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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

416 prompts in Claude Skills

Claude Skills

Signup Flow CRO

Signup Flow CRO skill. When the user wants to optimize signup, registration, account creation, or trial activation flows.

You are an expert in optimizing signup and registration flows. Your goal is to reduce friction, increase completion rates, and set users up for successful…
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#marketing#claude skill
Claude Skills

Single Experiment Iteration

Run a single experiment iteration. Edit the target file, evaluate, keep or discard.

Run exactly ONE experiment iteration: review history, decide a change, edit, commit, evaluate.
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#engineering#claude skill
Claude Skills

Site Architecture & Internal Linking

Site Architecture & Internal Linking skill. When the user wants to audit, redesign, or plan their website's structure, URL hierarchy, navigation design, or internal linking strategy.

You are an expert in website information architecture and technical SEO structure. Your goal is to design website architecture that makes it easy for users…
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#marketing#claude skill
Claude Skills

Skill Security Auditor

Security audit and vulnerability scanner for AI agent skills before installation.

Scan and audit AI agent skills for security risks before installation. Produces a clear PASS / WARN / FAIL verdict with findings and remediation guidance.
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#engineering#claude skill
Claude Skills

Skill Tester

Validate, test, and score the quality of skills within the claude-skills ecosystem.

Tier: POWERFUL · Category: Engineering Quality Assurance · Dependencies: None (Python stdlib only) Meta-skill that validates, tests, and scores skills in…
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#engineering#claude skill
Claude Skills

Skill Writing and Testing

Writing Skills skill. Use when creating new skills, editing existing skills, or verifying skills work before deployment

Writing skills IS Test-Driven Development applied to process documentation. Personal skills live in your runtime's skills directory (~/.claude/skills/ on…
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#engineering#claude skill
Claude Skills

SLO Architect

SLO Architect skill. Use when defining, reviewing, or operating SLOs/SLIs/error budgets. Triggers on "define an SLO", "what should our SLO be", "error budget", "burn rate", "SLI", "service level objective", "Google SRE workbook", "multi-window burn-rate alert", or any reliability-target question.

Define SLOs that mean something. Most "SLOs" in the wild are arbitrary numbers no one believes — 99.9% on every endpoint, no SLI definition, no error…
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#engineering#claude skill
Claude Skills

Smart Test Reporting

Smart Test Reporting skill. - Generate test report. Use when user says "test report", "results summary", "test status", "show results", "test dashboard", or "how did tests go".

Generate test reports that plug into the user's existing workflow. Zero new tools.
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#engineering#claude skill
Claude Skills

SMS Marketing

SMS Marketing skill — when the user wants to plan, build, or optimize SMS, MMS, or WhatsApp marketing — including welcome flows, abandoned cart texts, post-purchase, win-back, promotional sends, or transactional/auth SMS.

You are an expert in SMS and MMS marketing for direct-to-consumer brands, mobile apps, and SaaS products with high-engagement use cases. Your goal is to…
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#marketing#claude skill
Claude Skills

SOC 2 Compliance

SOC 2 Compliance skill. Use when the user asks to prepare for SOC 2 audits, map Trust Service Criteria, build control matrices, collect audit evidence, perform gap analysis, or assess SOC 2 Type I vs Type II readiness.

SOC 2 Type I and Type II compliance preparation for SaaS companies. Covers Trust Service Criteria mapping, control matrix generation, evidence collection,…
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#compliance#claude skill
Claude Skills

SOC 2 Type II Audit Prep

/cs:soc2-audit-prep — SOC 2 Type II Forcing Questions skill. /cs:soc2-audit-prep <scope> — SOC 2 Type II readiness 6-question forcing interrogation. Observation-period focused.

Command: /cs:soc2-audit-prep <scope The SOC 2 Type II auditor pressure-tests any SOC 2 work. Six observation-period-disciplined questions before any Type II…
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#compliance#claude skill
Claude Skills

Social Content

Social Content skill. When the user wants help creating, scheduling, or optimizing social media content for LinkedIn, Twitter/X, Instagram, TikTok, Facebook, or other platforms.

You are an expert social media strategist. Your goal is to help create engaging content that builds audience, drives engagement, and supports business goals.
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#marketing#claude skill
Claude Skills

Social Media Analyzer

Social media campaign analysis and performance tracking. Calculates engagement rates, ROI, and benchmarks across platforms.

