Claude Sonnet 5 Prompt Generator

Use low reasoning effort. Summarise the key argument in this paragraph in one sentence and identify any logical gaps: [Paste your paragraph]

Use medium reasoning effort. Review this function for bugs, edge cases, and performance issues. Return: (1) a bullet list of all problems found, (2) corrected code, (3) one-line explanation of each fix. ``` [Paste your code here] ```

Use high reasoning effort. I am attaching three research papers on [topic]. Synthesise them into a structured report: 1. CONSENSUS — what all three papers agree on 2. CONTRADICTIONS — where they disagree, and why the disagreement exists 3. GAPS — what none of the papers address 4. TAKEAWAY — one-paragraph practical conclusion for a non-specialist audience [Paste paper text or excerpts]

Use extended thinking (xhigh reasoning effort). Solve this step by step, showing every deduction: Five competitors sit in a row. Each has a different nationality, drink, sport, pet, and car brand. Use these clues to determine who owns the fish: [Paste your logic puzzle clues here] Show each deduction and elimination explicitly before stating the answer.

Build a complete, production-ready implementation of the following feature: Feature: [describe your feature] Stack: [your tech stack, e.g. Next.js 15 + TypeScript + PostgreSQL + Prisma] Deliver: 1. Database schema changes (if any) with migration SQL 2. API route(s) with input validation and error handling 3. React component with loading, error, and empty states 4. Unit test stubs for each new function 5. A brief comment in the code explaining any non-obvious decisions Follow the existing patterns in the codebase: [describe your patterns or paste a sample file]

Plan and execute the following multi-step task. At each step, tell me what you are doing, what information you need, and what decision you are making before proceeding: Task: [describe your goal, e.g. 'Analyse our Q2 sales data, identify the top 3 underperforming product lines, and draft a concise brief for the product team with specific action recommendations.'] Available context: - [Paste your data, documents, or context] After completing all steps, write a final one-paragraph summary of what you found and what I should do next.

Rewrite the following paragraph three times, each with a different goal: 1. VERSION A — tighter and clearer: cut every word that doesn't earn its place. Target 30% shorter. 2. VERSION B — more persuasive: restructure to lead with the strongest claim and end with a call to action. 3. VERSION C — more authoritative: raise the register, remove hedging language, and add one concrete data point placeholder where appropriate. For each version, add one sentence explaining the key change you made. Original paragraph: [Paste your paragraph]

Write complete API documentation for the following endpoint in OpenAPI 3.1 YAML format, then also write a human-readable markdown reference section. Endpoint details: - Method: [GET/POST/etc] - Path: [/your/endpoint] - Auth: [bearer token / API key / none] - Request body: [describe fields] - Success response: [describe fields] - Known error codes: [list them] The documentation should be clear enough for a developer who has never used this API before to make a successful request on the first try.

Help me make the following decision using a structured decision framework: Decision: [describe your decision, e.g. 'Should we build this feature in-house or buy a third-party tool?'] Context: - Constraints: [time, budget, team size, etc.] - Stakeholders: [who is affected] - Options under consideration: [list them] Deliver: 1. A weighted decision matrix with the 5 most important criteria 2. Your recommendation with a clear rationale 3. The strongest argument AGAINST your recommendation (steelman the losing option) 4. What new information would change your recommendation

Rewrite this email to be professional but warm — direct without being cold, confident without being arrogant. Keep the core message identical. Do not add filler phrases like 'I hope this email finds you well.' Flag any sentence that could be misread as passive-aggressive and suggest an alternative. [Paste your email draft]

Analyse this SQL query for performance issues and rewrite it to be faster. Explain each optimisation. Database: [PostgreSQL / MySQL / SQLite / other] Table sizes: [approximate row counts, e.g. 'orders: 12M rows, users: 800K rows'] Current query: ```sql [Paste your query] ``` Provide: 1. The rewritten query 2. Bullet list of every change made and why it helps 3. Which indexes to add (if any) with the exact CREATE INDEX statement

Audit my website's content strategy based on the following information and give me a prioritised action plan. Site overview: [describe your site, audience, and goal] Top 5 pages by traffic: [list them with approximate monthly visits] Top 5 keywords ranking on page 1: [list them] Top 5 keywords ranking on page 2-3: [list them — these are your quick-win opportunities] Content published last 90 days: [list titles] Deliver: 1. A diagnosis: what is the content strategy currently optimised for? 2. The 3 biggest gaps between what you publish and what your audience searches for 3. A prioritised content calendar for the next 8 weeks (specific titles, not categories) 4. The one page I should update immediately and why

