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Flue · Course Guide ​

This course spans 19 chapters, based on the Flue official documentation and repository, mastering the open-source Agent Harness framework by the Astro team.

What You Will Learn ​

StageChaptersContent
Getting Started01–05Harness philosophy, project scaffold, 'use agent' functions, model config, sessions
Intermediate06–11Tools, Skills, MCP integration, Subagents, Channels, Sandboxes
Advanced12–16Durability, Observability, CLI & local run, Node.js deployment, CI & hosting
Production Practice17–19Three capstones: GitHub triage Agent, Slack on-call Assistant (with framework comparison), Code review Agent

Official Reference Sources ​

SourceLink
GitHubhttps://github.com/withastro/flue
Documentationhttps://flue.astro.build

Prerequisites ​

  • TypeScript / Node.js basics;
  • Node.js ≥ 22.19.0;
  • At least one LLM provider API key (Anthropic / OpenAI / DeepSeek compatible).

👉 Start with Chapter 1.