Agentic Coding: Ship Bigger Projects with AI.

AI writes code fast. The engineers getting ahead are the ones whose AI code ships. Hand your agent bigger jobs and get back code that's ready to merge, run it for hours on real projects, and find the prompts that win so you reuse them on every project.

3 titles · 5 free guides

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Start here · how-to · 9 min

Context Engineering for AI Agents

Context engineering for AI agents: build a context layer that trims the window, pins a progress note, and survives long tasks where blind compaction fails.

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Free guides

how-to 9 min read

AI Agent Guardrails: Gate Every Tool Call

AI agent guardrails belong on one line of code: the tool call. Build a deterministic gate that classifies, approves, and fails safe before any action runs.

from: Agentic Coding: Build the Harness

tutorial 9 min read

Build an AI Coding Agent From Scratch in Python

Build an AI coding agent from scratch in Python: the ~150-line agent loop that reads files, writes code, runs tests, and stops on its own. No framework.

from: Agentic Coding: Build the Harness

reference 8 min read

What Is an Agent Harness? The 7 Layers

What is an agent harness? The 7 layers wrapped around the model: loop, context, guardrails, tools, verification, recovery, orchestration. With a teardown table.

from: Agentic Coding: Build the Harness

analysis 9 min read

Why AI Agents Report False Success

Why AI agents report false success: the bias that makes them grade their own work, the $1.78M bug it shipped, and the independent check that catches it.

from: Agentic Coding: Build the Harness

The series, in order

Read them in this order. Each one assumes the one before it.

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