openapi: 3.2.0
info:
  title: Piknik.Spot Spend Challenge API
  description: Piknik.Spot API with OAuth2 authentication, Model Context Protocol (MCP) support, and Agent-to-Agent (A2A) capabilities for AI-powered local food system interactions.
  version: 1.0.0
  contact:
    name: Piknik.Spot API Support
    url: https://piknik.spot
    email: info@piknik.spot
  license:
    name: Proprietary
    url: https://piknik.spot/terms
servers:
- url: https://piknik.spot/api
  description: Production Server
- url: http://localhost:3000/api
  description: Development Server
tags:
- name: Spend Challenge
paths:
  /spend-challenge/associations/{id}/campaign:
    get:
      summary: GET /spend-challenge/associations/{id}/campaign
      description: Endpoint for /spend-challenge/associations/{id}/campaign
      tags:
      - Spend Challenge
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
        description: id identifier
      - name: slug
        in: query
        schema:
          type: string
        description: slug parameter
      operationId: getSpendChallengeAssociationsByIdCampaign
      x-operation-id-source: derived
  /spend-challenge/associations/{id}:
    get:
      summary: GET /spend-challenge/associations/{id}
      description: Endpoint for /spend-challenge/associations/{id}
      tags:
      - Spend Challenge
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
        description: id identifier
      operationId: getSpendChallengeAssociationsById
      x-operation-id-source: derived
  /spend-challenge/associations/{id}/share-card:
    get:
      summary: Fetch an image (remote URL or local file path) and return a base64 data URI
      tags:
      - Spend Challenge
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
        description: id identifier
      operationId: getSpendChallengeAssociationsByIdShareCard
      x-operation-id-source: derived
  /spend-challenge/log:
    post:
      summary: POST /spend-challenge/log
      description: Endpoint for /spend-challenge/log
      tags:
      - Spend Challenge
      responses:
        '201':
          description: Created successfully
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      operationId: postSpendChallengeLog
      x-operation-id-source: derived
  /spend-challenge/my-logs:
    get:
      summary: GET /spend-challenge/my-logs
      description: Endpoint for /spend-challenge/my-logs
      tags:
      - Spend Challenge
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      parameters:
      - name: anonymousId
        in: query
        schema:
          type: string
        description: anonymousId parameter
      operationId: getSpendChallengeMyLogs
      x-operation-id-source: derived
  /spend-challenge/nearby:
    get:
      summary: GET /spend-challenge/nearby
      description: Endpoint for /spend-challenge/nearby
      tags:
      - Spend Challenge
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      parameters:
      - name: lat
        in: query
        schema:
          type: number
          format: double
        description: Latitude coordinate
      - name: lng
        in: query
        schema:
          type: number
          format: double
        description: Longitude coordinate
      - name: radiusKm
        in: query
        schema:
          type: integer
        description: radiusKm parameter
      operationId: getSpendChallengeNearby
      x-operation-id-source: derived
  /spend-challenge/participant/{id}/impact:
    get:
      summary: GET /spend-challenge/participant/{id}/impact
      description: Endpoint for /spend-challenge/participant/{id}/impact
      tags:
      - Spend Challenge
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
        description: id identifier
      operationId: getSpendChallengeParticipantByIdImpact
      x-operation-id-source: derived
  /spend-challenge/rankings:
    get:
      summary: GET /spend-challenge/rankings
      description: Endpoint for /spend-challenge/rankings
      tags:
      - Spend Challenge
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security: []
      operationId: getSpendChallengeRankings
      x-operation-id-source: derived
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message
        error_description:
          type: string
          description: Detailed error description
  securitySchemes:
    cookieAuth:
      type: apiKey
      in: cookie
      name: next-auth.session-token
      description: Session-based authentication for web browsers
    oauth2:
      type: oauth2
      description: OAuth 2.0 authentication for external applications and AI agents
      flows:
        authorizationCode:
          authorizationUrl: https://piknik.spot/api/oauth/authorize
          tokenUrl: https://piknik.spot/api/oauth/token
          refreshUrl: https://piknik.spot/api/oauth/token
          scopes:
            marketplace:write: Create and manage marketplace listings
            events:write: Create and manage community events
            read:profile: Read user profile information
            write:profile: Update user profile information
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'OAuth2 access token (JWT). Include in Authorization header as: Bearer {token}'