This is a code generator (create-nimbus-connector), not a production MCP server. The 6 tools in fixtures/snapshots are GENERATED EXAMPLES, not the actual server being evaluated. The generator itself has no tools. Tool definitions in snapshots show basic schemas and descriptions but lack depth: descriptions are 10-30 chars (well below 50-200 char baseline for LLM optimization), parameters lack type constraints (enums, ranges), no output schemas documented, no error handling guidance. The generator code (src/derive/server/tools-hand.ts) shows sophisticated AST parsing but does not itself expose tools to clients. Scoring reflects the generated example quality, which is minimal.

• Expand tool descriptions to 50-200 characters. E.g., 'zzwrite_item_list' → 'Retrieve all items in the list. Returns item IDs, titles, scopes, and draft status. Use this to discover available items before creating or updating.'
• Document output schemas for all tools. E.g., zzwrite_item_list returns {items: [{id: string, title: string, scope?: string, draft: boolean}], total: number}.
• Add enums to 'scope' and 'mode' parameters. E.g., scope: enum ['personal', 'shared', 'archived']; mode: enum ['replace', 'merge', 'append'].
• Add parameter descriptions for all fields. E.g., 'draft: boolean, if true, item is not visible to others until published.'
• For zzwrite_item_delete, add a 'confirm' parameter (boolean, default false) or return a confirmation token requiring a second call to finalize deletion.