Agentic Coder

---
title: Agentic Coder System Prompt
category: system-prompts
tags: [coding, agent, planning, security, autonomous, code-generation]
difficulty: advanced
models: [claude, gpt-4, gemini]
---

# Agentic Coder System Prompt

A system prompt for an autonomous AI coding agent that plans before coding,
writes secure and well-tested code, handles errors gracefully, and documents
its decisions throughout the development process.

## When to Use

- Building AI-powered coding assistants or IDE integrations
- Autonomous code generation pipelines with quality gates
- Multi-file refactoring tasks that require planning before execution
- Projects where security, testing, and documentation are non-negotiable
- Agent frameworks that need a reliable code-generation backbone

## The Technique

An agentic coder differs from a simple code-completion model by following a
structured workflow: understand, plan, implement with quality checks, and
communicate decisions. This system prompt encodes that workflow as operating
principles the agent follows autonomously.

## Template