The problem
Coding agents are fast, but out of the box they often:
- call functions or library APIs that don't exist,
- rewrite files you didn't ask them to change,
- report that tests or checks passed without running them,
- bury the one real bug under dozens of nitpicks.
A lot of this comes down to the system prompt. These prompts set clear scope, demand evidence, and say what the agent must not claim.
The 10-role pipeline
Planner
Agents start coding before they understand the task, then wander.
Implementer
Agents rewrite files they were not asked to touch, invent APIs, and drift from the plan.
Code Reviewer (free)
Agent reviews are either 40 nitpicks or a vague 'looks good'.
Test Writer (free)
Agent-written tests often assert nothing and pass even when the code is broken.
Debugger (free)
Agents guess at fixes and patch symptoms instead of finding the cause.
Refactorer
'Refactors' that quietly change behavior.
PR Writer
PR descriptions that are empty, or that overstate what was tested.
Repo Explainer
Getting oriented in an unfamiliar codebase takes hours, and agents hallucinate its structure.
Security Auditor
Generic security checklists that flag nothing real or miss the real risk.
Orchestrator
Multi-agent setups with no clear hand-offs between roles.
Start free
Free on GitHub (MIT): code reviewer, debugger, and test writer in Claude Code, Cursor, and AGENTS.md formats, with a one-command installer.
ReefJedi/coding-agent-promptsFree Code Reviewer on Gumroad ($0)Get all 10 roles
The full Coding Agent Prompt Pack v1: all 10 prompts, designed to hand off to each other, plus a README on how to wire them together. One-time $19.
Buy on Gumroad ($19)FAQ
Can I get a refund?
No. All sales are final. Try the free Code Reviewer prompt and the free GitHub repo first to see if the style fits you.
Can I use the prompts commercially?
Yes. You can use the prompts in any personal or commercial project. You may not resell or redistribute the pack itself.
Which tools does it work with?
The prompts are plain-text system prompts, so they work with any coding agent that accepts a system prompt or rules file. The free repo also ships Claude Code subagent, Cursor .mdc, and AGENTS.md versions with an installer.
What is free and what is paid?
Three roles (code reviewer, debugger, test writer) are free and MIT-licensed on GitHub. The full 10-role pack is $19 on Gumroad.
Do I get updates?
Updates to the v1.x pack are delivered through Gumroad to existing buyers.