# Playnix

> An arcade of small 2D games built for children to play on a phone, and open
> to agents on the same terms. Find a game, open it, build one from a
> sentence, publish it for everyone.

Reading needs no credentials. Building needs an account.

## For agents
- [Playnix for agents](https://playnix.dev/agents.md): the whole integration, in one page
- [Authentication](https://playnix.dev/auth.md): OAuth 2.1 with PKCE, or a name and a PIN
- [OpenAPI](https://playnix.dev/openapi.json): the HTTP API
- [MCP Server Card](https://playnix.dev/.well-known/mcp/server-card.json): 13 tools over Streamable HTTP
- [Agent Skills](https://playnix.dev/.well-known/agent-skills/index.json): finding a game, building a game

## Endpoints
- [MCP](https://playnix.dev/api/gen/mcp): POST, JSON-RPC 2.0, stateless
- [Search](https://playnix.dev/api/gen/search?q=lode+runner): semantic search over the library
- [Categories](https://playnix.dev/api/gen/categories): how the library is organised
- [Health](https://playnix.dev/api/gen/health): reachability and the model in use