# Downcity

> Open-source agent runtime and infrastructure for building agent products: sessions, workspaces, Powers, and shared model, identity, credits, usage and payment services.

## Start here

- [Download Desktop and Chrome Extension](https://downcity.ai/download/): supported platforms, installation requirements and downloads.
- [Install the CLI](https://downcity.ai/start/): run and manage a local City.
- [Build your first agent](https://downcity.ai/en/docs/quickstart/): prerequisites and setup.
- [Embed Agent SDK](https://downcity.ai/en/agent-sdk-docs/local-agent/quickstart/): integrate local execution into a TypeScript application.
- [Product overview](https://downcity.ai/product/): how the runtime, SDKs and shared services fit together.

## License and costs

The open-source runtime is licensed under Apache 2.0. Self-hosting infrastructure and model providers may incur separate costs. Open-source licensing does not imply that hosted services or model usage are free. Consult the relevant provider and checkout terms for current charges.

## Documentation and articles (English)

- [Docs](https://downcity.ai/en/docs/)
- [City SDK](https://downcity.ai/en/city-sdk-docs/)
- [Agent SDK](https://downcity.ai/en/agent-sdk-docs/)
- [Payments](https://downcity.ai/en/payments/)
- [Powers](https://downcity.ai/en/powers-docs/)
- [UI SDK](https://downcity.ai/en/ui-sdk-docs/)
- [Blog](https://downcity.ai/en/blog/)

## 中文文档与文章

- [文档](https://downcity.ai/zh/docs/)
- [City SDK](https://downcity.ai/zh/city-sdk-docs/)
- [Agent SDK](https://downcity.ai/zh/agent-sdk-docs/)
- [Payments](https://downcity.ai/zh/payments/)
- [Power](https://downcity.ai/zh/powers-docs/)
- [UI SDK](https://downcity.ai/zh/ui-sdk-docs/)
- [文章](https://downcity.ai/zh/blog/)

## Resources

- [Full documentation](https://downcity.ai/llms-full.txt): complete documentation text; larger than this index.
- [FAQ](https://downcity.ai/community/faq/): common product questions.
- [GitHub](https://github.com/genesiscosmos/downcity): source code and issues.