claude-code-marketplace skills

phuryn/pm-skills

Skill Claude CodeCodex

Part of pm-data-analytics

Analyze A/B test results with statistical significance, sample size validation, confidence intervals, and ship/extend/stop recommendations. Use when evaluating experiment results, checking if a test reached significance, interpreting split test data, or deciding whether to ship a variant.

phuryn/pm-skills

Skill Claude CodeCodex

Part of pm-data-analytics

Perform cohort analysis on user engagement data — retention curves, feature adoption trends, and segment-level insights. Use when analyzing user retention by cohort, studying feature adoption over time, investigating churn patterns, or identifying engagement trends.

phuryn/pm-skills

Skill Claude CodeCodex

Part of pm-data-analytics

Generate SQL queries from natural language descriptions. Supports BigQuery, PostgreSQL, MySQL, and other dialects. Reads database schemas from uploaded diagrams or documentation. Use when writing SQL, building data reports, exploring databases, or translating business questions into queries.

wondelai/skills

Skill Claude CodeCodex

Navigate the technology adoption lifecycle from early adopters to mainstream market. Use when the user mentions "crossing the chasm", "beachhead segment", "whole product", "early adopters vs mainstream", "tech go-to-market", "bowling pin strategy", "technology adoption lifecycle", "pragmatist buyers", "growth stalled…

wondelai/skills

Skill Claude CodeCodex

Apply foundational design principles: affordances, signifiers, constraints, feedback, and conceptual models. Use when the user mentions "why is this confusing", "affordance", "error prevention", "discoverability", "human-centered design", "mental model", "mapping", "seven stages of action", "users keep making…

wondelai/skills

Skill Claude CodeCodex

Audit, write, and improve developer documentation using Google's Developer Documentation Style Guide and Technical Writing courses. Use this skill for any documentation work, even when the user names no style guide: "audit our docs", "review this README", "write a README", "getting started guide", "how-to or…

NikiforovAll/claude-code-rules

Skill Claude CodeCodex

This skill should be used when the user wants to add components (commands, agents, skills, hooks, or MCP servers) to the Component Reference section of the website.

NikiforovAll/claude-code-rules

Skill Claude CodeCodex

Part of reflect

Summarize WHAT WAS SHIPPED in a Claude Code session as a self-contained HTML slide deck — the elevator pitch (problem, solution, decisions, artifacts, verification, gaps), not a play-by-play of tool calls or debugging detours. Defaults to the current in-context session; optionally accepts a session ID or JSONL path.…

NikiforovAll/claude-code-rules

Skill Claude CodeCodex

Part of reflect

Visualize a Claude Code session as a quest/skill tree — a navigable SVG graph where nodes are turns and edges show flow, with distinct visual encoding for normal flow, dead-ends, corrections, retries, reversals, and backtracking. Sibling to /reflect (which produces an incidents+recommendations dashboard); this one…

TAJD/economist-style-guide-plugin

Skill Claude CodeCodex

Part of economist-style

Apply The Economist style guide to written content. Use when editing markdown, HTML, documentation, or any written text that needs professional editing for clarity, precision, and brevity. Detects weasel words, fillers, passive voice, and style issues.

khendzel/skills-janitor

Skill Claude CodeCodex

Find new skills on GitHub or check a specific skill before installing. Use when the user wants to search for skills, evaluate a skill URL, check overlap and security risk before installing, or compare a local skill against alternatives. Trigger with '/janitor-discover'.

khendzel/skills-janitor

Skill Claude CodeCodex

Automatically fix skill problems (safe preview first). Also use with --prune to find and remove broken symlinks, empty directories, and orphaned skills. Trigger with '/janitor-fix'.

khendzel/skills-janitor

Skill Claude CodeCodex

Show whether each skill is earning its context-window cost — combined tokens-used view sorted by waste. Use when the user asks 'are my skills worth it', 'what's my context budget', 'which skills are dead weight', or wants to audit skill value, token cost, or usage. Trigger with '/janitor-value'.

sneg55/agent-starter

Skill Claude CodeCodex

Part of agent-starter

Apply agent-starter patterns to an EXISTING project - audits the codebase, proposes components by invasiveness tier (hooks, skills, CLAUDE.md, lint configs, patterns), and applies only what the developer approves. Use when the user says adopt, retrofit, "apply agent-starter to this project", or wants starter patterns…

sneg55/agent-starter

Skill Claude CodeCodex

Part of agent-starter

Full git workflow - creates branch, commits, pushes, and creates or updates a PR with summary and test plan.

sneg55/agent-starter

Skill Claude CodeCodex

Part of agent-starter

Create a single well-crafted git commit from current changes. Analyzes diff, follows repo's commit style, and writes a concise "why not what" message.

Productfculty-aipm/PM-Copilot-by-Product-Faculty

Skill Claude CodeCodex

Part of PM-Copilot-by-Product-Faculty

Use this skill when the user asks "how do I become a senior PM", "what does senior PM actually mean", "I want to get promoted to senior", "what's the difference between PM and senior PM", "I've been a PM for 2–3 years and want to grow", "my manager says I need to work more strategically", "I'm stuck at PM level", or…

Productfculty-aipm/PM-Copilot-by-Product-Faculty

Skill Claude CodeCodex

Part of PM-Copilot-by-Product-Faculty

Use this skill when the user asks to "design an eval suite", "build evals for my AI feature", "create an evaluation framework", "how do I evaluate my AI", "what evals should I run", "build an eval system", or wants to create a systematic evaluation framework for an AI-powered product feature. Typically run after…

Productfculty-aipm/PM-Copilot-by-Product-Faculty

Skill Claude CodeCodex

Part of PM-Copilot-by-Product-Faculty

Use this skill when the user says "I'm the first PM", "founding PM", "I joined a startup as the only PM", "how do I set up PM processes from scratch", "no PM infrastructure exists", "I'm building the PM function", "what should a first PM do in 90 days", or is navigating the unique challenges of being an early-stage PM…

alexei-led/cc-thingz

Skill Claude CodeCodex

Improve test design, speed, and coverage with behavior-focused tests, useful seams, characterization tests, TDD, and test refactoring. Use when improving tests, optimizing slow suites, adding coverage, refactoring brittle tests, removing test waste, or working test-first. NOT for fixing production bugs (use…

alexei-led/cc-thingz

Skill Claude CodeCodex

Use when reviewing changed code, PRs, diffs, or specific files. Finds evidence-backed defects in security, correctness, tests, reliability, performance, maintainability, and docs. Supports quick, standard, deep, team, and external-review modes. NOT for repo-wide architecture review, general codebase exploration…

alexei-led/cc-thingz

Skill Claude CodeCodex

Use when asked to lint, audit, review, or score AI-facing instruction files such as SKILL.md, AGENT.md, AGENTS.md, CLAUDE.md, platform body.md files, prompt files, rules, policies, and agent-facing references. NOT for plugin manifests, application code review, harness configuration review, ordinary docs, tests, or…

noluyorAbi/claude-code-recap

Skill Claude CodeCodex

Part of claude-code-recap

Show recent Claude Code sessions across all projects, so the user can re-enter work after a reboot or context switch. Lists per session the absolute project path, a short summary, where the session stopped, last activity, turn count, git branch, model, and a ready-to-paste resume command; can search sessions by what…

Joncik91/ucai

Skill Claude CodeCodex

Part of ucai

This skill should be used when the user asks to "design system architecture", "evaluate microservices vs monolith", "create architecture diagrams", "analyze dependencies", "choose a database", "plan for scalability", "make technical decisions", or "review system design".