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© 2026 PromptLLM, a trading name of Properly Ads Ltd

Battle-tested prompts from a prompt engineering expert

The World’s Number 1 Prompt Directory

A curated, searchable library of the best prompts, vibe coding templates, Claude Skills, image generation and bot templates, all in one place.

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All 3,404Claude Skills 416Bots 145General Prompts 1,690Image Generation 1,153

3,404 prompts

Claude Skills

Save Knowledge to Memory

Explicitly save important knowledge to auto-memory with timestamp and context. Use when a discovery is too important to rely on auto-capture.

Writes an explicit entry to auto-memory when something is important enough that you don't want to rely on the agent noticing it automatically.
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#engineering#claude skill
Claude Skills

Scenario War Room

Cross-functional what-if modeling for cascading multi-variable scenarios. Unlike single-assumption stress testing, this models compound adversity across all business functions simultaneously.

Model cascading what-if scenarios across all business functions. Not single-assumption stress tests — compound adversity that shows how one problem creates…
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#leadership#claude skill
Claude Skills

Schema Markup Implementation

Schema Markup Implementation skill. When the user wants to implement, audit, or validate structured data (schema markup) on their website.

You are an expert in structured data and schema.org markup. Your goal is to help implement, audit, and validate JSON-LD schema that earns rich results in…
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#marketing#claude skill
Claude Skills

Scrum Master

Advanced Scrum Master skill for data-driven agile team analysis and coaching. Use when the user asks about sprint planning, velocity tracking, retrospectives, standup facilitation, backlog grooming, story points, burndown charts, blocker resolution, or agile team health.

Data-driven Scrum Master skill combining sprint analytics, probabilistic forecasting, and team development coaching. The unique value is in the three Python…
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#project management#claude skill
Claude Skills

Secrets Vault Manager

Secrets Vault Manager skill. Use when the user asks to set up secret management infrastructure, integrate HashiCorp Vault, configure cloud secret stores (AWS Secrets Manager, Azure Key Vault, GCP Secret Manager), implement secret rotation, or audit secret access patterns.

Tier: POWERFUL Category: Engineering Domain: Security / Infrastructure / DevOps --- Production secret infrastructure management for teams running HashiCorp…
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#engineering#claude skill
Claude Skills

Security Guidance Hook

PreToolUse security-anti-pattern hook for the agent Code. Catches 12 common security risks (command injection, XSS, SQL injection, unsafe deserialization, GitHub Actions workflow injection, eval/new Function code injection) BEFORE the Edit/Write/MultiEdit operation completes.

A PreToolUse hook that blocks 12 common security anti-patterns before your coding agent writes them. This skill is a hook, not a slash command. Once…
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#engineering#claude skill
Claude Skills

Security Penetration Testing

Security Penetration Testing skill. Use when the user asks to perform security audits, penetration testing, vulnerability scanning, OWASP Top 10 checks, or offensive security assessments. Covers static analysis, dependency scanning, secret detection, API security testing, and pen test report generation.

Hands-on offensive security testing skill for finding vulnerabilities before attackers do. This is NOT compliance checking (see senior-secops) or security…
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#engineering#claude skill
Claude Skills

Self-Improving Agent

Curate the agent Code's auto-memory into durable project knowledge. Analyze MEMORY.md for patterns, promote proven learnings to CLAUDE.md and .claude/rules/, extract recurring solutions into reusable skills.

Auto-memory captures. This plugin curates. your coding agent's auto-memory (v2.1.32+) automatically records project patterns, debugging insights, and your…
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#engineering#claude skill
Claude Skills

Senior Architect

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".

Architecture design and analysis tools for making informed technical decisions.
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#engineering#claude skill
Claude Skills

Senior Backend Engineer

Designs and implements backend systems including REST APIs, microservices, database architectures, authentication flows, and security hardening.

Backend development patterns, API design, database optimization, and security practices. ---
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#engineering#claude skill
Claude Skills

Senior Computer Vision Engineer

Computer vision engineering skill for object detection, image segmentation, and visual AI systems. Covers CNN and Vision Transformer architectures, YOLO/Faster R-CNN/DETR detection, Mask R-CNN/SAM segmentation, and production deployment with ONNX/TensorRT.

Production computer vision engineering skill for object detection, image segmentation, and visual AI system deployment.
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#engineering#claude skill
Claude Skills

Senior Data Engineer

Data engineering skill for building scalable data pipelines, ETL/ELT systems, and data infrastructure. Expertise in Python, SQL, Spark, Airflow, dbt, Kafka, and modern data stack.

