https://aifundamentals.dev/articles/ A tool-agnostic agentic coding course for developers: context, instructions, and validation loops for AI agents. en Fri, 23 Oct 2026 00:00:00 GMT https://aifundamentals.dev/articles/context-engineering-for-coding-agents/ https://aifundamentals.dev/articles/context-engineering-for-coding-agents/ Fri, 23 Oct 2026 00:00:00 GMT Most agent tokens are old context re-sent on every call. Learn how a coding agent uses its context window and how to keep it small and relevant. https://aifundamentals.dev/articles/how-to-review-agent-written-code/ https://aifundamentals.dev/articles/how-to-review-agent-written-code/ Fri, 23 Oct 2026 00:00:00 GMT Agent-written code needs a different review. What to check once the tests pass, which patterns create tech debt, and how to keep changes small. https://aifundamentals.dev/articles/subagent-orchestration-for-coding-agents/ https://aifundamentals.dev/articles/subagent-orchestration-for-coding-agents/ Fri, 23 Oct 2026 00:00:00 GMT Orchestration lets a stronger model plan and verify while cheaper models do the narrow work. How to set it up and the mistake that makes subagents expensive. https://aifundamentals.dev/articles/what-is-agentic-coding/ https://aifundamentals.dev/articles/what-is-agentic-coding/ Fri, 23 Oct 2026 00:00:00 GMT Agentic coding means an AI agent plans, edits, runs tools, and checks its work while you set the goal and verify the result. Here is the system behind it. https://aifundamentals.dev/articles/validation-loops-for-agent-written-code/ https://aifundamentals.dev/articles/validation-loops-for-agent-written-code/ Fri, 23 Oct 2026 00:00:00 GMT A validation loop is an automated check the agent runs on its own changes. Learn which checks to use, how to wire them in, and how to enforce them. https://aifundamentals.dev/articles/how-to-write-agents-md/ https://aifundamentals.dev/articles/how-to-write-agents-md/ Fri, 23 Oct 2026 00:00:00 GMT Keep AGENTS.md short, specific, and enforced. What to include, what to leave out, and why instructions alone are only suggestions to an agent.