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Building AI Agents: Harness Engineering

Shipping Agents to Production

Human-in-the-loop, security, and a capstone: an agent that completes a real task safely.

Level
Intermediate
Lessons
3
Total time
1h 15m
Simulations
3
Included in Building AI Agents: Harness Engineering · $9
Tools you'll use
  • Python
  • Claude
  • OpenAI
  • FastAPI
Skills
  • Human-in-the-loop
  • Agent security

What you will be able to do

  • Add human approval at the right points
  • Ship an agent with limits and monitoring

Before you start

A suggestion, never a lock — you can start here.

  • evaluating-agents
Modules that help first

Syllabus

3 lessons · 1h 15m

Every lesson's title and summary is public. The lessons themselves open once you own the track.

Every lesson in Building AI Agents: Harness Engineering

  1. Human-in-the-Loop

    14 min

    Where human approval is needed, and how to make it unobtrusive.

    Included with the track Simulation

  2. Agent Security and Prompt Injection

    16 min

    A threat model for agents that read untrusted data and hold real tools.

    Included with the track Simulation

  3. Capstone: a Research Agent

    45 min

    An agent that searches, reads and summarises — with citations, cost limits and full logs.

    Included with the track Simulation
Lifetime access
$9
Buy the track
More in Building AI Agents: Harness Engineering
Module · Intermediate

AI Agent Fundamentals

What an agent is, what a harness is, and when a problem actually needs an agent — and when it does not.

  • 4 lessons
  • 1h 13m
  • 4 simulations
Included in Building AI Agents: Harness Engineering· $9
Module · Intermediate

Harness Engineering

Context, permissions, sandboxing, errors and tracing — everything that makes an agent trustworthy outside a demo.

  • 4 lessons
  • 1h 2m
  • 5 simulations
Included in Building AI Agents: Harness Engineering· $9
Module · Intermediate

Tools and the Model Context Protocol

Connecting agents to APIs, databases and files — with MCP as the standard interface.

  • 3 lessons
  • 50 min
  • 2 simulations
Included in Building AI Agents: Harness Engineering· $9
Module · Intermediate

Multi-Agent Systems

Orchestrators and workers, subagents and context isolation — when splitting the work helps, and when it hurts.

  • 3 lessons
  • 42 min
  • 3 simulations
Included in Building AI Agents: Harness Engineering· $9