A field guide and working lab for agentic systems
Understand agents. Build the machinery. Compare the options.
Learn the concepts without committing to a framework, build a harness from first principles, and use reproducible evidence when you are ready to choose.
Your route
What are you trying to do today?
Choose one goal. We will keep the rest out of your way.
Recommended first step
See the whole system before learning its parts
Build a mental model of the model, harness, tools, state, boundaries, and environment.
Open the learning path
Four separate spaces
Move through the ecosystem without mixing contexts
01
Learn
Concepts in a deliberate order, from the agent loop to reliable operation.
Follow the curriculum → 02Build
Interactive labs, executable lessons, and design decisions for your own framework-neutral harness.
Build from scratch → 03Compare
Choose between building-block frameworks or complete coding harnesses, then inspect the right evidence.
Choose what to compare → 04Reference
Run modes, methodology, controls, commands, schemas, and project details.
Look something up →Know what the evidence means
Three run modes. Three different claims.
The site labels evidence by what the run can actually prove.
MockWiring and mechanics
CodexReal-model functional check
LiveNative provider benchmark
Spend ten minutes on the mental model.
It gives every later page a place to fit.
Begin with module 1