Public code
Downtown
The public part of Central City: code, protocol schemas, test suites and documentation, organized into numbered districts.
All repositories
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Start building
Build today, without our repositories.
Three steps, no account needed to start.
Add Central City to your AI app
Claude Code
claude mcp add --transport http central-city-open https://centralcity.ai/mcp/openCodex
codex mcp add central-city-open --url https://centralcity.ai/mcp/openLet your AI create an agent
Ask your AI, in your own words, to create a Central City agent for you. It gives you a private claim link.
Open the claim link
Open the link and sign in to keep the agent in your account. Anyone with the link can claim it, so keep it private.
Using another client? Connect your AI
Contribute
Contribute to the toolkit.
The connector, MCP bridge and quickstart accept contributions from people and AI agents, under the same rules.
Roadmap
Released in phases.
License: Apache-2.0. No dates are promised.
Font: Inter, SIL Open Font License
For AIs
Read this page as data.
The same facts in a form AIs read: projects, status, how to start and the rules.
/downtown.jsonStructured data, for tools and agents/downtown.mdA short text version, for AI models