fixaiprompt
For Developers · Free · No signup

AI prompts for developers that ship.

A curated library of prompts for the coding work you actually do — debugging cryptic stack traces, getting a real code review, optimizing SQL queries, explaining legacy code, generating API docs, and pressure-testing your system design. Works with ChatGPT, Claude, Cursor, and Copilot. Free, no signup.
Open the prompt fixerAll 58 templates

Common developers prompting problems — solved

Each row maps a real pain to the exact template that fixes it.

Pain
ChatGPT 'fixes' your bug by rewriting half the function and introducing 2 new bugs.
Solution
Force a root-cause analysis first, then a minimal fix. The Debug My Code template does exactly this.
Debug My Code
Pain
Asked for a code review, got 30 lines of 'consider adding comments' generic feedback.
Solution
Pin a specific reviewer persona + demand evidence per critique. Skip the platitudes.
Refactor Legacy Code
Pain
Cryptic stack trace, model invents a fix that doesn't address the actual cause.
Solution
Make the model translate trace → root cause → 2 lines to check, before suggesting fixes.
Explain This Stack Trace
Pain
Generated SQL is 'correct' but does a sequential scan over your 100M-row table.
Solution
Demand the optimizer pass — index suggestions, complexity change, and CREATE INDEX statements.
SQL Query Optimizer
Pain
API docs look generated — no edge cases, no error responses, no runnable curl.
Solution
Mandate sections: method/path, what it does, request, response, edge cases, runnable curl, assumptions to verify.
API Documentation Generator
Pain
Building an agent and it loops on the same tool call without progress.
Solution
ReAct skeleton with explicit Thought/Action/Observation markers + 10-step cap + CONFIRM before irreversible actions.
ReAct Agent Skeleton

Top prompt templates for developers

Each template has interactive fill-in fields. Copy the result into ChatGPT, Claude, Gemini, or Grok.

Debug My Code

Get a root-cause analysis, not just a patch.

Open template

Refactor Legacy Code

Improve readability without secretly changing behavior.

Open template

Regex Generator

Get a regex with explanation, edge cases, and a test plan.

Open template

Explain This Stack Trace

Decode a stack trace into the actual bug, in plain English.

Open template

SQL Query Optimizer

Make a slow query fast — with the reasoning shown.

Open template

API Documentation Generator

Turn raw code into clean, copy-paste-ready API docs.

Open template
ReAct

ReAct Agent Skeleton

Thought → Action → Observation loop. The standard pattern for tool-using agents.

Open template
System Prompt Design

System Prompt Designer

Design a production-grade system prompt with role, rules, refusals, and meta-instructions.

Open template
First Principles

First-Principles Decomposer

Break the problem down to atomic facts. Rebuild from atoms. Catch the assumption everyone missed.

Open template

FAQ for software engineers and developers

›Which AI is best for coding — ChatGPT, Claude, or Copilot?

For pure code review and refactoring, Claude Sonnet 3.5 produces the most readable suggestions. For inline completion while writing, Cursor + Claude or GitHub Copilot beats chat. For agentic / multi-step tool use, Claude's tool use is the most reliable. Our templates work on all three.

›Are these prompts free?

Yes. Every tool on FixAIPrompt is free, browser-only, and works without an API key or signup.

›Do these prompts work with Cursor?

Yes — most coding templates work directly. The Cursor target in our Prompt Fixer optimizes prompts for the file-scoped, codebase-aware context Cursor provides.

›How do I share a filled template with my team?

Each template page has a "Copy share link" button that encodes your filled fields into the URL. Teammates who open the link see the prompt pre-filled and can fork it.

›What about prompts for system design interviews?

The First-Principles Decomposer, Tree-of-Thoughts, and System Prompt Designer templates all help with system design problems. The Decision Maker template is good for the trade-off discussion.

›Can I use these prompts in CI / production?

Yes. The npx fixaiprompt CLI (see /tools) lets you pipe text through the linter and auto-fixer from scripts. JSON output supported.

›Where can I find related developer tools?

Check out UnblockDevs (https://unblockdevs.com) — a free toolkit for everyday developer pain: JSON ↔ Excel conversion, JSON error explainer, log parsers, and more. Same client-side, no-upload philosophy as FixAIPrompt.