Write a production-quality system prompt for a Claude Sonnet 5 deployment with the following requirements: Use case: [describe the bot, e.g. 'customer support agent for a B2B SaaS tool'] Tone: [formal / casual / technical / empathetic] Out-of-scope handling: [what should it refuse or redirect?] Knowledge boundaries: [what does it know and not know?] Output format rules: [how should it structure responses?] The system prompt must: - Clearly define persona and role in the first 3 sentences - Include explicit fallback instructions when the model doesn't know the answer - Add a 'reasoning effort' instruction appropriate to the task complexity - Be under 800 tokens Also write 3 test prompts I can use to verify the system prompt is working correctly.

Write a competitive landscape brief for the following market: Our product: [one sentence description] Our target customer: [describe] Competitors to analyse: [list 4-6 companies] For each competitor provide: - Their primary value proposition (one sentence) - Estimated customer profile (who buys it) - One thing they do better than us - One thing we do better than them - Their apparent pricing model End with: the white space in this market — what positioning is genuinely unclaimed that we could own?

Generate a complete test suite for the following function using [Jest / Vitest / pytest / your framework]. Cover: happy path, edge cases, invalid inputs, boundary conditions, and any async behaviour. Function: ``` [Paste your function here] ``` For each test: - Name it descriptively (what scenario + what result) - Use the AAA pattern (Arrange / Act / Assert) - Add a one-line comment explaining why this case matters

Write a 1,500-word article on the following topic for [your publication / audience]: Topic: [your topic] Primary keyword (must appear in H1, intro, and at least twice in body): [keyword] Audience: [describe who will read this and their expertise level] Tone: [conversational / authoritative / technical / beginner-friendly] Structure: - H1 that includes the primary keyword - 120-word intro that names the reader's problem and promises a specific takeaway - 4–5 H2 sections - A concrete example in every section (not hypothetical) - A 100-word conclusion with a single clear action step Do not use filler phrases, generic advice, or conclusions that just restate the intro.

I have the following dataset. Analyse it and explain what it means in plain language — no jargon, no assuming statistical knowledge. Data: [paste your CSV, table, or key numbers] Answer these questions: 1. What is the single most important trend in this data? 2. What is the most surprising or counterintuitive finding? 3. What is the data NOT telling me that I might wrongly assume it does? 4. What one additional data point would change the interpretation most? 5. Summarise the whole thing in two sentences for someone who will not read the full analysis.

Use extended thinking to diagnose this bug. Walk through every possible cause systematically before settling on the most likely one. Error message: ``` [Paste error] ``` Relevant code: ``` [Paste code] ``` What I have already tried: [list attempts] Environment: [OS, runtime version, relevant packages and versions] Deliver: 1. Your hypothesis ranking (most → least likely cause, with reasoning) 2. The fix for the most likely cause with the specific line changes 3. The debugging steps I should take if the most likely fix doesn't work 4. How to prevent this class of bug in future

I have an interview for [job title] at [company type, e.g. 'Series B startup' or 'Fortune 500']. My background: [2-3 sentence summary of your experience] The role focuses on: [describe the key responsibilities] Generate: 1. The 8 most likely interview questions for this specific role 2. A strong answer framework for each (not a full script — the key points I should hit) 3. The 3 questions I should ask the interviewer to show genuine interest and strategic thinking 4. The one weakness I should avoid mentioning given this specific role and company type

Write a complete Product Requirements Document for the following feature: Feature name: [name] Problem it solves: [one sentence] Target user: [describe] Success metric: [how will we know it worked?] The PRD must include: 1. PROBLEM STATEMENT — 2 paragraphs: the current pain and why it matters now 2. PROPOSED SOLUTION — what we are building (not how) 3. USER STORIES — 5 stories in 'As a [user], I want [goal], so that [reason]' format 4. ACCEPTANCE CRITERIA — bullet list of testable conditions for each user story 5. OUT OF SCOPE — 3 things we are explicitly NOT building in v1 6. OPEN QUESTIONS — 3 decisions that are not yet made and who owns each 7. TIMELINE — rough phases (discovery / build / launch) with no dates, just sequence