Guide
Best ChatGPT Prompts for Coding
30 free prompts · Updated September 2026
The fastest way to waste time with AI coding help is a vague prompt. The templates below structure what ChatGPT actually needs — language, framework, the failing behavior, the constraint — so the answer compiles instead of gesturing.
The set covers debugging, code review, unit test generation, refactoring, API design, and architecture decisions. Copy a template, paste your code or error into the [variables], and you'll get a response scoped to your actual stack rather than a generic tutorial.
- 01Webhook Retry and Idempotency Design GuideDesign resilient webhook delivery and consumer handling with idempotency keys, retry policies, signature verification, and dead-letter recovery workflows.Works with ChatGPT, Claude, Gemini
- 02Code Review AssistantGet a thorough, senior-level code review with actionable feedback on quality, security, performance, and best practices.Works with ChatGPT, Claude, Gemini
- 03Unit Test GeneratorGenerate comprehensive unit tests with edge cases, mocks, and full coverage for your code.Works with ChatGPT, Claude, Gemini
- 04macOS App Architecture PlannerDesign a clean, production-ready architecture for a native macOS app using SwiftUI, including data flow, persistence, and system integration.Works with ChatGPT, Claude, Gemini
- 05Python FileNotFoundError Debugging PromptDebug Python FileNotFoundError from the exact traceback, resolved path, working directory, filesystem context, deployment environment, and failing operation.Works with ChatGPT, Claude, Gemini
- 06Python ZeroDivisionError Debugging PromptDebug Python ZeroDivisionError from the exact traceback, operand values and types, data path, numeric semantics, runtime context, and failing input.Works with ChatGPT, Claude, Gemini
- 07Python IndentationError Debugging PromptDebug Python IndentationError from the exact parser message, whitespace, block structure, source bytes, formatter settings, and runtime version.Works with ChatGPT, Claude, Gemini
- 08Python SyntaxError: Invalid Syntax Debugging PromptDebug Python SyntaxError invalid syntax from the exact parser location, surrounding tokens, Python version, generated code, execution context, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 09Python AttributeError: Object Has No Attribute Debugging PromptDebug Python AttributeError from the exact traceback, runtime object type, attribute contract, construction path, version, imports, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 10Python UnboundLocalError Debugging PromptDebug Python UnboundLocalError from the exact traceback, binding scope, assignments, branches, closures, imports, runtime path, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 11Python TypeError: Object Is Not Callable Debugging PromptDebug Python's object is not callable TypeError from the exact traceback, runtime value, binding history, call site, imports, control flow, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 12Python NameError: Name Is Not Defined Debugging PromptDebug Python's name is not defined error from the exact traceback, identifier, scope, execution order, imports, branches, runtime, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 13Python ValueError: Invalid Literal for int() Debugging PromptDebug Python's invalid literal for int() error from the exact traceback, failing value, input source, parsing path, base, runtime, and intended data contract.Works with ChatGPT, Claude, Gemini
- 14Python IndexError: List Index Out of Range Debugging PromptDebug Python's list index out of range error from the exact traceback, failing index, sequence state, mutation history, input, runtime, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 15Python KeyError Debugging PromptDebug a Python KeyError from the exact traceback, failing key, mapping state, schema, data flow, runtime, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 16Python 'NoneType' Object Is Not Subscriptable Debugging PromptDebug Python's 'NoneType' object is not subscriptable error from the exact traceback, value flow, contracts, runtime, inputs, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 17JavaScript Maximum Call Stack Size Exceeded Debugging PromptDebug JavaScript's Maximum call stack size exceeded error from the exact stack, call graph, recursive path, runtime, inputs, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 18JavaScript Cannot Read Properties of Undefined Debugging PromptDebug JavaScript's Cannot read properties of undefined error from the exact stack, runtime values, data flow, lifecycle timing, types, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 19React Too Many Re-renders Error Debugging PromptDebug React's Too many re-renders error from the exact component, stack, state updates, event handlers, effects, framework mode, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 20Git Detached HEAD Recovery PromptRecover safely from a Git detached HEAD using repository state, commit reachability, reflog evidence, worktree changes, remotes, and an explicit preservation-first plan.Works with ChatGPT, Claude, Gemini
- 21npm ERESOLVE Error Debugging PromptDebug an npm ERESOLVE dependency-tree error from the exact command, peer-dependency conflict, package metadata, runtime versions, lockfile state, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 22Next.js Hydration Error Debugging PromptDebug a Next.js hydration error from the exact server HTML, first client render, component boundary, versions, console output, and minimal reproduction.Works with ChatGPT, Claude, Gemini
- 23Python ModuleNotFoundError Debugging PromptDebug Python ModuleNotFoundError from the exact traceback, interpreter, environment, import path, project layout, packaging metadata, and launch command.Works with ChatGPT, Claude, Gemini
- 24Segmentation Fault Debugging PromptDebug a segmentation fault from the exact crash signal, source, build flags, backtrace, sanitizer evidence, inputs, and runtime environment.Works with ChatGPT, Claude, Gemini
- 25CORS Error Debugging PromptDebug a CORS error from the exact browser message, origins, preflight exchange, server stack, proxy path, credentials mode, and response headers.Works with ChatGPT, Claude, Gemini
- 26CLAUDE.md Generator PromptGenerate a concise CLAUDE.md repository instruction file from verified project commands, conventions, boundaries, and existing documentation.Works with Claude, ChatGPT, Gemini
- 27GitHub Actions Workflow Generator PromptGenerate a minimal GitHub Actions workflow from verified repository commands, events, runner needs, permissions, secrets, caching, and deployment constraints.Works with ChatGPT, Claude, Gemini
- 28Docker Command Generator PromptGenerate a precise Docker CLI command from your goal, environment, current container state, version, and safety constraints.Works with ChatGPT, Claude, Gemini
- 29Google Sheets Formula Generator PromptGenerate Google Sheets formulas, ARRAYFORMULA expressions, and Apps Script snippets from plain English descriptions.Works with ChatGPT, Claude, Gemini
- 30README Generator PromptGenerate professional GitHub README files with badges, installation steps, API docs, and contribution guides from a project description.Works with ChatGPT, Claude, Gemini
Frequently Asked Questions
How do I get ChatGPT to debug my code properly?
Include the code, the exact error message, what you expected, and what happened instead. The debugging templates here have slots for each, which forces the diagnosis to engage with your actual failure rather than guessing.
Can ChatGPT write production-quality code?
It writes strong first drafts and excellent tests and reviews. Treat output as a capable pair programmer's suggestion: read it, run it, and keep your own judgment in the loop — the review templates help with exactly that.
Which AI is best for coding help?
ChatGPT and Claude are both strong; Claude tends to do especially well on longer codebases and careful refactors. Every template on this list works with either.
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