Jangts Agent CoreInterfaces, implementations and runtime mechanics

From your first Agent to composable applications, going deeper along one shared set of interfaces.

Core · Interfaces & guarantees

Execution, models, tools, budgets, cancellation and observation; parameters accept contract-compliant objects or classes.

Reuse, semantic policies and configuration builders that grow from simple to advanced on the same contracts.

Knowledge, answering, retrieval, artifacts, recovery and MockGPT, composed by the App as needed.

You want to know	Start here
Why it is designed this way	Understand the design
What happens in one request	Understand the mechanics
Write a small working app	Build an Agent App
Look up fields, overloads, return values and members	Full API / Module index
See one business case at different configuration depths	Progressive examples
Mock models and offline debugging	MockGPT Kit / Full API
Review the policies behind defaults	Policy source
Read the handbook by topic	Handbook