributing factor analysis, impact quantification, and action item generation with owners.
GitHubSkillgithub/awesome-copilot/skills/issue-fields-migration/SKILL.md
Bulk-migrate metadata to GitHub issue fields from two sources: repo labels (e.g. priority labels to a Priority field) and Project V2 fields. Use when users say "migrate my labels to issue fields", "migrate project fields to issue fields", "convert labels to issue fields", "copy project field values to issue fields", or ask about adopting issue fields. Issue fields are org-level typed metadata (single select, text, number, date) that replace label-based workarounds with structured, searchable, cross-repo fields.
GitHubSkillgithub/awesome-copilot/skills/java-add-graalvm-native-image-support/SKILL.md
GraalVM Native Image expert that adds native image support to Java applications, builds the project, analyzes build errors, applies fixes, and iterates until successful compilation using Oracle best practices.
GitHubSkillgithub/awesome-copilot/skills/java-docs/SKILL.md
Ensure that Java types are documented with Javadoc comments and follow best practices for documentation.
GitHubSkillgithub/awesome-copilot/skills/java-helidon/SKILL.md
Get best practices for developing applications with Helidon 4 (SE and MP). Use when working with Helidon SE or Helidon MP, HttpService routing, Helidon DB Client, MicroProfile Config, Helidon Security, or Helidon testing in Java 21+ projects.
GitHubSkillgithub/awesome-copilot/skills/java-junit/SKILL.md
Get best practices for JUnit 5 unit testing, including data-driven tests
GitHubSkillgithub/awesome-copilot/skills/java-mcp-server-generator/SKILL.md
Generate a complete Model Context Protocol server project in Java using the official MCP Java SDK with reactive streams and optional Spring Boot integration.
GitHubSkillgithub/awesome-copilot/skills/java-refactoring-extract-method/SKILL.md
Refactoring using Extract Methods in Java Language
GitHubSkillgithub/awesome-copilot/skills/java-refactoring-remove-parameter/SKILL.md
Refactoring using Remove Parameter in Java Language
GitHubSkillgithub/awesome-copilot/skills/javascript-typescript-jest/SKILL.md
Best practices for writing JavaScript/TypeScript tests using Jest, including mocking strategies, test structure, and common patterns.
GitHubSkillgithub/awesome-copilot/skills/java-springboot/SKILL.md
Get best practices for developing applications with Spring Boot.
GitHubSkillgithub/awesome-copilot/skills/javax-to-jakarta-migration/SKILL.md
Migrate Java code from javax.* to jakarta.* namespace. Use when upgrading to Tomcat 11, Jakarta EE 10, or when javax imports are detected in the codebase.
GitHubSkillgithub/awesome-copilot/skills/kotlin-mcp-server-generator/SKILL.md
Generate a complete Kotlin MCP server project with proper structure, dependencies, and implementation using the official io.modelcontextprotocol:kotlin-sdk library.
GitHubSkillgithub/awesome-copilot/skills/kotlin-springboot/SKILL.md
Get best practices for developing applications with Spring Boot and Kotlin.
GitHubSkillgithub/awesome-copilot/skills/landing-page-conversion-audit/SKILL.md
Audit a landing page, sales page or checkout page for conversion leaks and return a fix list ordered by expected revenue impact. Use when asked to review, critique or improve a landing page, sales page, opt-in page, product page or checkout flow, when conversion rate is low, when paid traffic is not converting, or when someone asks "why isn't this page converting" or wants a CRO / landing page review.
A folder with a SKILL.md file: a name, a description of when to use it, and instructions. Claude loads a skill only when the task matches its description.
Copy the folder into your project's .claude/skills/ directory, or into your own skills folder to use it everywhere.
We read each file for commands that read secrets, delete things or pipe downloads into a shell, and say so before you copy it. No warning is not a promise that a file is safe.
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