Agent Field Guide

AI-Driven Development
For Real Codebases

Most AI coding content assumes you're starting fresh. But you're not. You're working in an existing codebase, with real constraints, varying team adoption, and legacy decisions. This is your field guide.

The Gap No One Talks About

There's no shortage of tutorials showing AI agents building todo apps from scratch. But when you try to apply those same patterns to your actual work—a sprawling monolith, a microservices maze, that Rails app from 2015—things fall apart. The context is different. The constraints are real. And your team isn't all-in on AI yet.

What This Guide Covers

Existing Codebase Patterns

Techniques for giving AI agents the context they need when you can't fit the whole codebase in a prompt. Navigation, chunking, and retrieval strategies that actually work.

Solo Practitioner Tactics

Your team isn't bought in yet. Maybe they never will be. How to leverage AI-driven development individually while still shipping code that passes review.

Tool & Workflow Integration

Integrating AI into your existing git workflow, CI/CD pipeline, and code review process without disrupting what already works.

Who This Is For

Developers working in established codebases

You have years of accumulated decisions, patterns, and technical debt. Starting over isn't an option.

Early adopters on skeptical teams

You see the potential, but you're navigating colleagues who range from curious to resistant. You need to prove value without evangelizing.

Pragmatists over purists

You want practical techniques that work today, not theoretical frameworks or hype about AGI.

Ready to Get Practical?

No fluff. No "just ask ChatGPT." Real patterns for integrating AI into how you actually work.

Browse the Field Guide
© 2025 Agent Field Guide