mcp-apps-protocol

TheLobbi/claude

SkillLoads cleanly

This skill should be used when implementing or debugging the MCP Apps extension — ui:// resource URIs, the text/html;profile=mcp-app mimeType, every _meta.ui…

Scores
out of 100 · grade B+

2026-08-15

Works

40% of the score

100/100

Loads cleanly: valid frontmatter, required fields present, no dangling references.

Maintained

25% of the score

100/100

no commits in the last 12 weeks

Adopted

20% of the score

18/100

18 stars on the source repo.

Documented

15% of the score

81/100

1,170 words with worked examples.

Loads cleanly. Every structural check Claude Code needs to register this passed. Last commit 2 days ago.

Install

npx skills add TheLobbi/claude/mcp-apps-protocol

What it says it does

This skill should be used when implementing or debugging the MCP Apps extension — ui:// resource URIs, the text/html;profile=mcp-app mimeType, every _meta.ui field, the full ui/* JSON-RPC bridge over postMessage, tool visibility, host context, display modes, and the five lifecycle phases.

Every number above came out of reading the file and its repository. Nothing is a judgement call, nothing is a model’s opinion, and nothing can be paid for. The full method is published. Source last committed 2026-08-13.

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Published by Toolproof, the masthead over this index and eight others. The method behind the number is at toolproof.kynth.studio/methodology, and the whole thing is readable as JSON with no key at /api.