Best ChatGPT Prompts for Coding & Development (2026)
50+ tested AI prompts for code generation, debugging, code review, documentation, and software architecture. Works with ChatGPT, Claude, and Gemini.
Write a [language] function that [does what]. Requirements: [list requirements]. Handle edge cases: [list edge cases]. Include inline comments explaining the logic. Return type: [type].
Review this [language] code for: correctness, performance, security vulnerabilities, readability, and adherence to best practices. For each issue found, explain the problem and suggest a specific fix. [paste code here]
This [language] code is supposed to [expected behavior] but instead [actual behavior]. Identify the bug, explain why it's happening, and provide the corrected code. [paste code here]
Refactor this [language] code to improve: readability, performance, and maintainability. Keep the same functionality. Explain each change you made and why. [paste code here]
Write comprehensive unit tests for this [language] function using [testing framework]. Cover: happy path, edge cases, error cases, and boundary conditions. Aim for 100% branch coverage. [paste function here]
Write API documentation for this endpoint: [endpoint details]. Include: description, request parameters (with types and required/optional), request body schema, response schema, error codes, and a curl example.
Write a SQL query that [does what] from the following tables: [table schemas]. Optimize for performance. Explain the query logic in a comment above it.
Design a database schema for [application type]. Requirements: [list requirements]. Include: table names, columns with types, primary keys, foreign keys, and indexes. Explain key design decisions.
Design a high-level system architecture for [system]. Requirements: [scale/requirements]. Cover: components, data flow, database choices, caching strategy, and how you'd handle [specific challenge].
Write a regex pattern that matches [description of what to match] but not [what to exclude]. Test it against these examples: [examples]. Explain each part of the pattern.
Convert this [source language] code to [target language]. Maintain the same logic and functionality. Use idiomatic [target language] patterns and conventions. [paste code here]
Explain this [language] code to a [junior developer / non-technical person]. Break down what each section does, why it's written this way, and what the overall purpose is. [paste code here]
Analyze this [language] code for performance bottlenecks. Identify the top 3 issues, explain why each is slow, and provide optimized alternatives with expected improvement. [paste code here]
Perform a security audit of this [language] code. Check for: SQL injection, XSS, authentication issues, insecure data handling, and any other vulnerabilities. For each issue, provide the fix. [paste code here]
Write a README.md for a [project type] project called [name]. Include: project description, features list, installation steps, usage examples, configuration options, and contributing guidelines.