kandev/docs/specs/canvases

system, owner, specification_version, status, migration, last_updated

system	owner	specification_version	status	migration	last_updated
canvases	canvases	1	draft	complete	2026-09-10

Canvases

Canvases own agent-authored task applications and their promotion to workspace applications. The system owns canvas scope, source lineage, release selection, editing sessions, discovery, and portable canvas distribution.

The Plugins system owns the isolated web-application runtime, permissions, Kandev data access, state, events, and package validation. The task system remains authoritative for task data and permissions.

Requirements

• Agent-authored web-app canvases
• Canvas marketplace and sharing
• Deprecated collaborative canvases

System design

• Agent-authored web-app canvases
• Canvas marketplace and sharing
• Superseded collaborative canvases

Related context

• Runtime and permission fix plan
• Agent MCP discovery guidance
• MCP discovery and canvas prompt plan
• GitHub Copilot App Canvas reference
• Plugin-backed web-app canvases decision
• Plugin-backed canvases implementation plan
• Canvas UX follow-up implementation plan
• Canvas marketplace implementation plan
• Historical declarative canvas plan