This gateway server exposes 7 tools for aggregating and routing calls to upstream MCP servers. Tool naming follows verb_noun convention (tools_list, tools_call, prompts_list, etc.), which is good. However, critical gaps emerge: (1) Input schemas are not visible in the provided source code for most tools, only tools_call and prompts_get show partial schema hints in the description. (2) Tool descriptions are present but generic and lack LLM-optimized detail (e.g., 'Lists all tools aggregated from upstream MCP servers, filtered by caller policy' does not explain WHEN to call this vs alternatives, what the output structure is, or how filtering works). (3) No output schemas are documented, agents cannot know what fields to expect from list operations or how to chain results. (4) Error handling is not visible, no guidance on what happens when an upstream server is unreachable, a tool call fails, or policy denies access. (5) Parameter descriptions are minimal (e.g., 'Namespaced tool name (serverId__toolName)' lacks format validation rules, length constraints, or examples of valid names). This is a functional gateway but lacks the polish needed for confident LLM integration.

• Document complete output schemas for all list tools. Example: tools_list should return {tools: [{name, description, inputSchema}], total_count, next_cursor}. This enables agents to extract tool names and chain to tools_call.
• Expand tool descriptions to 150 - 250 chars. For tools_list: 'Lists all tools available from connected upstream MCP servers, filtered by your access policy. Call this first to discover what tools are available before invoking tools_call. Returns tool names, descriptions, and input schemas.'
• Add explicit input schemas to the source code. For tools_call: {name: {type: string, pattern: '^[a-zA-Z0-9_]+__[a-zA-Z0-9_]+$', description: 'Namespaced tool name in format serverId__toolName. Example: weather__get_forecast'}, arguments: {type: object, description: 'Tool-specific arguments as a JSON object'}}.
• Document error responses with recovery guidance. Example: 'If tools_call returns "upstream server unreachable", retry after 5 seconds or call tools_list to verify the server is still connected.'
• Add pagination support to list tools. Include limit (default 20, max 100) and offset/cursor parameters. Return total_count so agents know if more results exist. This prevents context window exhaustion on large deployments.