GGUI 0.28 ships an MCP-native generative UI protocol and runtime
Released October 13, GGUI 0.28 ships 32 lockstep packages connecting UI generation, updates and user-event return through MCP tools, data contracts and sandboxed hosts.
Why it matters
It offers another implementation path for tools to return interfaces by placing generation, cached blueprints, host rendering and interaction feedback behind one self-hostable protocol boundary.
A closer look
The official repository provides a CLI, MCP server, protocol types, and React and React Native host helpers, with reusable blueprints for known interfaces. Version 0.28 changes the default generation and evaluator-fallback model to Claude Haiku 5.5, adds runtime exports and returns resources/read as application/json; the release says the wire format is unchanged. Self-hosted paths integrate several agent frameworks, while the hosted path supplies managed generation.
Who this is for
MCP hosts, agent frameworks and generative UI infrastructure teams
Original sources
- GGUI official release ↗github.com
- Official documentation ↗docs.ggui.ai
- Official repository and scope ↗github.com
Revisions & corrections (1)
— Historical backfill discovered outside the source registry. The official October 13 release and repository establish package scope, date, protocol status, deployment modes and limitations; unverifiable benchmark figures are excluded.