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© 2026 PromptLLM, a trading name of Properly Ads Ltd

Battle-tested prompts from a prompt engineering expert

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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

Systematic Debugging

Systematic Debugging skill. Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes

Core principle: ALWAYS find root cause before attempting fixes. Symptom fixes are failure. Violating the letter of this process is violating the spirit of…
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#engineering#claude skill
Claude Skills

TC Tracker

TC Tracker skill. Use when the user asks to track technical changes, create change records, manage TC lifecycles, or hand off work between AI sessions. Covers init/create/update/status/resume/close/export workflows for structured code change documentation.

Track every code change with structured JSON records, an enforced state machine, and a session handoff format that lets a new AI session resume work cleanly…
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#engineering#claude skill
Claude Skills

TDD Guide

Test-driven development skill for writing unit tests, generating test fixtures and mocks, analyzing coverage gaps, and guiding red-green-refactor workflows across Jest, Pytest, JUnit, Vitest, and Mocha.

Test-driven development skill for generating tests, analyzing coverage, and guiding red-green-refactor workflows across Jest, Pytest, JUnit, and Vitest. ---
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#engineering#claude skill
Claude Skills

Tech Debt Tracker

Scan codebases for technical debt, score severity, track trends, and generate prioritized remediation plans. Use when users mention tech debt, code quality, refactoring priority, debt scoring, cleanup sprints, or code health assessment.

Tier: POWERFUL 🔥 Category: Engineering Process Automation Expertise: Code Quality, Technical Debt Management, Software Engineering Tech debt is one of the…
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#engineering#claude skill
Claude Skills

Technology Stack Evaluator

Technology stack evaluation and comparison with TCO analysis, security assessment, and ecosystem health scoring. Use when comparing frameworks, evaluating technology stacks, calculating total cost of ownership, assessing migration paths, or analyzing ecosystem viability.

Evaluate and compare technologies, frameworks, and cloud providers with data-driven analysis and actionable recommendations.
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#engineering#claude skill
Claude Skills

Terraform Patterns

Terraform infrastructure-as-code agent skill and plugin for the agent Code, Codex, Gemini CLI, Cursor, OpenClaw. Covers module design patterns, state management strategies, provider configuration, security hardening, policy-as-code with Sentinel/OPA, and CI/CD plan/apply workflows.

Predictable infrastructure. Secure state. Modules that compose. No drift. Opinionated Terraform workflow that turns sprawling HCL into well-structured,…
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#engineering#claude skill
Claude Skills

Test Audit

Finds low-value or duplicate tests and the test-only code they keep alive, reports evidence, and applies deletions only in user-approved batches. Use when the test suite is slow or bloated, or when asked to "audit tests", "find useless tests" or "prune the test suite".

Find existing tests that cost more than they protect, prove it with evidence, and retire them only in approved batches. Optimize for confidence, not…
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#engineering#claude skill
Claude Skills

Test-Driven Development

Test-Driven Development (TDD) skill. Use when implementing any feature or bugfix, before writing implementation code

Write the test first. Watch it fail. Write minimal code to pass. Core principle: If you didn't watch the test fail, you don't know if it tests the right…
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#engineering#claude skill
Claude Skills

Test, Fix and Verify Bugs

Fix browser/API/CLI/job/worker/webhook bugs. Commit verified fixes atomically. Use when asked to "qa", "QA", "test this site", "find bugs", "test and fix", or "fix what's broken". Proactively suggest when the user says a feature is ready for testing or asks "does this work?". Three tiers: Quick…

Fix browser/API/CLI/job/worker/webhook bugs. Commit verified fixes atomically. Three tiers: Quick (critical/high only), Standard (+ medium), Exhaustive (+…
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#engineering#claude skill
Claude Skills

Text to Excalidraw Diagram

Turn an English description (or mermaid source) into a diagram triplet: the source, an editable .excalidraw file you can open on excalidraw.com, and rendered SVG + PNG. The SVG/PNG use clean mermaid style; the .excalidraw carries the hand-drawn aesthetic.

Every run emits a triplet, never a dead pixel dump: Artifact What it's for ------ <slug.mmd the mermaid source — the LLM-friendly interchange format…
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#documentation#claude skill
Claude Skills

Threat Detection

Threat Detection skill. Use when hunting for threats in an environment, analyzing IOCs, or detecting behavioral anomalies in telemetry. Covers hypothesis-driven threat hunting, IOC sweep generation, z-score anomaly detection, and MITRE ATT&CK-mapped signal prioritization.

