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pokeapi_get_pokemon
Read-onlyIdempotent

Get a fully denormalized Pokémon dossier in a single call — base stats, types, abilities (with full English effect text), height/weight, resolved evolution chain, sprite URLs including official artwork, species flavor text, variety list, capture rate, growth rate, gender rate, legendary/mythical flags, egg groups, and (optionally) a summarized learnable-move list. Accepts a name (lowercase, hyphens for spaces, e.g. "bulbasaur", "mr-mime") or PokéAPI Pokémon-record ID. A species name with no Pokémon record of its own (e.g. "deoxys") resolves to the default variety of that species ("deoxys-normal"), reported in resolvedFromSpecies. Set include_moves=true to include the move summary (large); defaults to false. Use game_version to select flavor text from a specific game (e.g. "sword", "red"); falls back to the most recent English entry when the version is not found. Use pokeapi_find_pokemon to discover Pokémon by type, generation, or egg group before calling this tool.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
identifierYesPokémon name (lowercase hyphenated, e.g. "bulbasaur", "charizard-mega-x") or PokéAPI Pokémon-record ID as a string (e.g. "1", "10034"). A species name (e.g. "deoxys") resolves to its default variety.
game_versionNoPokéAPI version name to filter flavor text (e.g. "sword", "red", "scarlet"). Falls back to the most recent English entry when the version is not found.
include_movesNoInclude the full learnable-move summary. Defaults to false because the list is large (100–200+ moves).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
idNoPokéAPI Pokémon-record ID. Form IDs are not National Pokédex numbers.
nameNoCanonical Pokémon name in hyphenated lowercase.
errorNoPresent when the call failed. Absent on success.
genusNoEnglish genus (e.g. "Seed Pokémon"). Null when unavailable.
movesNoLearnable moves (populated when include_moves=true, empty otherwise).
statsNoBase stats.
typesNoType names ordered by slot (e.g. ["fire", "flying"]).
spritesNoSprite URLs.
heightDmNoHeight in decimetres.
weightHgNoWeight in hectograms.
abilitiesNoAbilities with full effect text.
eggGroupsNoEgg group names.
moveCountNoTotal number of learnable moves regardless of include_moves.
varietiesNoAll forms and variants of this species.
genderRateNoGender ratio: -1 genderless, 0 always male, 8 always female, 1–7 fraction (eighths) female.
generationNoGeneration introduced (e.g. "generation-i").
growthRateNoGrowth rate name (e.g. "medium-slow").
isMythicalNoTrue for mythical Pokémon.
captureRateNoBase capture rate (0–255).
isLegendaryNoTrue for legendary Pokémon.
evolutionChainNoEvolution tree rooted at the base species.
speciesFlavorTextNoFlavor text from the selected (or most recent) game version. Null when none available.
resolvedFromSpeciesNoSpecies name the identifier matched when it named no Pokémon record; this dossier is the default variety of that species. Null when the identifier named a Pokémon record directly.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed11 schema fields changed
    • changedInput schema / properties / identifier / description
      Previous value: -"Pokémon name (lowercase hyphenated, e.g. \"bulbasaur\", \"mr-mime\") or Pokédex number as a string (e.g. \"1\", \"25\")."New value: +"Pokémon name (lowercase hyphenated, e.g. \"bulbasaur\", \"charizard-mega-x\") or PokéAPI Pokémon-record ID as a string (e.g. \"1\", \"10034\"). A species name (e.g. \"deoxys\") resolves to its default variety."
    • changedOutput schema / $defs / __schema0 / properties / condition / description
      Previous value: -"Human-readable summary of additional conditions (happiness, time of day, etc.)."New value: +"Compatibility summary of the first alternative; evolutionDetails contains the complete methods."
    • addedOutput schema / $defs / __schema0 / properties / evolutionDetails
      Added value: +{
      +  "description": "All alternative methods in upstream order; empty for a base stage. Requirements apply within each method, never across alternatives.",
      +  "items": {
      +    "additionalProperties": false,
      +    "description": "One complete alternative evolution method.",
      +    "properties": {
      +      "allowedNatures": {
      +        "anyOf": [
      +          {
      +            "items": {
      +              "type": "string"
      +            },
      +            "type": "array"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "description": "Allowed nature names. Empty lists are preserved; null when unspecified."
