336 prompts
You are a staff engineer experienced with legacy systems. System: [description, age, language] Pain points: [bugs, slow changes, outdated libraries] Constraints: [can't stop shipping features, limited tests] Create a plan: characterisation tests first, the strangler-fig approach, which areas to modernise first (by ris…
Plan an incremental modernisation of old code without a risky big-bang rewrite.
You are a Kubernetes engineer. App: [container image, port, env vars (names), resources] Requirements: [replicas, health checks, scaling, ingress, persistent storage] Write Deployment, Service, Ingress, ConfigMap/Secret references and HorizontalPodAutoscaler manifests, with comments explaining every field. Add kubectl…
Write and understand Kubernetes manifests for deploying a containerised app.
You are a tech lead planning an upgrade. Current and target versions: [e.g. React 17 → 19, Python 3.8 → 3.12, Laravel 9 → 11] Codebase size and test coverage: [details] Key dependencies: [list] Create: breaking changes to check (verify against official upgrade guides), dependency compatibility plan, step-by-step upgra…
Plan a safe upgrade between major versions of a framework or language.
You are a Vue 3 developer. Component: [purpose] Props and events: [list] State and behaviour: [details] Styling: [Tailwind / scoped CSS] Write a single-file component using <script setup> and TypeScript, with accessible markup, loading/empty states, emitted events, and a usage example plus a Vitest test.
Create a reusable Vue 3 component with the Composition API, props, events and accessibility.
You are a front-end developer who cares about motion design. Elements to animate: [buttons, cards, modal, loader, list items] Style: [subtle, playful, premium] Write CSS (and minimal JS if needed) for each animation using transforms and opacity for performance, sensible durations and easing, and a prefers-reduced-moti…
Add smooth, accessible animations to buttons, cards, loaders and page elements.
You are a performance engineer. Platform: [browser app, Node.js, Python, mobile] Symptoms: [memory grows over time, crashes after X hours] Suspicious code: ``` [paste] ``` Explain common leak causes for this platform, how to profile and capture heap snapshots step by step, what to look for, likely culprits in my code,…
Find and fix memory leaks in web apps, Node.js services or mobile apps.
You are a software architect and teacher. Problem I'm facing: [e.g. many if/else branches for payment types, objects hard to test] Code: ``` [paste] ``` Suggest 1–2 design patterns that fit (and one that doesn't, with why), explain them simply, show my code refactored with the pattern, and discuss trade-offs. Avoid ov…
Learn which design pattern fits your problem and see it applied to your code.
You are a Node.js backend engineer focused on security. Requirements: [user fields, roles, routes] Database: [details] Write an Express app with: password hashing (bcrypt/argon2), login returning a short-lived access token plus refresh token handling, auth middleware, role checks, input validation, rate limiting on lo…
Build a secure Node.js/Express API with sign-up, login, protected routes and token handling.
You are an identity and security engineer. App type: [web, SPA, mobile] Providers: [Google, Microsoft, GitHub] Stack: [details] Explain the right flow (e.g. authorization code with PKCE), step by step, with a sequence diagram in Mermaid, how to handle state and nonce, token storage, account linking, logout, and common…
Plan a 'Sign in with Google/Microsoft/GitHub' flow securely, with the right OAuth/OIDC settings.
You are a database performance expert. Database: [PostgreSQL / MySQL / SQL Server] Query: ```sql [paste] ``` Table sizes and existing indexes: [details] EXPLAIN output (if available): [paste] Explain why it's slow, suggest indexes (with trade-offs), rewrite the query if helpful, and estimate the improvement. Mention h…
Speed up a slow query with index suggestions, rewrites and an explanation of the query plan.
You are a Python developer. Tool purpose: [what it does] Commands/options: [list] Input/output: [files, APIs] Write a CLI using [argparse / Click / Typer] with subcommands, helpful --help text, input validation, clear error messages, exit codes, a config file option, and a README usage section. Include tests for the c…
Build a polished command-line tool with arguments, help text, config and error handling.
You are a test automation engineer. App: [URL/type] Critical user journeys: [e.g. sign up, log in, checkout, create item] Test environment details: [test accounts set up via seed data] Write Playwright tests in [TypeScript/Python] using resilient selectors (roles, labels, test IDs), page objects, test data setup, and…
Write reliable browser tests for your most important user journeys.