Vivijure Studio MCP provides 7 read-only tools with clear naming (verb_noun pattern: studio_modules, list_cast, get_cast, etc.) and detailed descriptions (avg ~180 chars). All tools have input schemas with proper JSON Schema structure. However, parameter descriptions are sparse or missing entirely, most tools accept empty objects with no documented constraints. Output schemas are not documented, forcing LLMs to infer response structure. Error handling is minimal; no recovery guidance or actionable error messages visible. The codebase shows thoughtful design (stateless, forward-compatible, raw body handling for uploads) but lacks LLM-optimized parameter documentation and output schema contracts.

• Document output schemas for all 7 tools. Include field names, types, and nested structure. Example: 'studio_modules returns {modules: [{name, config_schema, hooks}], hooks: {name, description}, quality_tiers: [string], default_tier: string}'.
• Add parameter descriptions to list_* tools. Specify pagination support (limit, offset, cursor), result count limits, and filtering options. Example: 'limit (1-100, default 20): Maximum cast members to return. offset (default 0): Pagination offset.'
• Enhance get_cast and get_project parameter descriptions with format guidance. Example: 'id (string, 1-64 chars, alphanumeric + dash): Cast member public identifier. Call list_cast() first if you only have a name.'
• Add error handling guidance to tool descriptions. Example: 'If cast member not found, returns 404. Call list_cast() to verify the ID exists, or search by name if available.'
• Consider adding optional filter/search parameters to list_cast and list_projects (e.g., name_filter, status_filter) to reduce result size and improve agent efficiency.