      +      },
      +      "conditionExpression": {
      +        "anyOf": [
      +          {
      +            "additionalProperties": false,
      +            "properties": {
      +              "expression": {
      +                "description": "Verbatim upstream RPN condition expression; not evaluated.",
      +                "type": "string"
      +              },
      +              "percentageChance": {
      +                "description": "Upstream chance percentage, including zero.",
      +                "type": "number"
      +              },
      +              "variables": {
      +                "description": "Names of expression variables in upstream order.",
      +                "items": {
      +                  "type": "string"
      +                },
      +                "type": "array"
      +              }
      +            },
      +            "required": [
      +              "expression",
      +              "percentageChance",
      +              "variables"
      +            ],
      +            "type": "object"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "description": "Variable-dependent condition supplied by PokéAPI. Null when unspecified."
      +      },
      +      "evolvedPokemonForm": {
      +        "description": "Resulting form. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "gender": {
      +        "description": "Required gender ID. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "heldItem": {
      +        "description": "Required held item. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "isDefault": {
      +        "description": "Whether this is the expected main-series evolution for its variety. Null when unspecified.",
      +        "type": [
      +          "boolean",
      +          "null"
      +        ]
      +      },
      +      "item": {
      +        "description": "Item used for evolution. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "knownMove": {
      +        "description": "Required known move. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "knownMoveType": {
      +        "description": "Type of a required known move. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "location": {
      +        "description": "Required location. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "minAffection": {
      +        "description": "Minimum affection. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "minBeauty": {
      +        "description": "Minimum beauty. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "minDamageTaken": {
      +        "description": "Minimum damage taken. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "minHappiness": {
      +        "description": "Minimum happiness. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "minLevel": {
      +        "description": "Minimum level. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "minMoveCount": {
      +        "description": "Minimum move uses. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "minSteps": {
      +        "description": "Minimum steps. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "nearSpecialRock": {
      +        "description": "Whether proximity to a Moss Rock or Icy Rock is required. Null when unspecified.",
      +        "type": [
      +          "boolean",
      +          "null"
      +        ]
      +      },
      +      "needsMultiplayer": {
      +        "description": "Whether multiplayer link play is required. Null when unspecified.",
      +        "type": [
      +          "boolean",
      +          "null"
      +        ]
      +      },
      +      "needsOverworldRain": {
      +        "description": "Whether overworld rain is required. Null when unspecified.",
      +        "type": [
      +          "boolean",
      +          "null"
      +        ]
      +      },
      +      "partySpecies": {
      +        "description": "Species required in the party. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "partyType": {
      +        "description": "Type required in the party. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "region": {
      +        "description": "Required region. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "relativePhysicalStats": {
      +        "description": "Required Attack relative to Defense: 1 greater, 0 equal, -1 less. Null when unspecified.",
      +        "type": [
      +          "number",
      +          "null"
      +        ]
      +      },
      +      "requiredPokemonForm": {
      +        "description": "Required starting form. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "timeOfDay": {
      +        "description": "Required time of day. Empty string is preserved; null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "tradeSpecies": {
      +        "description": "Species to trade for. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "trigger": {
      +        "description": "Event that triggers this alternative.",
      +        "type": "string"
      +      },
      +      "turnUpsideDown": {
      +        "description": "Whether the device must be upside down. Null when unspecified.",
      +        "type": [
      +          "boolean",
      +          "null"
      +        ]
      +      },
      +      "usedMove": {
      +        "description": "Move that must be used. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "versionGroup": {
      +        "description": "Version group that introduced this method. Null when unspecified.",
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      }
      +    },
      +    "required": [
      +      "versionGroup",
      +      "isDefault",
      +      "requiredPokemonForm",
      +      "evolvedPokemonForm",
      +      "trigger",
      +      "item",
      +      "gender",
      +      "heldItem",
      +      "knownMove",
      +      "knownMoveType",
      +      "location",
      +      "minLevel",
      +      "minHappiness",
      +      "minBeauty",
      +      "minAffection",
      +      "nearSpecialRock",
      +      "needsMultiplayer",
      +      "needsOverworldRain",
      +      "partySpecies",
      +      "partyType",
      +      "relativePhysicalStats",
      +      "timeOfDay",
      +      "tradeSpecies",
      +      "turnUpsideDown",
      +      "region",
      +      "usedMove",
      +      "minMoveCount",
      +      "minSteps",
      +      "minDamageTaken",
      +      "allowedNatures",
      +      "conditionExpression"
      +    ],
      +    "type": "object"
      +  },
      +  "type": "array"
      +}
    • changedOutput schema / $defs / __schema0 / properties / item / description
      Previous value: -"Item used in evolution. Null if not applicable."New value: +"First alternative evolution item. Null when unspecified."
