Slima MCP exhibits MAJOR gaps in definition quality across the 25-tool inventory. While tool NAMING is strong (verb-led, clear intent), DESCRIPTIONS are sparse and generic, and INPUT SCHEMAS are largely inferred rather than explicitly visible in the provided source. Critical issues: (1) Parameter schemas are documented in the tool list but NOT visible in actual source code registrations, e.g., 'load_guide' claims an input schema for 'slug', but the source file 'src/core/server-instructions.ts' is a static string with no registration code shown. (2) Most tool descriptions are 1-2 sentences without explaining WHEN to use each tool vs. similar ones, WHAT happens (state change?), or error recovery. (3) No output schemas are documented, agents cannot plan downstream tool calls. (4) File paths reference 'scripts/e2e.mjs' and 'scripts/phase1_smoke.mjs' (test files), not production source, suggesting tool definitions may be inferred or incomplete. (5) Destructive tools (delete_file, update_*) lack confirmation patterns or dry-run options. The server is functional but poorly optimized for LLM reasoning.

• Add explicit JSON Schema definitions for all tool inputs to src/core/tools/*.ts. Currently, parameters are documented in text only. Use Zod (already a dependency) to define and validate input schemas, then expose them in tool registration.
• Expand tool descriptions to 100-200 characters each, following this template: '[What], [When to use], [Example]. [What it returns or key side effects.]' Example: 'Search across all files in a book for text matches. Use this for discovery or to find references before editing. Returns paginated results with file paths, line numbers, and snippet context.'
• Document output schemas for every tool. Use JSDoc @returns or a parallel schema file. For list_books, specify: 'Returns {books: [{id, title, status, chapters_count}], total, next_cursor}.' This enables LLMs to chain tools correctly.
• Consolidate write operations: remove 'write_file' as an alias and pick one canonical tool (update_file) with an 'create_if_missing' boolean parameter. Reduces LLM decision overhead.
• Add a confirmation or dry-run variant for destructive ops. E.g., 'delete_file_confirm' that returns a preview of what will be deleted, then requires a second call with a confirmation token. Or add a 'dry_run: true' param to preview changes without committing.
• Document the schema for the 'operations' array in update_beat_board, update_timeline, update_script, etc. Either inline in the parameter description ('operations: array of {type: string, id: string, data: object}') or link to a schema definition.

Inferred effective spec: 2026-07-28+.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry