This server has 30 tools with generally present input schemas and descriptions, but significant quality gaps prevent a higher score. Most tool descriptions are brief and lack strategic context (e.g., 'Send a plain text message' vs 'Send a plain text message to a WhatsApp contact or group, requires active connection from connect_evolution_instance'). Parameter descriptions are minimal and lack constraints, types, or validation guidance. No output schemas are documented in the source, only input. Error handling is minimal, no recovery guidance, no classification of error types, and no actionable messages visible. The tool set is well-named with consistent verb_noun patterns (send_*, get_*, fetch_*, find_*), which is a strength. However, composition issues exist: tools like send_plain_text, send_media, send_audio, send_sticker, send_location, send_contact are highly repetitive and could benefit from a unified send_message tool accepting a content_type parameter and payload. Several tools (e.g., fetch_evolution_instances, find_chats, find_contacts) accept optional 'where' or similar filter objects with inline documentation but no formal schema definition visible. Tool annotations (readOnlyHint, destructiveHint, idempotentHint) are manually tracked in the provided risk field but not implemented in the code visible here.

• Add formal output schema documentation to every tool. For example, get_evolution_info should document: {status: string, version: string, uptime: number}. This enables LLMs to anticipate response structure and plan follow-up calls.
• Convert inline examples in parameter descriptions to formal enum constraints. For set_evolution_presence, define presence as enum: ['available', 'unavailable', 'typing']. For set_evolution_webhook/events, define the allowed event types as an enum array.
• Refactor the 9 send_* tools into a single send_message tool with a content_type enum (text, media, audio, sticker, location, contact, reaction, poll, list, buttons) and a payload parameter of type object. This reduces tool sprawl and improves LLM reasoning.
• Add dependency documentation to every tool description. E.g., 'Requires: instance created with create_evolution_instance and connected with connect_evolution_instance. If not yet connected, call connect_evolution_instance(instanceName, phoneNumber) first.'
• Enhance error messages with recovery guidance. E.g., instead of returning {error: 'Instance not found'}, return {error: 'Instance not found', suggestion: 'Available instances: [list], or create a new one with create_evolution_instance'}.
• Define the schema for filter/settings object parameters explicitly. For find_chats where parameter, document: {id?: string, name?: string, archived?: boolean}. For set_evolution_settings, document all allowed properties.
• Add pagination support to list-returning tools (fetch_all_groups, find_chats, find_contacts). Return {items: [...], total: number, limit: number, offset: number}. Add limit and offset parameters.