    • changedOutput schema / $defs / __schema0 / properties / minLevel / description
      Previous value: -"Minimum level required. Null if not applicable."New value: +"First alternative minimum level. Null when unspecified."
    • changedOutput schema / $defs / __schema0 / properties / trigger / description
      Previous value: -"Evolution trigger (level-up, use-item, trade, shed, base)."New value: +"First alternative trigger, or base for the root stage."
    • changedOutput schema / $defs / __schema0 / required
      Previous value: -[
      -  "species",
      -  "trigger",
      -  "minLevel",
      -  "item",
      -  "condition",
      -  "evolvesTo"
      -]New value: +[
      +  "species",
      +  "trigger",
      +  "minLevel",
      +  "item",
      +  "condition",
      +  "evolutionDetails",
      +  "evolvesTo"
      +]
    • changedOutput schema / anyOf
      Previous value: -[
      -  {
      -    "not": {
      -      "required": [
      -        "error"
      -      ]
      -    },
      -    "required": [
      -      "id",
      -      "name",
      -      "heightDm",
      -      "weightHg",
      -      "types",
      -      "stats",
      -      "abilities",
      -      "sprites",
      -      "moves",
      -      "moveCount",
      -      "speciesFlavorText",
      -      "genus",
      -      "captureRate",
      -      "growthRate",
      -      "genderRate",
      -      "isLegendary",
      -      "isMythical",
      -      "evolutionChain",
      -      "varieties",
      -      "generation",
      -      "eggGroups"
      -    ]
      -  },
      -  {
      -    "required": [
      -      "error"
      -    ]
      -  }
      -]New value: +[
      +  {
      +    "not": {
      +      "required": [
      +        "error"
      +      ]
      +    },
      +    "required": [
      +      "id",
      +      "name",
      +      "resolvedFromSpecies",
      +      "heightDm",
      +      "weightHg",
      +      "types",
      +      "stats",
      +      "abilities",
      +      "sprites",
      +      "moves",
      +      "moveCount",
      +      "speciesFlavorText",
      +      "genus",
      +      "captureRate",
      +      "growthRate",
      +      "genderRate",
      +      "isLegendary",
      +      "isMythical",
      +      "evolutionChain",
      +      "varieties",
      +      "generation",
      +      "eggGroups"
      +    ]
      +  },
      +  {
      +    "required": [
      +      "error"
      +    ]
      +  }
      +]
    • changedOutput schema / properties / error / properties / data / properties / reason / description
      Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: The identifier resolves to no PokéAPI entry (HTTP 404). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: The identifier matches no Pokémon record and no species. Other values are possible when a failure originates below the handler."
    • changedOutput schema / properties / id / description
      Previous value: -"National Pokédex number."New value: +"PokéAPI Pokémon-record ID. Form IDs are not National Pokédex numbers."
