The Discord Cloud MCP has adequate tool definitions with mostly complete schemas and descriptions, but exhibits several patterns that fall short of production quality. All 9 tools are explicitly registered with names, descriptions, and Zod schemas. Tool naming follows verb_noun convention (list, get, read, send, delete, search, add, remove), which is appropriate. Descriptions are present and contextually relevant (avg ~80 chars), though several lack actionable recovery guidance. Parameters are generally well-typed (using Zod), but descriptions are sparse (avg ~50 chars per param). Output is uniformly returned as JSON text wrapped in MCP TextContent, avoiding the need for complex response parsing. However, error handling is minimal, most failures return raw Discord API errors without guidance on next steps. No tool annotations (readOnlyHint/destructiveHint) are declared despite clear risk classifications in the spec. Response schemas are not formally documented for downstream tool composition. The discord_add_multiple_reactions tool exhibits 'and' naming anti-pattern but is forgivable given functional necessity.

• Add tool annotations to all 9 tools. Use @discord_list_servers.readOnlyHint() and similar to declare impact. This enables MCP clients to surface risk and prevent accidental misuse.
• Enhance error handling with structured recovery guidance. Instead of returning raw Discord errors, wrap them with actionable next steps: 'Invalid channel ID. Call discord_list_servers() to see available channels.' Reference pattern:recovery-guide.
• Document output schemas explicitly. For each tool, add a 'Returns' section describing field names, types, and semantics (e.g., 'Returns: { guilds: [{ id: string, name: string, icon?: string }], total_count: number }').
• Expand parameter descriptions for emoji fields. Clarify valid formats (Unicode, custom emoji format :emoji_name:emoji_id, etc.) and constraints (max length, character restrictions).
• Add pagination to discord_list_servers. Accept optional 'before' and 'after' cursor parameters (Discord API supports these) or 'limit' parameter, and return next_cursor in the response for pagination.
• Implement confirmation pattern for discord_delete_message. Add an optional 'confirm' boolean parameter that defaults to false. If false, return a summary of what would be deleted and ask the LLM to call again with confirm=true. This prevents accidental data loss.
• Consider renaming discord_add_multiple_reactions to discord_add_reactions to avoid 'and' naming. If batch is a distinct concern, clarify in the description that this adds multiple reactions in a single operation (more efficient than N separate add_reaction calls).