openapi: 3.1.0
info:
  title: Poké Berries Evolution API
  description: PokéAPI v2 is a free, open-source RESTful API serving comprehensive Pokémon data — species, abilities, moves, items, types, locations, evolution chains, encounters, berries, contests, games, and machines. All endpoints are GET-only and require no authentication. Please cache resources locally; rate limits were removed in 2018 but persistent abusers may be IP-banned.
  version: '2'
  contact:
    name: PokéAPI Maintainers
    url: https://pokeapi.co
  license:
    name: BSD-3-Clause
    url: https://github.com/PokeAPI/pokeapi/blob/master/LICENSE.md
servers:
- url: https://pokeapi.co/api/v2
  description: PokéAPI v2 production base URL
tags:
- name: Evolution
  description: Evolution chains and the triggers that drive them.
paths:
  /evolution-chain/{id}:
    get:
      tags:
      - Evolution
      summary: Get Evolution Chain
      description: Retrieve a single evolution chain by id.
      operationId: getEvolutionChain
      parameters:
      - $ref: '#/components/parameters/IntegerId'
      responses:
        '200':
          description: A single evolution chain resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EvolutionChain'
  /evolution-trigger:
    get:
      tags:
      - Evolution
      summary: List Evolution Triggers
      description: List all evolution triggers.
      operationId: listEvolutionTriggers
      parameters:
      - $ref: '#/components/parameters/Limit'
      - $ref: '#/components/parameters/Offset'
      responses:
        '200':
          description: A paginated list of evolution trigger resources.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NamedAPIResourceList'
  /evolution-trigger/{id}:
    get:
      tags:
      - Evolution
      summary: Get Evolution Trigger
      description: Retrieve a single evolution trigger by id or name.
      operationId: getEvolutionTrigger
      parameters:
      - $ref: '#/components/parameters/IdOrName'
      responses:
        '200':
          description: A single evolution trigger resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EvolutionTrigger'
components:
  parameters:
    IntegerId:
      name: id
      in: path
      required: true
      description: Resource id (integer only).
      schema:
        type: integer
    Offset:
      name: offset
      in: query
      required: false
      description: Number of items to skip before starting to collect the result set.
      schema:
        type: integer
        minimum: 0
        default: 0
    Limit:
      name: limit
      in: query
      required: false
      description: Number of items to return per page.
      schema:
        type: integer
        minimum: 1
        maximum: 100000
        default: 20
    IdOrName:
      name: id
      in: path
      required: true
      description: Resource id (integer) or name (slug).
      schema:
        type: string
  schemas:
    EvolutionChain:
      type: object
      properties:
        id:
          type: integer
        baby_trigger_item:
          $ref: '#/components/schemas/NamedAPIResource'
          nullable: true
        chain:
          $ref: '#/components/schemas/ChainLink'
    Name:
      type: object
      properties:
        name:
          type: string
        language:
          $ref: '#/components/schemas/NamedAPIResource'
    EvolutionTrigger:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        names:
          type: array
          items:
            $ref: '#/components/schemas/Name'
        pokemon_species:
          type: array
          items:
            $ref: '#/components/schemas/NamedAPIResource'
    NamedAPIResourceList:
      type: object
      properties:
        count:
          type: integer
        next:
          type: string
          nullable: true
          format: uri
        previous:
          type: string
          nullable: true
          format: uri
        results:
          type: array
          items:
            $ref: '#/components/schemas/NamedAPIResource'
    ChainLink:
      type: object
      properties:
        is_baby:
          type: boolean
        species:
          $ref: '#/components/schemas/NamedAPIResource'
        evolution_details:
          type: array
          items:
            type: object
        evolves_to:
          type: array
          items:
            $ref: '#/components/schemas/ChainLink'
    NamedAPIResource:
      type: object
      properties:
        name:
          type: string
          description: Slug name of the referenced resource.
        url:
          type: string
          format: uri
          description: Canonical URL of the referenced resource.