The server defines 3 tools with explicit registration in src/index.ts. All tools have names, descriptions, and input schemas visible. However, there are significant gaps: (1) Parameter descriptions are minimal (1-2 line descriptions like 'Absolute path to the project root' vs. 10-20 char minimum standard). (2) No output schemas are documented, callers cannot predict the structure of stdout/stderr responses. (3) No guidance on error recovery or error categorization. (4) Tool naming could be clearer: 'init_shadcn' is vague about what 'shadcn' initialization entails; 'add_component' uses singular noun but accepts plural components array. (5) No indication of destructive vs. read-only operations in descriptions (though risk is marked in metadata). (6) Parameter validation is weak: directory is a string with minimal guidance on path format, components array has no constraint on valid names. Baseline: average production tool description is 194 chars; these are 30-50 chars. Baseline: 100% of A+ tools document outputs; this server documents none.

• Add explicit output schemas to all tools. Example for init_shadcn: 'Output is a single text field containing stdout and stderr from npx shadcn-ui init. Returns command exit status and setup logs.'
• Expand parameter descriptions to 80+ chars with actionable constraints. Example: 'directory (string): Absolute filesystem path to the project root. Must exist and contain a package.json. E.g., /home/user/my-app.'
• Replace examples with enums. For add_component.components, define a discovery call: 'Call list_components first to retrieve valid component names (button, card, alert, etc.). Passing invalid names will fail.'
• Add error recovery hints to tool descriptions. Example: 'If init_shadcn fails with "Cannot find package.json", verify the directory exists and is a Node.js project.'
• Rename add_component → add_components to match the plural-array parameter.
• Document state changes explicitly. Prefix init_shadcn and add_component descriptions with 'Modifies project files:' to signal side effects.
• Add parameter validation inside CallToolRequestSchema handler. For directory param, verify path exists and is absolute. For components array, validate non-empty and provide specific error: 'components must be a non-empty array of valid shadcn component names. Call list_components to discover available names.'
• Implement graceful error messages that guide recovery. When exec fails, parse stderr and return contextual guidance. Example: 'shadcn-ui init failed: No package.json found. Is this a Node.js project? Run npm init first, then retry init_shadcn.'