PlayVideo MCP has 14 well-named tools with consistent verb_noun patterns (list_, create_, delete_, get_, update_). All tools have descriptions (avg ~80 chars, within baseline 34-392). Input schemas are present and properly typed with enums for constrained fields (status, events). However, output schemas are completely undocumented, LLMs cannot predict response structure for chaining. Parameter descriptions are minimal (often 1-2 sentences). Error handling is absent from visible code. No tool annotations (readOnlyHint, destructiveHint) despite clear risk levels. Destructive operations (delete_collection, delete_video, delete_webhook) lack confirmation patterns. Security: API key properly injected via env var, not exposed as parameter.

• Document output schemas for all tools. For get_video, specify: {id: string, filename: string, status: enum, duration?: number, playlistUrl?: string, thumbnailUrl?: string, collection?: {slug, name}}. This enables LLMs to chain tools correctly.
• Add tool annotations to all tools. Mark list_* and get_* with readOnlyHint=true. Mark delete_* with destructiveHint=true. Mark idempotent operations with idempotentHint=true. This signals risk to agents without parsing descriptions.
• Implement confirmation pattern for destructive operations. Add optional 'confirm' boolean parameter to delete_* tools. If false/absent, return {status: 'confirmation_required', message: 'This will permanently delete X. Pass confirm=true to proceed.'}. Prevents accidental destruction.
• Add structured error handling. Catch API errors and return {error: string, code: string, retryable: boolean, suggestion: string}. E.g., 'Collection not found. Try list_collections() to see available collections.' This guides agent recovery.
• Enhance parameter descriptions with explicit constraints. E.g., 'name: string, 1-100 characters, alphanumeric + spaces/hyphens only' and 'limit: number, 1-100 (default 20)'. Include validation rules so LLMs can self-correct before calling.