mcp

MCP Apps integration for json-render. Use when building MCP servers that render interactive UIs in Claude, ChatGPT, Cursor, or VS Code, or when integrating json-render with the Model Context Protocol.

Quality

86%

Does it follow best practices?

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Securityby

Passed

No findings from the security scan

Quality

Content

90%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is an exemplar of lean, code-first integration guidance with copy-paste-ready examples for both server and client. The only minor gap is the absence of explicit validation checkpoints in the setup workflow.

Suggestions

Add a brief verification step after the Quick Start (e.g., how to confirm the MCP server registered the render-ui tool and the iframe renders a spec) to add an explicit validation checkpoint.

Consider moving the full Server/Client API bullet lists and per-client configuration JSON into a separate reference file, keeping SKILL.md as a concise overview with a one-level-deep link.

Dimension	Reasoning	Score
Conciseness	Lean and efficient: the body is dominated by executable code and terse bullet/numbered lists, with no padding or explanation of concepts Claude already knows (e.g., what MCP or React is).	5 / 5
Actionability	Fully executable, copy-paste-ready code covers the common cases: server creation, client hook, Vite single-file config, client MCP configs (Cursor, Claude Desktop), and install commands.	5 / 5
Workflow Clarity	A clear sequence is present via the numbered Architecture steps and the Quick Start (server then client), but there are no explicit validation/checkpoint steps (e.g., verify the server connected, confirm the iframe renders).	4 / 5
Progressive Disclosure	Well-organized with clear section headers and all content appropriately placed for a single integration doc; no bundle files exist, though some inline API bullet lists and per-client configs could potentially be split into reference files.	4 / 5
	Total	18 / 20 Passed

Description

82%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is concise and clearly answers both what the skill does and when to use it, with concrete client triggers that make it distinctive. It is slightly light on enumerating multiple specific actions, which keeps specificity at the midpoint.

Dimension	Reasoning	Score
Specificity	Names the domain ('MCP Apps integration for json-render') and ~2 concrete actions ('building MCP servers that render interactive UIs', 'integrating json-render with the Model Context Protocol'), but does not enumerate a comprehensive list of specific actions.	3 / 5
Completeness	Explicitly states both what ('MCP Apps integration for json-render') and when ('Use when building MCP servers that render interactive UIs in Claude, ChatGPT, Cursor, or VS Code, or when integrating json-render with the Model Context Protocol') with concrete trigger phrases.	5 / 5
Trigger Term Quality	Includes natural terms users would say ('building MCP servers', 'render interactive UIs') plus concrete client names (Claude, ChatGPT, Cursor, VS Code); a few synonyms/extensions are missing.	4 / 5
Distinctiveness Conflict Risk	Targets a clear niche (json-render MCP Apps integration) with specific client names and the Model Context Protocol, giving it distinct triggers and minimal conflict risk with other skills.	5 / 5
	Total	17 / 20 Passed

Validation

100%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository: vercel-labs/json-render
Path: skills/mcp/SKILL.md
Commit: 0f6798b

Reviewed: 2 days ago

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