Why This Blog Exists: Practical Anthropic Development Without the Hype
Context & Tools is a practical developer notebook dedicated to reliable Anthropic application development. Founded in Boise by Caleb Fletcher, the site rejects hype in favor of reproducible tutorials, honest testing, and robust error handling. We focus on building the smallest useful version of an application, testing its real-world failure modes, and turning API demos into production-ready software.
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Your First Anthropic-5 API Request in Python: A Minimal Setup That Actually Works
Learn how to write your very first Anthropic-5 API request in Python using a minimal, clean setup. This tutorial walks t...
Anthropic API Authentication, Environment Variables, and Safe Local Setup
Learn how to safely secure your Anthropic API credentials by avoiding hard-coded secrets. This practical guide walks thr...
Messages, System Instructions, and Context Windows Explained for Developers
Master the Anthropic Messages API by understanding turn-taking structures, system instructions, and how conversation his...
Build a Minimal Tool-Using Agent in Python
Learn how to build a minimal tool-using agent in Python using the Anthropic Messages API without heavy frameworks. This ...
How the Agent Loop Works: Decide, Call, Observe, Respond
This post breaks down the core mechanics of AI agent systems by examining the four-stage loop: Decide, Call, Observe, an...
Add a Human Approval Step Before an Agent Takes Action
This article explores how to make AI agents safer by adding a mandatory human approval step before any side-effecting to...