Terminal 64 MCP server has 5 tools with basic descriptions but significant quality gaps. All tools have descriptions (10-100 chars), but most are generic and lack actionable context. Input schemas are present but minimal, most tools accept empty objects or single parameters with no validation constraints. No output schemas documented. Error handling is absent; tools provide no recovery guidance. Tool names follow verb_noun convention (get_*, emit_*) but descriptions don't explain WHEN to use each tool or what downstream operations require. No parameter validation, no pagination support, no idempotent guarantees. The server reads Terminal 64 widget state and emits events, a narrow, specialized domain, but the tool definitions don't reflect best practices for agent composition.

• Document output schemas for all tools. Example: get_sessions should return {sessions: [{id: string, name: string, workingDirectory: string, status: 'active'|'idle'}, ...], total: number}. This enables LLMs to extract session_id for downstream calls.
• Expand descriptions to 80-150 chars and include WHEN to use each tool. Example: 'Get all active Claude Code sessions with their IDs, names, and working directories. Call this first to list available sessions before fetching messages with get_session_messages.'
• Add constraints to get_session_messages: 'last' should have min=1, max=100, default=10. Include guidance: 'Returns recent messages in chronological order. Use to review session history or debug agent behavior.'
• Add error handling to emit_widget_event. Return structured errors like {error: 'invalid_event_type', message: 'event_type must be a non-empty string', valid_types: ['...'], suggestion: 'Check event_type spelling'}.
• Ensure field name consistency across tools. If get_sessions returns 'session_id', document this explicitly so LLMs know to pass it to get_session_messages. Consider adding a 'chaining' section to descriptions.