This MCP server exposes 4 tools with basic schemas and minimal descriptions. All tools have names and explicit input schemas with typed parameters, but descriptions are trivially short (15-28 characters), parameter descriptions are completely absent, output schemas are undocumented, and error handling is generic. The tool definitions are directly visible in src/index.ts via server.setRequestHandler(ListToolsRequestSchema), so inference penalties do not apply. However, the lack of parameter-level documentation, missing output schema documentation, and generic error messages create significant usability gaps for LLM-based agents. Average tool score: 42 (naming 65, description 25, schema 35).

• Add descriptions to all parameters. Example: 'row: {type: "number", description: "Row index (0-indexed, valid range 0-7 for standard 8x8 board) of the cell to interact with. Required."}' and similarly for col. Reference the Minesweeper board size in the description.
• Expand tool descriptions to 80-150 characters with context: 'start_game: Initialize a new 8x8 Minesweeper game with 10 mines. Returns board state and game metadata. Call this before click/flag/unflag.' Similar pattern for click, flag, unflag (e.g., 'click: Reveal a cell on the board. Returns updated board state and win/loss/continue status.').
• Document output schema for each tool. Example: 'Returns {type: "object", properties: {board: [...], gameStatus: "playing|won|lost", flagsRemaining: number}, ...}' so agents understand the response structure.
• Add per-parameter constraints. For row/col, add 'minimum: 0, maximum: 7' (or appropriate board size) in the JSON schema and reiterate in the description: '0-indexed position, must be between 0 and 7 inclusive.'
• Improve error messages with actionable guidance. Instead of 'Game server failed', return 'Game server unreachable. Verify the server is running on localhost:5000. Call start_game to initialize if not done yet.' Similarly, 'Cell out of bounds' should suggest valid ranges.
• Document game flow and state transitions in tool descriptions. Clarify that start_game must be called before click/flag/unflag, and that the board response includes a game status field (playing, won, lost) so agents know when to stop.