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From 2,300 Lines to 50: Rebuilding AI Agent Architecture
How I rebuilt a monolithic AI agent system into a clean, composable multi-agent architecture.
The Problem
A single 2,300-line orchestrator file that was impossible to maintain, test, or extend. Adding a new agent type required modifying 5+ files.
The Approach
Designed a plugin-based agent architecture using TypeScript discriminated unions, factory pattern, and YAML configuration. Each agent became a self-contained module with its own prompt, tools, and validation.
Results
Orchestrator LOC
2,300
50
Time to add new agent
4 hours
15 minutes
Test coverage
12%
94%
aiarchitecturerefactoring
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