shadcn-ui-mcp-server
An MCP (Model Context Protocol) server that provides AI assistants reference data for shadcn/ui components (component lists, details, examples, and keyword search). It scrapes and caches information from ui.shadcn.com and the shadcn/ui GitHub repository, exposing this via MCP tools over stdio.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Security posture is mostly about local execution and data retrieval. TLS enforcement for outbound scraping is assumed (but not explicitly stated). No auth/scopes are documented (low access control). The server likely performs outbound HTTP to ui.shadcn.com and GitHub (potential data exposure to third parties) and may execute parsing/scraping logic (cheerio) whose input is untrusted HTML—robust parsing and safe handling are important. No details are provided about secret management or whether logs could leak data.
⚡ Reliability
Best When
During interactive development with an MCP-capable IDE/agent that benefits from local stdio tools to fetch component references.
Avoid When
When you need strict guarantees about doc correctness/consistency over time, or when data egress/caching policies disallow scraping external sites.
Use Cases
- • Ask an AI to list available shadcn/ui components
- • Retrieve structured component docs (props/variants/usage) for a given component name
- • Get copyable usage examples/snippets for implementing a UI component
- • Support component search by keyword for faster discovery during development
Not For
- • Production systems that require a stable, officially versioned API for shadcn/ui documentation without periodic scraping risk
- • Environments that cannot make outbound network requests to ui.shadcn.com / GitHub
- • Use cases needing fine-grained access control or multi-tenant authorization
Interface
Authentication
No authentication is described; MCP runs locally (stdio) via the client/desktop configuration.
Pricing
No pricing information provided; appears to be open-source tooling distributed via npm (MIT).
Agent Metadata
Known Gotchas
- ⚠ Scraping/caching implies freshness may lag and behavior may change if upstream HTML/pages change
- ⚠ Runtime relies on stdio MCP; debugging may require MCP Inspector as noted in the README
- ⚠ Without documented rate limits, agents should avoid aggressive repeated queries (especially during cache warmup)
- ⚠ Tool outputs may be large (component examples/props), so agents should request only what they need
Alternatives
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Scores are editorial opinions as of 2026-03-30.