This server exposes only 2 tools with extremely minimal documentation and schema. The server is a proxy that dynamically connects to other MCP servers via an external API (Metatool API), then aggregates their tools under a naming convention (server_name__tool_name). While the concept is interesting, the implementation has critical quality gaps: (1) Tool descriptions are bare-minimum, lacking WHEN to use, prerequisites, or state-modification warnings. (2) The 'call_tool' tool accepts an arbitrary 'arguments' object with no schema validation, type hints, or documentation of expected structure. (3) No error handling guidance, the code shows try-except blocks that catch exceptions silently, with no recovery hints for the LLM. (4) The 'list_tools' tool returns a dynamic list by fetching from an external API, but the response schema is undocumented. (5) Parameter 'name' in call_tool is a free-form string with no validation, enum, pattern, or length constraints. This violates the constrained-input pattern. The server relies entirely on downstream tools and does not itself implement the quality patterns needed for LLM-friendly composition.

• Expand list_tools description to ~100-150 chars: 'List all tools available from connected MCP servers. Call this first to discover what operations are available, then use call_tool to invoke them.'
• Expand call_tool description to explain the server_name__tool_name convention and give an example: 'Invoke a tool from a connected MCP server. Use the format server_name__tool_name (e.g., slack__send_message). The arguments object must match the target tool's input schema.'
• Add a pattern constraint to the 'name' parameter: use a regex pattern like '^[a-zA-Z0-9_-]+__[a-zA-Z0-9_-]+$' to enforce the naming convention and help LLMs format the name correctly.
• Document the output schema for list_tools: explicitly state that it returns an array of Tool objects, with fields like name (string), description (string), and inputSchema (JSON object). Optionally provide an example.
• Add error handling and recovery guidance: if call_tool fails (e.g., tool not found, invalid arguments), return a structured error message like: 'Tool "server_name__tool_name" not found. Available tools: [list alternatives]. Verify the server name and tool name match the output of list_tools().'
• Document the expected structure and meaning of the 'arguments' parameter: e.g., 'A JSON object with key-value pairs matching the target tool's input parameters. Required and optional fields depend on the specific tool, call list_tools to see each tool's schema.'
• Add a note about the Metatool API dependency: 'This server requires a Metatool API running at the METATOOL_API_BASE_URL environment variable and a valid METATOOL_API_KEY. If the API is unavailable, list_tools and call_tool will fail gracefully but return empty results or errors.'