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    AI Agent Skills Marketplace

    Skills are portable instruction sets that extend what AI coding agents can do. Each skill is a SKILL.md file your agent reads to learn new capabilities, from writing tests to deploying infrastructure. Compatible with Claude Code, OpenClaw, Codex CLI, Cursor, and 20+ agents. Browse the marketplace to find skills built by the community, or publish your own.

    12 skills found

    Legacy Code Modernization Planner for AI Coding Agents

    by Shandra

    $9.99

    Creates safe modernization roadmaps for old, messy, undocumented, or fragile codebases, including risk audits, refactor phases, dependency reviews, testing plans, migration steps, and AI coding prompts.

    2
    3
    devopslegacy-codemodernization+2

    Refactoring Legacy Codebases with Grok (v1.3.2)

    by Markus Isaksson

    $6

    A disciplined, safety-first framework for refactoring legacy codebases using incremental modernization patterns.

    2
    groklegacy-codemodernization+4

    Safe Code Changes with Grok (v1.6.1)

    by Markus Isaksson

    $7

    A rigorous, safety-first framework for planning and executing code changes in complex or production environments.

    2
    groklegacy-codeproduction-changes+3

    Legacy Banking Infrastructure Support Skill

    by Shandra

    $50

    Creates structured troubleshooting runbooks for legacy banking systems with incident classification, dependency mapping, log review checklists, escalation paths, rollback guidance, and post-incident summaries.

    2
    bankingcore-bankingdevops+9

    legacy-system-archaeologist

    by J. Trejo

    Free

    Reconstruct architecture and map risks in inherited legacy codebases with evidence-based auditing and migration plans.

    2
    0
    architecturelegacy-codemigration+2

    Codebase Explainer & Onboarding Mapper — Understand Any Unfamiliar Repo Fast (Architecture, Key Modules, How to Run It)

    by PubsProToolkit

    $14

    Point it at an unfamiliar or inherited repo and quickly understand it. Maps the architecture, identifies the key modules and entry points, traces the core end-to-end flows, surfaces the conventions and gotchas, and assembles a clean ONBOARDING.md — turning a strange codebase into a clear mental model fast. Built for the moment you join a project, take one over, or have to explain a repo before changing it.

    1
    codebaseonboardingcode-explainer+7

    tdd-coach

    by Matthew King

    Free

    Master Red-Green-Refactor with an opinionated TDD mentor that guides coding, reviews PRs, and secures legacy systems.

    2
    2
    tddtestingunit-testing+2

    Dependency Upgrade & Framework Migration Planner for AI Coding Agents

    by Shandra

    $55

    Plans safe dependency upgrades and framework migrations for legacy applications with risk analysis, compatibility mapping, test planning, rollback strategy, and phased AI coding prompts.

    2
    dependency-upgradeframework-migrationai-coding-agents+6

    converting-email-templates

    by Daryna Ivanova

    Free

    Migrate legacy email templates from SendGrid, Mailgun, and others to Mailtrap-compatible Handlebars syntax.

    1
    0
    email-marketinghandlebarsmigration-tool+3

    LegacyShield

    by Lobbi @ LegacyShield

    Free

    Secure, zero-knowledge encrypted vault for agents to store and manage sensitive documents and digital legacy assets.

    1
    0
    data-persistencedigital-legacyencryption+3

    windows-desktop-automation-v2

    by Kaymue

    Free

    Automate any Windows app with UI Automation, OCR, and hotkeys. Drive legacy/Citrix/RDP UIs. Python scripts for pywinauto + OpenCV.

    1
    0
    windowsautomationdesktop+5

    codebase-archaeology

    by Kaymue

    Free

    Reverse-engineer unfamiliar code. Dependency map, dead code, risk hotspots, onboarding guide. Survive inheriting 200k lines.

    1
    0
    code-analysisrefactoringdocumentation+4

    Explore Skills by Category

    Frontend & Design

    Discover AI agent skills that accelerate UI development, component generation, CSS styling, and design system workflows. These skills help agents write cleaner front-end code and ship pixel-perfect interfaces faster.

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    Testing & QA

    Equip your AI coding agent with skills for writing unit tests, integration tests, and end-to-end tests. Improve code coverage, catch regressions early, and automate quality assurance workflows.

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    DevOps & Deployment

    Skills that help AI agents manage CI/CD pipelines, Docker containers, infrastructure-as-code, and cloud deployments. Automate your deployment workflows and reduce operational overhead.

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    Code Review

    Give your AI agent the ability to perform thorough code reviews, identify anti-patterns, suggest refactors, and enforce coding standards automatically across your codebase.

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    Documentation

    Skills that help AI agents generate READMEs, API docs, inline comments, changelogs, and technical writing. Keep your documentation accurate and up-to-date with minimal effort.

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    Productivity

    Boost your development workflow with skills for task management, code scaffolding, boilerplate generation, and workflow automation. Help your AI agent save you hours of repetitive work.

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    Data Engineering

    Skills for working with databases, data pipelines, ETL processes, SQL optimization, and data modeling. Help your AI agent handle complex data transformations and schema design.

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    API Development

    Equip your AI agent with skills for building REST APIs, GraphQL endpoints, authentication flows, and API integrations. Design, document, and ship robust APIs faster.

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