Progressive-disclosure instructions an agent loads on demand. Cheap until invoked, which is why the per-session figure on each card is usually two digits.
Skill Claude CodeCodex
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.
xlbaoxl/interactive-map-builder
Skill Codex
Turn existing spatial or coordinate data into portable, browser-openable interactive map files and report-ready figures. Use when the user wants parcels, buildings, facilities, parking, roads, water, green space, projects, or Excel/CSV coordinates presented as a searchable, filterable, sortable map, map-and-list page…
Skill Claude CodeCodex
Onboard an unfamiliar NixOS or Home Manager flake by running nix-agent inspect-flake and generating AGENTMAP.md, CLAUDE.md, and .mcp.json from observed facts. Use on first contact with a config repo, when the user asks how the flake is laid out, or when making the repo agent-ready. Requires the nix-agent MCP server.
jahro-console/unity-agent-skills
Skill Claude CodeCodex
Reviews and improves Debug.Log usage in Unity C# projects following structured logging principles: context tags, severity contracts, boundary-based placement, and criticality tiers. Detects common antipatterns (naked Debug.Log, logging in Update, stringly-typed errors), adds missing logs at system/state/error/external…
ElmatadorZ/Genesis-Mind-ClaudeSkill-Agent
Skill Claude CodeCodex
Use this skill for ANY of the following — do not skip it even if the query seems simple: strategic decisions, business analysis, thesis building, complex problem solving, geopolitical analysis (non-market), philosophical reasoning, academic research, system design, decision under uncertainty, long-form thinking, or…
Skill Claude CodeCodex
A read-only tool for collecting all comments from a Bilibili video, including replies and pinned comments. Bilibili is a Chinese video-sharing platform.
lunashia/code-generation-skill
Skill Claude Code
Use when the task involves generating, modifying, debugging, validating, or reviewing code. Do not use for non-code tasks.
ChinaDaaS-Department/qibook-skills
Skill Claude Code
A Chinese-language research procedure for producing a broad company report from more than 20 categories of business data. It identifies the type of organization and selects a suitable report format.
geekjourneyx/github-demand-radar
Skill Claude CodeCodex
A research workflow for examining issues and pull requests in a GitHub repository to find unmet needs that could become commercial tools. Pull requests are proposed code changes, and issues are reported problems or requested improvements.
Skill Claude CodeCodex
A guide for creating and checking editable Office files, including PowerPoint presentations, Word documents, PDFs, and Excel workbooks. It also covers checking layout, formulas, and file structure.
Skill Claude CodeCodex
Build and debug MCP App-enabled tools in existing projects scaffolded by create-chapplin. Use when extending tools/.tsx with defineTool and defineApp , wiring structuredContent and meta for UI data flow, handling runtime differences across react/preact/solid/hono targets, or troubleshooting chapplin preview and…
formulahendry/agent-skill-code-runner
Skill Claude CodeCodex
Run code snippets in 30+ programming languages including JavaScript, Python, TypeScript, Java, C, C++, Go, Rust, Ruby, PHP, and more. Use when the user wants to execute code, test algorithms, verify output, run scripts, or check code behavior. Supports both interpreted and compiled languages.
Skill Codex
Use when thinking through or changing a production software architecture, or when reviewing or verifying architecture work inside the same design flow: greenfield systems, decomposition, migration, scale, reliability, security, data ownership, distributed workflows, clients, platform governance, or rewrites. Use…
Skill Codex
Create or overhaul polished, trustworthy GitHub repository READMEs with a logo, meaningful badges, hero visuals, navigation, quickstart instructions, verified links, sponsor content, and repository metadata. Use when a user asks to write, beautify, professionalize, brand, audit, or publish a project README, especially…
Skill Claude Code
Run the review-claude stage of the sdlc workflow.
useful-skills/job-application-skills
Skill Claude CodeCodex
A company-research skill that investigates whether an employer appears financially and operationally safe. It separates official information, informal reports, and public records such as filings or labor data.
onfire7777/universal-ai-skills-library
Skill Claude CodeCodex
Use for verifying business requirements with executable specifications using BDD frameworks. Covers Cucumber (Java, JS, Ruby), SpecFlow/Reqnroll (C#), Behave (Python), Gauge (ThoughtWorks), and Godog (Go). Includes Gherkin feature files, step definitions, BDD workflow, and cross-language examples. USE FOR: Cucumber…
Skill Claude Code
Full API lifecycle management through Postman. Sync OpenAPI specs to collections, generate typed client code, run API tests, create mock servers, publish documentation, audit security against OWASP Top 10, and discover APIs across workspaces. Requires the Postman MCP Server. Use this skill when the user mentions…
Skill Claude CodeCodex
Cryptographic tool schema verification to prevent MCP Rug Pull attacks — ECDSA P-256 signing, SHA-256 hashing, TOFU key pinning, .well-known discovery, signed revocation documents, and (v1.4-alpha across all four languages) signature expiration, DNS TXT cross-verification, and schema version binding (lineage chain).
ferdinandobons/diagram-creator-skill
Skill Claude CodeCodex
Generate beautiful, production-ready architecture diagrams as self-contained HTML files from any input. Use this skill whenever the user wants to create a diagram, schema, flowchart, network diagram, system visualization, timeline, org chart, or any visual representation of concepts — technical or non-technical.…
Skill Claude CodeCodex
Optimize Muggle AI's customer-facing text (MCP tool descriptions, skill descriptions, plugin metadata, hooks) so that AI agents prioritize muggle tools for E2E acceptance testing, UI validation, and browser testing. Internal tool — lives outside the published plugin surface.
Skill Claude Code
Claude Engram persistent memory — quick reference for all MCP tools and automatic hook behaviors. Use when you need to remember how to store, search, or manage memories, or query session history.
eric861129/Workflow-skill-router
Skill Claude CodeCodex
A routing guide for choosing the right coding-agent skill based on the size, stages, and long-term nature of a task. It can also account for skills the user or workspace has already specified.
Skill Claude Code
Use when adding a new external data source (API, scraper, etc.) to propertycore. Walks through the complete 6-step process with patterns from existing implementations.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: