Free AI Prompt Library - ChatGPT, Claude, Gemini

Claude Prompt for Creating a REST API

Creating a REST API is a fundamental task of modern backend development. Whether you are building a microservice, a SaaS application, or a full platform, a well-structured API is the backbone of your architecture. Claude excels at generating complete REST APIs following best practices: clear project structure, data validation, error handling, authentication, OpenAPI documentation, and tests. Rather than starting from scratch or copying outdated boilerplates, you can precisely describe your business needs to Claude and get a production-ready API in minutes. The major advantage lies in Claude's ability to adapt the code to your framework of choice (Express, FastAPI, NestJS, Django REST, Spring Boot) while applying RESTful conventions: appropriate HTTP verbs, correct status codes, pagination, filtering, and versioning. This guide provides optimized prompts to get the most out of Claude in designing and implementing your REST APIs, from quick prototypes to complete microservice architectures.

Prompt Claude to Define a Positioning

Defining a clear positioning is the cornerstone of any successful marketing strategy. Without a solid positioning, your messages drown in the crowd and your audience doesn't understand why they should choose you over a competitor. Claude excels at this strategic exercise thanks to its ability to simultaneously analyze your market, your distinctive strengths, and your target's expectations. Unlike a classic brainstorming session that can stretch over several days, Claude structures its thinking by cross-referencing proven positioning frameworks — from Al Ries and Jack Trout to April Dunford — to produce actionable positioning in minutes. The AI pushes you to clarify what you really do, for whom, and especially why it's different. The prompt below is designed to extract key information from you and transform it into a comprehensive strategic positioning, including your unique value proposition, brand territory, and key messages. Whether you're launching a new product, repositioning an existing offer, or seeking to differentiate in a saturated market, this prompt guides you step by step toward a memorable and defensible positioning.

Claude Prompt to Create a Media Kit

A professional media kit is an essential tool for any brand, content creator, or business looking to attract partnerships, collaborations, or media coverage. It brings together in one document your key statistics, positioning, achievements, and collaboration offers. However, creating one is often a challenge: what information to include, how to structure it, what tone to adopt? Claude excels at this exercise by combining persuasive writing, logical structuring, and adaptation to your industry. By providing your raw data — audience, metrics, brand values, past collaborations — it generates a complete, coherent media kit ready for layout. Whether you are an influencer, startup, nonprofit, or independent media outlet, Claude adapts the content to your positioning and goals. The AI also helps you identify missing information and craft your value proposition impactfully. The result: a professional document that inspires confidence and facilitates decision-making for your future partners.

Gemini Prompt for Writing Subtitles

Subtitles play a crucial role in structuring written content. Whether it's a blog post, a web page, a report, or a white paper, well-written subtitles guide the reader, improve readability, and enhance SEO. Yet, finding the right phrasing—informative, engaging, and consistent with the text's tone—is often an underestimated exercise. Gemini, Google's artificial intelligence model, excels at contextual understanding and structured text generation. By providing it with a well-constructed prompt, you can obtain impactful subtitles that capture attention, prioritize information, and perfectly adapt to your target audience. Whether you're writing marketing, educational, or journalistic content, Gemini helps you transform a raw outline into a professional title architecture. Discover below an optimized prompt and its variants to get the most out of Gemini for writing your subtitles.

Claude Prompt to Optimize SEO

SEO is an essential lever for any digital strategy, but it requires sharp technical expertise and constant monitoring. Claude, Anthropic's AI, proves to be a powerful ally for optimizing every facet of your SEO: from keyword research to on-page optimization, including semantic structuring of your content. Unlike a time-consuming manual approach, Claude deeply analyzes search intent, identifies gaps in your strategy, and provides actionable recommendations immediately. Whether you manage a blog, e-commerce site, or business website, the prompts presented here will allow you to fully leverage Claude's ability to reason on complex data, cross-reference SEO signals, and produce analysis worthy of a senior consultant. The goal is simple: save you hours of audit and planning while increasing the quality of your optimizations. Discover how to formulate your requests to get concrete and measurable SEO results.

Claude Prompt for Survey Analysis

Surveys are powerful tools for understanding the opinions, behaviors, and expectations of a target audience. But once responses are collected, analysis can quickly become a headache: open-ended data to code, trends to identify, biases to detect, and actionable insights to extract. This is precisely where Claude excels. Thanks to its natural language processing capabilities, Claude can analyze both quantitative and qualitative survey responses, identify patterns invisible to the naked eye, group verbatims by themes, and produce a structured synthesis with concrete recommendations. Whether you have 50 or 5,000 responses, whether your survey covers customer satisfaction, market research, or internal feedback, Claude transforms your raw data into decision-making intelligence. This prompt is designed to provide you with a complete analysis in a single interaction, covering descriptive statistics, thematic analysis of open-ended responses, correlation detection, and strategic recommendations.

Prompt Claude for UI Design Creation

Claude has become an indispensable ally for designers and developers who want to create professional-quality user interfaces. Thanks to its deep understanding of design principles, modern CSS frameworks, and UX best practices, Claude can generate complete mockups in HTML/CSS, propose consistent design systems, and produce production-ready frontend code. Whether you are designing a landing page, a dashboard, or a mobile application, Claude analyzes your functional and aesthetic needs to produce visually polished, accessible, and responsive interfaces. The major advantage lies in its ability to iterate quickly: you describe your vision, Claude generates a first version, then you refine together until the desired result. It masters Tailwind CSS, shadcn/ui, visual hierarchy principles, color theory, and WCAG accessibility standards. Unlike traditional design tools, Claude understands the business context of your project and adapts its proposals accordingly, making it a particularly powerful tool for rapid prototyping and production of final interfaces.

Claude Prompt for Generating Advertising Visuals

Anthropic's Claude revolutionizes the creation of advertising visuals by enabling marketers, designers, and entrepreneurs to generate detailed visual concepts, complete creative briefs, and image descriptions ready for production. Unlike standard image generators, Claude excels at strategic conceptualization: it analyzes your brand, target audience, and business objectives to produce coherent art directions and visual prompts optimized for image generation tools like DALL-E, Midjourney, or Stable Diffusion. Whether you need banners for your Meta Ads campaigns, visuals for Google Display, creatives for your Instagram stories, or stylized product packshots, Claude structures every visual element with remarkable precision: composition, color palette, typography, visual hierarchy, and call to action. Its analytical approach ensures that each advertising visual serves a specific conversion goal while respecting your brand identity codes. Discover how to leverage Claude to transform your advertising creation process and produce high-impact visuals in a fraction of the usual time.

Claude Prompt to Create a Business Plan

Creating a solid business plan is a crucial step for any entrepreneur, but the process can be long and complex. Claude, Anthropic's AI assistant, excels at structuring information and strategic analysis, making it a valuable ally for drafting a professional business plan. Thanks to its ability to synthesize market data, model financial projections, and articulate a clear value proposition, Claude guides you through each section of the document: executive summary, market analysis, business strategy, operational plan, and financial forecasts. Whether you are preparing a document for investors, a bank loan application, or simply an internal roadmap, a well-crafted prompt helps you obtain a structured, coherent business plan tailored to your industry. The prompt engineering approach lets you guide Claude toward a customized result, integrating your specific data and strategic goals to produce a truly actionable document.

Claude Prompt for Creating Mockups

Creating mockups is a crucial step in any design process, whether for a mobile app, website, or software. Claude excels at generating detailed mockups as ready-to-view HTML/CSS code, structured descriptions for design tools, or complete specifications to guide a development team. Thanks to its deep understanding of interface design, UX principles, and modern design systems, Claude can turn a simple idea into a concrete visual prototype in seconds. Whether you're a designer looking to speed up your ideation phase, a product manager wanting to communicate a product vision, or a developer needing to quickly prototype a feature, Claude lets you move from intention to visual without mastering complex design tools. The prompt approach gives you full control over the fidelity level, visual style, and complexity of the generated mockup.

Claude Prompt for Optimizing Ads

Ads are a major investment for any business, and their effectiveness largely depends on the quality of the message, targeting, and creative structure. Claude excels at analyzing and optimizing ad campaigns thanks to its ability to dissect persuasion mechanisms, identify weaknesses in ad copy, and propose testable variations. Whether you work on Google Ads, Meta ads, display banners, or video spots, Claude can analyze your existing creatives, suggest improvements based on proven direct-response copywriting principles, and generate A/B variants to maximize your conversion rates. The AI does not replace your market knowledge, but it significantly accelerates the creative iteration process by allowing you to test more angles, more hooks, and more argumentative structures in a fraction of the usual time. Use these prompts to turn Claude into a true augmented creative director for your ad performance.

Claude Prompt to Create a Marketing Plan

Creating a solid marketing plan is a strategic exercise that requires a global vision of the market, a fine understanding of your target, and the ability to articulate objectives, channels, and budgets coherently. Claude excels at this task thanks to its ability to structure complex information, propose proven frameworks, and adapt its recommendations to the specific context of your business. Whether you are launching a new product, repositioning an existing brand, or planning your annual strategy, Claude can generate a complete marketing plan including market analysis, positioning, marketing mix, action timeline, and measurable KPIs. The major advantage lies in the speed of iteration: you can refine your plan in just a few exchanges, test different budget scenarios, and receive well-argued recommendations for each acquisition channel. Claude leverages best practices in strategic marketing to deliver an actionable document, ready to be presented to your management or to guide your team on a daily basis.