This MCP server provides 5 tools with mixed definition quality. Tool naming is generally adequate (verb_noun pattern), but descriptions lack depth and LLM-optimization. Parameter schemas are present but sparse, many parameters have minimal or no descriptions. Output schemas are entirely undocumented, forcing LLMs to infer structure. Error handling is present but not recovery-guided. The server lacks modern MCP patterns like tool annotations, structured error guidance, and comprehensive parameter documentation.

• Document output schemas for every tool. Example: 'pokemon_data/list returns {"names": [string]}'. pokemon_data/get returns {"id": integer, "name": string, "type": [string], "hp": integer, "stats": {...}}. battle_simulation/run returns {"winner": string, "log": [{"message": string, "hp_bar": float}]}. This ensures LLMs know what to expect and can chain tools correctly.
• Expand tool descriptions to 50-200 characters and include decision hints. Example: 'Fetch data for a specific Pokémon (name, types, stats, HP) by name. Use pokemon_data/list first if you need available names. Returns 404 if not found, try list to verify the name is correct.'
• Add descriptions to all parameters. For pokemon1/pokemon2 in battle_simulation/run, add: 'Name of the Pokémon to battle. Must match a name from pokemon_data/list. Case-insensitive.'
• Add explicit validation constraints in the JSON Schema. For battle_simulation/team, use minItems: 3, maxItems: 3 on the team arrays. For pokemon names, consider a pattern constraint or enum (if the list is finite and small enough).
• Migrate tool names to verb_noun convention: list_pokemon_names, get_pokemon_data, run_battle, run_random_battle, run_team_battle. This aligns with production baseline and improves LLM name parsing.
• Implement recovery-guided error responses. When a Pokémon name is not found, return: '{"error": "Pokémon not found: xyz", "suggestion": "Call pokemon_data/list to see available names, or try a different spelling."}'. This guides the LLM to self-correct.