Campaign performance analysis with engagement metrics, ROI calculations, and platform benchmarks. ---
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#marketing#claude skill
Claude Skills

Social Media Strategy

Social Media Manager skill. When the user wants to develop social media strategy, plan content calendars, manage community engagement, or grow their social presence across platforms.

You are a senior social media strategist who has grown accounts from zero to six figures across every major platform. Your goal is to help build a…
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#marketing#claude skill
Claude Skills

Spec to Repo

Spec to Repo skill. Use when the user says 'build me an app', 'create a project from this spec', 'scaffold a new repo', 'generate a starter', 'turn this idea into code', 'bootstrap a project', 'I have requirements and need a codebase', or provides a natural-language project specification and expects a complete,…

Turn a natural-language project specification into a complete, runnable starter repository. Not a template filler — a spec interpreter that generates real,…
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#product#claude skill
Claude Skills

Spec-Driven Development

Spec-Driven Workflow — POWERFUL skill. Use when the user asks to write specs before code, define acceptance criteria, plan features before implementation, generate tests from specifications, or follow spec-first development practices.

Spec-driven workflow enforces a single, non-negotiable rule: write the specification BEFORE you write any code. Not alongside. Not after. Before. This is…
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#engineering#claude skill
Claude Skills

Spinning Up in Deep RL

Knowledge base from \"Spinning Up in Deep RL\".

Chapters: 20 Generated: 2026-08-25
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#engineering#claude skill
Claude Skills

SQL Database Assistant

SQL Database Assistant - POWERFUL Tier Skill skill. Use when the user asks to write SQL queries, optimize database performance, generate migrations, explore database schemas, or work with ORMs like Prisma, Drizzle, TypeORM, or SQLAlchemy.

The operational companion to database design. While database-designer focuses on schema architecture and database-schema-designer handles ERD modeling, this…
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#engineering#claude skill
Claude Skills

Statistical Analyst

Run hypothesis tests, analyze A/B experiment results, calculate sample sizes, and interpret statistical significance with effect sizes. Use when you need to validate whether observed differences are real, size an experiment correctly before launch, or interpret test results with confidence.

You are an expert statistician and data scientist. Your goal is to help teams make decisions grounded in statistical evidence — not gut feel. You…
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#engineering#claude skill
Claude Skills

Stock Analysis

Produce a rigorous, sector-relative, multi-factor fundamental analysis of a publicly listed company — Indian (NSE/BSE) or US/global.

Produce an evidence-backed fundamental analysis of one company, benchmarked against the right peers, and delivered as a written report plus a…
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#finance#claude skill
Claude Skills

Strategic Alignment Engine

Cascades strategy from boardroom to individual contributor. Detects and fixes misalignment between company goals and team execution.

Strategy fails at the cascade, not the boardroom. This skill detects misalignment before it becomes dysfunction and builds systems that keep strategy…
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#leadership#claude skill
Claude Skills

Strict API Verification

Strict API Verification skill. Use when the user says 'no hallucinations', 'verify APIs', 'reality check', or 'don't invent functions'. Prevents the agent from calling methods, imports, or variables that do not provably exist in the user's installed version.

Inventing a function that doesn't exist is the opposite of efficiency. You wrote a line that looks minimal. You shipped a bug that takes an hour to debug.…
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#engineering#claude skill
Claude Skills

Subagent-Driven Development

Subagent-Driven Development skill. Use when executing implementation plans with independent tasks in the current session

Execute plan by dispatching a fresh implementer subagent per task, a task review (spec compliance + code quality) after each, and a broad whole-branch…
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#engineering#claude skill
Claude Skills

Support Capacity Planner

capacity-planner skill. Use when an ops leader (Director of CX, Head of Support, VP Ops, Head of BizOps, Head of IT ops, Head of Finance ops) is sizing ops capacity, building a headcount plan, modeling utilization risk, planning Q3 capacity or annual support capacity, or designing CS coverage — and needs Erlang-C…

Sizing tool for ops teams that handle queued work — Support, CX, Customer Success, BizOps, IT ops, Finance ops. Built on Erlang-C queueing theory, Little's…
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#business#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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