# Huejoy > Huejoy is a deterministic, local-first palette studio for generating, refining, sharing, and exporting two-to-eight-color palettes. - Product: https://huejoy-4h9.pages.dev/ - Compatibility agent interface: https://huejoy-4h9.pages.dev/agent.json - Current typed agent interface: https://huejoy-4h9.pages.dev/agent-v3.json - Live portable state: read #huejoy-agent-handoff or window.__HUEJOY_AGENT_HANDOFF__ on an open page. - Compatibility export: read #huejoy-agent-config or window.__HUEJOY_AGENT_CONFIG__ on an open page. The compact hj1/hj2/hj3 token in portableState.stateToken is the exact portable palette identity. Session selection and active role are browser-local context. Huejoy is a browser-agent surface, not an A2A protocol server. A2A discovery paths return 404; there is no A2A transport, task lifecycle, or streaming endpoint. Browser controls require no account; Saved remains in this browser's local storage, and UI export starts a download. This convenience guide does not guarantee crawler ranking or client support. WebMCP is progressive and described in agent-v3.json; Huejoy does not expose a remote MCP service.