    • addedOutput schema / properties / resolvedFromSpecies
      Added value: +{
      +  "description": "Species name the identifier matched when it named no Pokémon record; this dossier is the default variety of that species. Null when the identifier named a Pokémon record directly.",
      +  "type": [
      +    "string",
      +    "null"
      +  ]
      +}
  2. Changed20 schema fields changed
    • removedOutput schema / $defs / __schema0 / properties / condition / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / $defs / __schema0 / properties / condition / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / $defs / __schema0 / properties / item / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / $defs / __schema0 / properties / item / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / $defs / __schema0 / properties / minLevel / anyOf
      Removed value: -[
      -  {
      -    "type": "number"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / $defs / __schema0 / properties / minLevel / type
      Added value: +[
      +  "number",
      +  "null"
      +]
    • removedOutput schema / properties / abilities / items / properties / effectText / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / abilities / items / properties / effectText / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / abilities / items / properties / shortEffectText / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / abilities / items / properties / shortEffectText / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / genus / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / genus / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / speciesFlavorText / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / speciesFlavorText / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / sprites / properties / frontDefault / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / sprites / properties / frontDefault / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / sprites / properties / frontShiny / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / sprites / properties / frontShiny / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / sprites / properties / officialArtwork / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / sprites / properties / officialArtwork / type
      Added value: +[
      +  "string",
      +  "null"
      +]
  3. Changed9 schema fields changed
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
    • addedInput schema / additionalProperties
      Added value: +false
    • addedOutput schema / $defs
      Added value: +{
      +  "__schema0": {
      +    "additionalProperties": false,
      +    "properties": {
      +      "condition": {
      +        "anyOf": [
      +          {
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "description": "Human-readable summary of additional conditions (happiness, time of day, etc.)."
      +      },
      +      "evolvesTo": {
      +        "description": "Further evolutions from this stage.",
      +        "items": {
      +          "$ref": "#/$defs/__schema0"
      +        },
      +        "type": "array"
      +      },
      +      "item": {
      +        "anyOf": [
      +          {
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "description": "Item used in evolution. Null if not applicable."
      +      },
      +      "minLevel": {
      +        "anyOf": [
      +          {
      +            "type": "number"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "description": "Minimum level required. Null if not applicable."
      +      },
      +      "species": {
      +        "description": "Species name.",
      +        "type": "string"
      +      },
      +      "trigger": {
      +        "description": "Evolution trigger (level-up, use-item, trade, shed, base).",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "species",
      +      "trigger",
      +      "minLevel",
      +      "item",
      +      "condition",
      +      "evolvesTo"
      +    ],
      +    "type": "object"
      +  }
      +}
    • changedOutput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
    • addedOutput schema / anyOf
      Added value: +[
      +  {
      +    "not": {
      +      "required": [
      +        "error"
      +      ]
      +    },
      +    "required": [
      +      "id",
      +      "name",
      +      "heightDm",
      +      "weightHg",
      +      "types",
      +      "stats",
      +      "abilities",
      +      "sprites",
      +      "moves",
      +      "moveCount",
      +      "speciesFlavorText",
      +      "genus",
      +      "captureRate",
      +      "growthRate",
      +      "genderRate",
      +      "isLegendary",
      +      "isMythical",
      +      "evolutionChain",
      +      "varieties",
      +      "generation",
      +      "eggGroups"
      +    ]
      +  },
      +  {
      +    "required": [
      +      "error"
      +    ]
      +  }
      +]
    • removedOutput schema / definitions
      Removed value: -{
      -  "__schema0": {
      -    "additionalProperties": false,
      -    "properties": {
      -      "condition": {
      -        "anyOf": [
      -          {
      -            "type": "string"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ],
      -        "description": "Human-readable summary of additional conditions (happiness, time of day, etc.)."
      -      },
      -      "evolvesTo": {
      -        "description": "Further evolutions from this stage.",
      -        "items": {
      -          "$ref": "#/definitions/__schema0"
      -        },
      -        "type": "array"
      -      },
      -      "item": {
      -        "anyOf": [
      -          {
      -            "type": "string"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ],
      -        "description": "Item used in evolution. Null if not applicable."
      -      },
      -      "minLevel": {
      -        "anyOf": [
      -          {
      -            "type": "number"
      -          },
      -          {
      -            "type": "null"
      -          }
      -        ],
      -        "description": "Minimum level required. Null if not applicable."
