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Summary

Change from text/vnd.mcp.ui+html to text/html+mcp.

Rationale

  • It's an unregistered subtype, allowed for private use per RFC 6838
  • The +suffix form indicates MCP-specific semantics (the postMessage protocol)
  • Content is still valid HTML and can be rendered as-such
  • Following RFC 6838, +mcp could potentially be registered as an official suffix with IANA

Changes

  • Updated specification/draft/apps.mdx (11 occurrences)
  • Updated examples/simple-server/server.ts (2 occurrences)

🤖 Generated with Claude Code

Change from text/vnd.mcp.ui+html to text/html+mcp.

Rationale:
- It's an unregistered subtype, allowed for private use
- The +suffix form indicates MCP-specific semantics (postMessage protocol)
- Content is still valid HTML and can be rendered as-such
- Following RFC 6838, +mcp could be registered as an official suffix

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
@antonpk1 antonpk1 force-pushed the fix/mime-type-suffix-format branch from 98dbc31 to c65006a Compare November 21, 2025 21:38
@antonpk1 antonpk1 merged commit 0c56400 into main Nov 21, 2025
2 checks passed
@ochafik ochafik deleted the fix/mime-type-suffix-format branch November 25, 2025 03:49
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3 participants