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Build a Coding Agent from Scratch Course

Building a Coding Agent from Scratch is an open-source course by Decoding AI that teaches how to engineer custom AI agent harnesses from scratch, progressing from a basic agent loop to cloud-deployed swarms. The course emphasizes that the harness—not the model—determines agent quality, covering permission gates, sandboxes, tracing, and parallel execution across 8 lessons.

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Built for AI agentsACO · 3509 tokens

Summary

Building a Coding Agent from Scratch is an open-source course by Decoding AI that teaches how to engineer custom AI agent harnesses from scratch, progressing from a basic agent loop to cloud-deployed swarms. The course emphasizes that the harness—not the model—determines agent quality, covering permission gates, sandboxes, tracing, and parallel execution across 8 lessons.

Tags

coding-agent · ai-engineering · course · open-source · tool-calling · harness-design · cloud-deployment

Key entities

Decoding AI (organization, 0.95) · Modal (organization, 0.9) · Opik (by Comet) (organization, 0.9) · Kitaru (by ZenML) (organization, 0.9) · Pydantic AI (technology, 0.85) · Gemini (technology, 0.9) · OpenRouter (technology, 0.85) · Qwen (technology, 0.8) · Claude Code (technology, 0.85) · Docker (technology, 0.85) · ReAct loop (concept, 0.85) · tool-calling agent (concept, 0.9) · Terminal-Bench (event, 0.8) · LangChain (organization, 0.85)

Classification

tutorial · language en · status final

Provenance

claude-haiku-4-5 via @stacklist/be@0.1.0, confidence 0.85, 24 Jul 2026