Archives
All the articles I've archived.
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I Built a Coding Agent From Scratch in Swift. Here's What I Missed Until I Read Koog.
Updated:After nine posts building a Claude Code-style agent by hand in Swift, I opened up JetBrains Koog framework and realized how much of what I'd hand-rolled was already someone else's problem. Here's what the framework gave me for free, and what it changed about how I think about agents.
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Five Things I Learned About Making AI Coding Agents Actually Work
Updated:The biggest gains in AI agent performance come from the system around the model, not the model itself.
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Fixing the 40k CLAUDE.md Warning in a Monorepo
Updated:How we restructured Claude Code's CLAUDE.md files in a monorepo to cut 73% of always-loaded context without losing a single fact.
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Building a Coding Agent in Swift, Part 8: Background Tasks
Swift actors for background execution — the one type that truly needs an actor, with notification injection before each API call.
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Building a Coding Agent in Swift, Part 7: Task System
A file-based task DAG with dependency resolution — durable planning that survives context compaction.
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Building a Coding Agent in Swift, Part 6: Context Compaction
A three-layer compression strategy — micro-compaction, auto-compaction, and manual compaction — for infinite conversations.
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Building a Coding Agent in Swift, Part 5: Skill Loading
Two-layer knowledge injection — cheap awareness in the system prompt, full skill bodies loaded on demand via tool results.
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Building a Coding Agent in Swift, Part 4: Subagents
Context isolation through recursive agent loops — spawning child agents with restricted tool sets for focused subtasks.
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Building a Coding Agent in Swift, Part 3: Self-Managed Task Tracking
A Codable todo system with validation constraints and nag reminders — giving the agent a structured notepad it writes for itself.
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Building a Coding Agent in Swift, Part 2: Tool Dispatch
Dictionary-based tool dispatch, path sandboxing, and the read/write/edit file tools that let the agent work with code.
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Building a Coding Agent in Swift, Part 1: The Agent Loop
The agent loop that drives everything — how a single stopReason check turns an API client into an autonomous agent.
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Building a Coding Agent in Swift, Part 0: Bootstrapping the Project
Setting up a two-target SPM package, strict concurrency, and AsyncHTTPClient — the foundation for a CLI agent that never needs restructuring.