shadcn/ui

Last tested 2026-10-22

Score 95/100 · Last tested 2026-10-22 · Version tested 3.0.0 · Package @jpisnice/shadcn-ui-mcp-server · Repo Jpisnice/shadcn-ui-mcp-server

Summary: shadcn/ui completed an MCP handshake without credentials and exposed 10 tools.

Test results

TestResultPointsEvidence
installpass20npm install @jpisnice/shadcn-ui-mcp-server (Node 20, Linux) succeeded in 2s.
handshakepass30MCP initialize + tools/list over stdio succeeded with no credentials; 10 tools listed in 1.4s.
maintenancepass25Repo pushed 18 days before test; 3,065 GitHub stars.
docspartial10README over 3,000 chars; install instructions present. Automated check of the package's own README (README shipped in npm package).
licensepass10MIT (OSI-approved).

Local-model readiness

Schema context cost: ~693 tokens for 10 tools (3,056 bytes) · about 8% of an 8k context. Method: tiktoken cl100k_base over compact JSON of name+description+inputSchema (approximate).

Small-model friendly (schema heuristic, not a model result): high.

Small-model task runs: Not yet tested.

Not tested

We did not test behavior with real credentials, security, or performance under load. These are planned; see methodology.

Tools listed

get_component, get_component_demo, list_components, get_component_metadata, get_directory_structure, get_block, list_blocks, apply_theme, list_themes, get_theme

Config used in our test

{
  "mcpServers": {
    "shadcn-ui": {
      "command": "npx",
      "args": [
        "-y",
        "@jpisnice/shadcn-ui-mcp-server"
      ]
    }
  }
}

FAQ

Is shadcn/ui deprecated?

No. @jpisnice/shadcn-ui-mcp-server was not deprecated or archived when we last tested it on 2026-10-22.

What replaces shadcn/ui?

Nothing; shadcn/ui is not deprecated as of 2026-10-22.

Does shadcn/ui need an API key?

No. It completed an MCP handshake with no credentials and listed 10 tools.

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Tested by TestedMCP: 95/100

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