Downcity Docs

Downcity is agent infrastructure for AI builders. These docs help you run local agents, connect City, connect models and plugins, and turn agent workflows into real product surfaces.

The shortest product model:

• products own the user experience
• agents execute work inside explicit runtime boundaries
• Downcity provides the reusable runtime layer for models, tools, tasks, memory, services, permissions, usage, billing, and control surfaces

Start Here

1. Quickstart
2. Agent
3. Plugin
4. City
5. Federation & Service
6. Architecture
7. Security
8. CLI
9. Agent SDK
10. City SDK
11. Payments
12. Agent Plugins Docs
13. UI SDK

Documentation Spaces

• Products: product-level docs: Agent, Plugin, City, Federation, security, and reference.
• Agent SDK: programmable agents, sessions, local/remote agent, model binding, and plugin APIs.
• City SDK: City, Federation, downcity identity, tokens, service/action infrastructure, and deployment.
• Payments: accounts, balance, usage, and Stripe payment services.
• Agent Plugins Docs: built-in plugin manuals and plugin examples.
• UI SDK: reusable UI components and Workboard surfaces.