openapi: 3.2.0
info:
  title: Wundership MPP App Planning API
  version: '2026-07-15'
  description: Public OpenAPI surface for Wundership machine-paid agent requests. Unpaid requests return HTTP 402 Payment Required.
  guidance: Use POST /v1/plan with a JSON body containing a prompt or idea to buy a structured Wundership software plan. Discovery endpoints are public. Paid operations declare x-payment-info and return HTTP 402 Payment Required until payment is authorized. After payment, retry the same request with the payment authorization or verified proxy headers described by the payment challenge.
  x-guidance: Use POST /v1/plan with a JSON body containing a prompt or idea to buy a structured Wundership software plan. Discovery endpoints are public. Paid operations declare x-payment-info and return HTTP 402 Payment Required until payment is authorized. After payment, retry the same request with the payment authorization or verified proxy headers described by the payment challenge.
  contact:
    email: hello@wundercorp.co
    url: https://wundercorp.co
    name: WunderCorp, Inc.
servers:
- url: https://mpp.openmodel.sh
tags:
- description: Software planning and implementation direction for agent callers.
  name: App Planning
paths:
  /v1/plan:
    post:
      tags:
      - App Planning
      summary: Wundership app plan
      description: Generate a structured software plan, product outline, feature map, and implementation-ready app direction. This is a paid machine-payment endpoint. Unpaid calls return HTTP 402 Payment Required with machine-payment metadata. Retry the same request after payment authorization.
      operationId: postWundershipPlan
      requestBody:
        content:
          application/json:
            schema:
              type: object
              additionalProperties: false
              required:
              - prompt
              properties:
                project_name:
                  description: Optional project or product name.
                  type: string
                prompt:
                  description: Software idea, product request, or agent task to turn into an implementation-ready plan.
                  type: string
                preferred_stack:
                  description: Preferred technical stack, framework, language, or deployment target.
                  type: string
                target_customer:
                  description: Who the app or software plan is for.
                  type: string
                output_format:
                  description: Requested output style, such as implementation_plan, product_outline, or feature_map.
                  type: string
                constraints:
                  description: Hard requirements, limits, or product constraints.
                  items:
                    type: string
                  type: array
            examples:
              softwarePlan:
                value:
                  project_name: Agent Market
                  prompt: Build a marketplace for AI agents that can buy and sell paid API calls.
                  preferred_stack: Next.js, Spring Boot, PostgreSQL, Stripe
                  target_customer: Founders, AI builders, and autonomous agents
                  output_format: implementation_plan
                  constraints:
                  - Use a machine-payment endpoint
                  - Return clear implementation phases
                summary: Generate an implementation-ready app plan
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                type: object
                required:
                - ok
                - provider
                - productKey
                - paymentVerified
                - result
                properties:
                  generatedAt:
                    format: date-time
                    type: string
                  provider:
                    example: wundership
                    type: string
                  productKey:
                    example: wundership_plan
                    type: string
                  paymentVerified:
                    type: boolean
                  result:
                    type: object
                    additionalProperties: true
                    properties:
                      productBrief:
                        type: string
                      buildPhases:
                        items:
                          type: string
                        type: array
                      recommendedNextPaidCall:
                        additionalProperties: true
                        type: object
                      risks:
                        items:
                          type: string
                        type: array
                      architecture:
                        items:
                          type: string
                        type: array
                  ok:
                    type: boolean
                  productName:
                    example: Wundership app plan
                    type: string
                  receipt:
                    type: string
          description: Paid request completed
        '402':
          headers:
            WWW-Authenticate:
              schema:
                type: string
              description: Machine-payment challenge header when a compatible payment rail is active.
            X-Wundership-Agent-Price:
              schema:
                type: string
              description: Human-readable price for the paid endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentRequired'
          description: Payment required
        '502':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Paid forwarding failed
      x-agent-price:
        minorUnits: 100
        display: '1.00'
        currency: USD
      x-machine-payment-protocols:
      - mpp
      x-machine-payment-rails:
      - key: stripe_spt
        method: stripe
        intent: charge
        networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
        paymentMethodTypes:
        - card
        - link
        description: Stripe Shared Payment Token rail for card and Link machine payments.
      x-payment-info:
        price:
          amount: '1.000000'
          mode: fixed
          currency: USD
        pricingMode: fixed
        currency: USD
        amount: '1.000000'
        unit: request
        protocols:
        - mpp:
            method: stripe
            intent: charge
            currency: USD
            networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
            paymentMethodTypes:
            - card
            - link
        offers:
        - method: stripe
          intent: charge
          amount: '100'
          currency: usd
          networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
          paymentMethodTypes:
          - card
          - link
  /mpp/plan:
    post:
      tags:
      - App Planning
      summary: Wundership app plan
      description: Generate a structured software plan, product outline, feature map, and implementation-ready app direction. This path is deprecated. Use https://mpp.openmodel.sh/v1/plan instead.
      operationId: postMppPlan
      requestBody:
        content:
          application/json:
            schema:
              type: object
              additionalProperties: false
              required:
              - prompt
              properties:
                project_name:
                  description: Optional project or product name.
