Dated context

Compatibility timeline

These events can change how a claim must be scoped. A launch, registry entry, or community announcement does not change a support cell by itself.

  1. Can My Agent Use · researchEvidence Atlas research snapshot and product-model review
  2. AHP · standard-productVS Code announced Agent Host and the open Agent Host Protocol
  3. WebMCP · standardWebMCP Draft Community Group Report was dated August 26, 2026
  4. Kiro · productKiro documented Agent Skills and Agent Plugins-based Powers across surfaces
  5. A2UI · standardA2UI 1.0 candidate was updated
  6. VS Code · productMCP Apps and Agent Skills reached documented VS Code milestones
  7. ACP · registryThe ACP Registry went live
  8. MCP Apps · standardStable MCP Apps extension revision was published
  9. MCP · standardMCP revision added tasks and expanded elicitation and sampling
  10. MCP Apps · proposalMCP Apps proposal was announced
  11. ACP · productZed Agent Extensions simplified ACP agent distribution
  12. ACP · productCodex integration in Zed shipped through ACP
  13. ACP · ecosystemZed published an ACP ecosystem progress report
  14. ACP · announcementZed described bring-your-own-agent integration and ACP
  15. A2A · governanceGoogle donated A2A to the Linux Foundation
  16. MCP · historicalLegacy HTTP and SSE transport family is referenced by later compatibility documentation