HARNESS ENGINEERING

AI is the brain.
The harness is the body.

The Model= the brain
1 · Context Eyes + memory
Memory, RAG, retrieval, knowledge, instructions
2 · Action Hands + limbs
Tools, MCP, APIs, browser, code execution, files
3 · Orchestration Nervous system
Planning, loops, state, checkpoints, sub-agents, workflows
4 · Control Immune system + reflexes
Guardrails, permissions, validations, approvals
5 · Feedback Vital signs
Evals, tracing, logs, monitoring, error signals, latency
Click each icon to see its role in the body.
The model needs a whole body around it.
Building an agent? Work on all five pillars.