Threat detection skill for proactive discovery of attacker activity through hypothesis-driven hunting, IOC analysis, and behavioral anomaly detection. This…
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#engineering#claude skill
Claude Skills

Threat Modelling and Security Router

Senior Security Engineer — Threat Modeling + Security Router skill. Use when the user asks for STRIDE threat modeling, DREAD risk scoring, data-flow-diagram threat analysis, or a quick secret scan — or when a security request needs routing to the right specialist skill (pen-testing, incident response, cloud posture, red team, AI security, threat hunting, secure…

This skill does exactly one job itself — STRIDE/DREAD threat modeling (plus a quick secret scan) — and routes every other security request to the specialist…
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#engineering#claude skill
Claude Skills

UI Design System

UI design system toolkit for Senior UI Designer including design token generation, component documentation, responsive design calculations, and developer handoff tools.

Generate design tokens, create color palettes, calculate typography scales, build component systems, and prepare developer handoff documentation. ---
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#product#claude skill
Claude Skills

Universal Scraping Architect

Use for web scraping, crawling, document extraction, API parsing, or building validation-heavy data pipelines using Firecrawl or local Python scripts. Use when the user asks for universal scraping architect help.

Design complete, robust data-extraction pipelines with intelligent routing, validation, and token-budget tracking — not brittle one-off scripts. Dependency…
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#engineering#claude skill
Claude Skills

Using Agent Skills

Using Superpowers skill. Use when starting any conversation - establishes how to find and use skills, requiring skill invocation before ANY response including clarifying questions

<SUBAGENT-STOP If you were dispatched as a subagent to execute a specific task, ignore this skill. </SUBAGENT-STOP <EXTREMELY-IMPORTANT If you think there…
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#engineering#claude skill
Claude Skills

Using Git Worktrees

Using Git Worktrees skill. Use when starting feature work that needs isolation from current workspace or before executing implementation plans - ensures an isolated workspace exists via native tools or git worktree fallback

Ensure work happens in an isolated workspace. Prefer your platform's native worktree tools. Fall back to manual git worktrees only when no native tool is…
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#engineering#claude skill
Claude Skills

UX Researcher & Designer

UX research and design toolkit for Senior UX Designer/Researcher including data-driven persona generation, journey mapping, usability testing frameworks, and research synthesis.

Generate user personas from research data, create journey maps, plan usability tests, and synthesize research findings into actionable design…
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#product#claude skill
Claude Skills

Vendor Performance Management

Vendor Management — Operational Third-Party Performance skill. Use when reviewing, scoring, or auditing third-party SaaS / vendor relationships — running a vendor scorecard with industry tuning, tracking SLA compliance with credit-claim flags, classifying third-party risk across 4 risk vectors, preparing a tier-1 vendor review, or auditing the SaaS portfolio.

You are a BizOps / IT / Vendor Management Office (VMO) operator. Your job is ongoing vendor performance review, not initial selection or contract drafting.…
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#business#claude skill
Claude Skills

Verification Before Completion

Verification Before Completion skill. Use when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidence before assertions always

Core principle: Evidence before claims, always. Violating the letter of this rule is violating the spirit of this rule. If you haven't run the verification…
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#engineering#claude skill
Claude Skills

Video Content Strategist

Video Content Strategist skill. Use when planning video content strategy, writing video scripts, optimizing YouTube channels, building short-form video pipelines (Reels, TikTok, Shorts), or repurposing long-form content into video.

You are an expert video content…
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#marketing#claude skill
Claude Skills

Visual Design Exploration

Design shotgun: generate multiple AI design variants, open a comparison board, collect structured feedback, and iterate. Standalone design exploration you can run anytime.

You are a design brainstorming partner. Generate multiple AI design variants, open them side-by-side in the user's browser, and iterate until they approve a…
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#design#claude skill
Claude Skills

VP Engineering Plan Review

/cs:vpe-review — VPE Forcing Questions skill. /cs:vpe-review <plan> — Throughput-first VP of Engineering interrogation of any plan that touches delivery, eng hiring, team structure, or production discipline. Use when cycle time balloons, DORA metrics slide, or before committing to an eng hiring wave or a reorg.

Command: /cs:vpe-review <plan The throughput-first VPE pressure-tests any plan touching eng operations. Six questions before any delivery commitment, eng…
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#leadership#claude skill
Claude Skills

VP of Engineering Advisor

VP of Engineering advisory for startups: delivery throughput (DORA 4 metrics + bottleneck identification), engineering hiring funnel (sourcing → screen → onsite → offer conversion + time-to-fill + pipeline gap), engineering team structure (squad/tribe/chapter design + tech-lead manager-trigger…

Strategic engineering operations leadership for startup VPEs and founders without one. Four decisions, no generic engineering survey: 1. Are we delivering…
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#leadership#claude skill
Claude Skills

Web Performance Benchmark

Web performance regression detection. Establishes baselines for page load times, Core Web Vitals, and resource sizes.

You are a Performance Engineer who has optimized apps serving millions of requests. You know that performance doesn't degrade in one big regression — it…
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#engineering#claude skill
Samuel

Samuel

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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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