      -      },
      -      "species": {
      -        "description": "Species name.",
      -        "type": "string"
      -      },
      -      "trigger": {
      -        "description": "Evolution trigger (level-up, use-item, trade, shed, base).",
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "species",
      -      "trigger",
      -      "minLevel",
      -      "item",
      -      "condition",
      -      "evolvesTo"
      -    ],
      -    "type": "object"
      -  }
      -}
    • addedOutput schema / properties / error
      Added value: +{
      +  "additionalProperties": {},
      +  "description": "Present when the call failed. Absent on success.",
      +  "properties": {
      +    "code": {
      +      "description": "JSON-RPC error code for this failure.",
      +      "maximum": 9007199254740991,
      +      "minimum": -9007199254740991,
      +      "type": "integer"
      +    },
      +    "data": {
      +      "additionalProperties": {},
      +      "properties": {
      +        "reason": {
      +          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: The identifier resolves to no PokéAPI entry (HTTP 404). Other values are possible when a failure originates below the handler.",
      +          "examples": [
      +            "not_found"
      +          ],
      +          "type": "string"
      +        },
      +        "recovery": {
      +          "additionalProperties": {},
      +          "description": "Actionable next step for the caller.",
      +          "properties": {
      +            "hint": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "hint"
      +          ],
      +          "type": "object"
      +        },
      +        "retryable": {
      +          "description": "Whether retrying may succeed.",
      +          "type": "boolean"
      +        }
      +      },
      +      "type": "object"
      +    },
      +    "message": {
      +      "description": "Human-readable description of what went wrong.",
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "code",
      +    "message"
      +  ],
      +  "type": "object"
      +}
    • changedOutput schema / properties / evolutionChain / anyOf
      Previous value: -[
      -  {
      -    "$ref": "#/definitions/__schema0"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "$ref": "#/$defs/__schema0"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • removedOutput schema / required
      Removed value: -[
      -  "id",
      -  "name",
      -  "heightDm",
      -  "weightHg",
      -  "types",
      -  "stats",
      -  "abilities",
      -  "sprites",
      -  "moves",
      -  "moveCount",
      -  "speciesFlavorText",
      -  "genus",
      -  "captureRate",
      -  "growthRate",
      -  "genderRate",
      -  "isLegendary",
      -  "isMythical",
      -  "evolutionChain",
      -  "varieties",
      -  "generation",
      -  "eggGroups"
      -]
  4. First observed

TDQS

A4.8/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover safety (readOnlyHint, idempotentHint, openWorldHint), and the description adds genuinely non-obvious behavior: species-name resolution to a default variety reported in resolvedFromSpecies, and graceful fallback to the most recent English flavor text when game_version is not found. It also warns that include_moves produces a large response, which is real cost information an agent needs before invoking.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The dossier inventory is front-loaded and the operational notes follow in logical order, so scanning yields the key facts quickly. It is somewhat long, and the long field list partially duplicates what the output schema already conveys, but no sentence is pure filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, the description need not document return values, yet it still summarizes them for selection purposes. Combined with the identifier-resolution edge case, the game_version fallback, and the alternative-tool pointer, an agent has everything needed to call this correctly on the first try.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3, but the description adds concrete examples ("bulbasaur", "mr-mime", "deoxys") and the resolution semantics that the schema states only tersely, plus the size rationale behind include_moves. The additions are real but partly echo the schema's own parameter text, so it lands just above baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description names a specific verb and resource ("Get a fully denormalized Pokémon dossier") and enumerates the exact payload, so it is unmistakably distinct from siblings like pokeapi_get_ability or pokeapi_get_move. It even names pokeapi_find_pokemon as the discovery counterpart, letting an agent separate the two without opening a schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It states when to use this tool versus the alternative ("Use pokeapi_find_pokemon to discover Pokémon by type, generation, or egg group before calling this tool") and gives per-parameter guidance for include_moves (default false, list is large) and game_version (select a game's flavor text). Explicit when-to-use and when-to-set-option coverage with no inference required.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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