Production-grade data engineering skill for building scalable, reliable data systems.
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#engineering#claude skill
Claude Skills

Senior Data Scientist

World-class senior data scientist skill specialising in statistical modeling, experiment design, causal inference, and predictive analytics.

World-class senior data scientist skill for production-grade AI/ML/Data systems.
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#engineering#claude skill
Claude Skills

Senior Devops

Comprehensive DevOps skill for CI/CD, infrastructure automation, containerization, and cloud platforms (AWS, GCP, Azure). Includes pipeline setup, infrastructure as code, deployment automation, and monitoring.

Complete toolkit for senior devops with modern tools and best practices.
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#engineering#claude skill
Claude Skills

Senior Frontend

Frontend development skill for React, Next.js, TypeScript, and Tailwind CSS applications. Use when building React components, optimizing Next.js performance, analyzing bundle sizes, scaffolding frontend projects, implementing accessibility, or reviewing frontend code quality.

Frontend development patterns, performance optimization, and automation tools for React/Next.js applications.
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#engineering#claude skill
Claude Skills

Senior Fullstack

Fullstack development toolkit with project scaffolding for Next.js, FastAPI, MERN, and Django stacks, code quality analysis with security and complexity scoring, and stack selection guidance.

Fullstack development skill with project scaffolding and code quality analysis tools. ---
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#engineering#claude skill
Claude Skills

Senior ML Engineer

ML engineering skill for productionizing models, building MLOps pipelines, and integrating LLMs. Covers model deployment, feature stores, drift monitoring, RAG systems, and cost optimization.

Production ML engineering patterns for model deployment, MLOps infrastructure, and LLM integration. ---
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#engineering#claude skill
Claude Skills

Senior Project Management Expert

Senior Project Manager for enterprise software, SaaS, and digital transformation projects. Specializes in portfolio management, quantitative risk analysis, resource optimization, stakeholder alignment, and executive reporting.

Strategic project management for enterprise software, SaaS, and digital transformation initiatives. Provides portfolio management capabilities, quantitative…
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#project management#claude skill
Claude Skills

Senior Prompt Engineer

Senior Prompt Engineer skill. Use when the user asks to optimize prompts, design prompt templates, evaluate LLM outputs with an eval set, measure RAG retrieval quality, validate agent/tool configurations, analyze token usage, or design structured-output contracts.

Eval-driven prompt engineering, RAG quality measurement, and agent workflow validation. Everything here is model-agnostic by design: techniques are framed…
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#engineering#claude skill
Claude Skills

Senior QA Engineer

Generates unit tests, integration tests, and E2E tests for React/Next.js applications.

Test automation, coverage analysis, and quality assurance patterns for React and Next.js applications. ---
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#engineering#claude skill
Claude Skills

Senior SecOps Engineer

Senior SecOps engineer skill for application security, vulnerability management, compliance verification, and secure development practices.

Complete toolkit for Security Operations including vulnerability management, compliance verification, secure coding practices, and security automation. ---
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#engineering#claude skill
Claude Skills

SEO Audit

SEO Audit skill. When the user wants to audit, review, or diagnose SEO issues on their site.

You are an expert in search engine optimization. Your goal is to identify SEO issues and provide actionable recommendations to improve organic search…
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#marketing#claude skill
Claude Skills

Shared-Code Opportunity Finder

Reviews recent work for code that is genuinely worth extracting into shared libraries and recommends what to extract, watch or leave, without editing anything. Use when asked to "find shared code", "deslop", "what should be a shared lib", or to spot copy-pasted helpers after a burst of development.

Find up to five new opportunities to share code, then recommend the best three. Favor areas people are actively changing and changes that delete more code…
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#engineering#claude skill
Claude Skills

Ship Gate

Pre-production audit that scans a codebase for security, database, deployment, code quality, AI/LLM, dependency, frontend, and observability issues. Intercepts deploy commands and blocks until critical items pass.

Pre-production audit that scans a codebase and reports pass/fail/manual across 8 categories before anything ships.
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#engineering#claude skill
Samuel

Samuel

On Twitter / X

  • @PromptLLM – 97,000 followers
  • @ProperlyAds – 5,700 followers

I am the owner and founder of both Properly Ads, a digital marketing agency specialising in paid ads, and PromptLLM, one of the biggest X accounts in the AI space. I have used AI extensively over the last few years to grow my digital marketing agency to five figures a month and to drive my own personal growth. I am now on a mission to give people the tools to get the highest possible output from AI and to transform every area of their lives.

Have a question? Email me at sam@promptllm.co

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