The MCP Client Host Java server provides 13 tools with basic schemas and descriptions, but suffers from significant quality gaps. Tool names follow decent verb_noun conventions (callTool, getServerTools, addOrUpdateServer, deleteServer, reconnectServer, shutdownServer), and all have descriptions present. However, descriptions are often vague (e.g., 'Invoke a specified tool on a designated server with provided arguments' for callTool lacks context on when to use it vs alternatives). Most tools lack detailed parameter constraints, for example, addOrUpdateServer accepts a 'type' enum (STDIO, SSE, STREAMABLEHTTP) which is good, but other fields like 'timeout' lack min/max bounds. Output schemas are not documented for any tool, forcing LLMs to guess what fields are returned. Error handling guidance is absent, tools offer no recovery hints or actionable next steps. The tools themselves are management/discovery oriented rather than domain-specific, which is appropriate for an MCP client host, but the definition quality remains mediocre by production standards. Baselines: rubric expects 50-200 char descriptions (most here are 60-120, within range); 100% of A+ tools have docstrings (met here); 100% of A+ tools have fully described params (NOT met, only 60% of params have descriptions).

• Document the output schema for every tool. For listServers, specify: 'Returns { servers: [ { id, name, type, status, lastHeartbeat, responseTimeMs }, ... ], count }'. For callTool, specify: 'Returns { success, result, errorMessage? }'. This enables LLMs to extract chaining IDs and plan multi-step operations.
• Resolve the duplicate getServerTools tools. Merge them into one tool that accepts either 'serverName' OR 'serverId' (with clear parameter descriptions stating the alternatives), or rename to getServerToolsByName and getServerToolsById to make the distinction obvious to LLMs.
• Add min/max constraints and units to all numeric parameters. E.g., 'timeout: number of seconds to wait for a response (1-300, default 30)'. For 'limit' or 'pageSize' parameters, specify the acceptable range (e.g., 1-100).
• Expand parameter descriptions to include dependency hints and constraints. E.g., for callTool: 'arguments: object with key-value pairs matching the target tool's input schema. Use getServerTools first to discover required and optional parameters for the tool you want to invoke.'
• Add error recovery guidance to tool descriptions. E.g., deleteServer: 'Removes the server configuration. If the server is still online, reconnectServer will fail until you add the configuration again. To safely remove without data loss, call shutdownServer first, then deleteServer. Returns an error if the server is referenced by active connections.'
• Clarify tool selection by distinguishing overlapping tools in their descriptions. Explain when to use getAllServerHealth (for monitoring/diagnostics) vs listServers (for configuration review) vs getConnectionStats (for performance tuning). Add a note like 'Use this for real-time health status; use listServers to review configuration details.'

Inferred effective spec: 2025-06-18+.

• Current-spec patterns present: structured tool output