                  type: string
                prompt:
                  description: Software idea, product request, or agent task to turn into an implementation-ready plan.
                  type: string
                preferred_stack:
                  description: Preferred technical stack, framework, language, or deployment target.
                  type: string
                target_customer:
                  description: Who the app or software plan is for.
                  type: string
                output_format:
                  description: Requested output style, such as implementation_plan, product_outline, or feature_map.
                  type: string
                constraints:
                  description: Hard requirements, limits, or product constraints.
                  items:
                    type: string
                  type: array
            examples:
              softwarePlan:
                value:
                  project_name: Agent Market
                  prompt: Build a marketplace for AI agents that can buy and sell paid API calls.
                  preferred_stack: Next.js, Spring Boot, PostgreSQL, Stripe
                  target_customer: Founders, AI builders, and autonomous agents
                  output_format: implementation_plan
                  constraints:
                  - Use a machine-payment endpoint
                  - Return clear implementation phases
                summary: Generate an implementation-ready app plan
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                type: object
                required:
                - ok
                - provider
                - productKey
                - paymentVerified
                - result
                properties:
                  generatedAt:
                    format: date-time
                    type: string
                  provider:
                    example: wundership
                    type: string
                  productKey:
                    example: wundership_plan
                    type: string
                  paymentVerified:
                    type: boolean
                  result:
                    type: object
                    additionalProperties: true
                    properties:
                      productBrief:
                        type: string
                      buildPhases:
                        items:
                          type: string
                        type: array
                      recommendedNextPaidCall:
                        additionalProperties: true
                        type: object
                      risks:
                        items:
                          type: string
                        type: array
                      architecture:
                        items:
                          type: string
                        type: array
                  ok:
                    type: boolean
                  productName:
                    example: Wundership app plan
                    type: string
                  receipt:
                    type: string
          description: Paid request completed
        '402':
          headers:
            WWW-Authenticate:
              schema:
                type: string
              description: Machine-payment challenge header when a compatible payment rail is active.
            X-Wundership-Agent-Price:
              schema:
                type: string
              description: Human-readable price for the paid endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentRequired'
          description: Payment required
        '502':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Paid forwarding failed
      x-agent-price:
        minorUnits: 100
        display: '1.00'
        currency: USD
      x-machine-payment-protocols:
      - mpp
      x-machine-payment-rails:
      - key: stripe_spt
        method: stripe
        intent: charge
        networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
        paymentMethodTypes:
        - card
        - link
        description: Stripe Shared Payment Token rail for card and Link machine payments.
      x-payment-info:
        price:
          amount: '1.000000'
          mode: fixed
          currency: USD
        pricingMode: fixed
        currency: USD
        amount: '1.000000'
        unit: request
        protocols:
        - mpp:
            method: stripe
            intent: charge
            currency: USD
            networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
            paymentMethodTypes:
            - card
            - link
        offers:
        - method: stripe
          intent: charge
          amount: '100'
          currency: usd
          networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
          paymentMethodTypes:
          - card
          - link
      deprecated: true
      x-successor-path: /v1/plan
      x-operation-id-source: normalized
      x-operation-id-original: postWundershipPlan
  /mpp/aurelius/plan:
    post:
      tags:
      - App Planning
      summary: Wundership app plan
      description: Generate a structured software plan, product outline, feature map, and implementation-ready app direction. This path is deprecated. Use https://mpp.openmodel.sh/v1/plan instead.
      operationId: postMppAureliusPlan
      requestBody:
        content:
          application/json:
            schema:
              type: object
              additionalProperties: false
              required:
              - prompt
              properties:
                project_name:
                  description: Optional project or product name.
                  type: string
                prompt:
                  description: Software idea, product request, or agent task to turn into an implementation-ready plan.
                  type: string
                preferred_stack:
                  description: Preferred technical stack, framework, language, or deployment target.
                  type: string
                target_customer:
                  description: Who the app or software plan is for.
                  type: string
                output_format:
                  description: Requested output style, such as implementation_plan, product_outline, or feature_map.
                  type: string
                constraints:
                  description: Hard requirements, limits, or product constraints.
                  items:
                    type: string
                  type: array
            examples:
              softwarePlan:
                value:
                  project_name: Agent Market
                  prompt: Build a marketplace for AI agents that can buy and sell paid API calls.
                  preferred_stack: Next.js, Spring Boot, PostgreSQL, Stripe
                  target_customer: Founders, AI builders, and autonomous agents
                  output_format: implementation_plan
                  constraints:
                  - Use a machine-payment endpoint
                  - Return clear implementation phases
                summary: Generate an implementation-ready app plan
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                type: object
                required:
                - ok
                - provider
                - productKey
                - paymentVerified
                - result
                properties:
                  generatedAt:
                    format: date-time
                    type: string
                  provider:
                    example: wundership
                    type: string
                  productKey:
                    example: wundership_plan
                    type: string
                  paymentVerified:
                    type: boolean
                  result:
                    type: object
                    additionalProperties: true
                    properties:
                      productBrief:
                        type: string
                      buildPhases:
                        items:
                          type: string
                        type: array
                      recommendedNextPaidCall:
                        additionalProperties: true
                        type: object
                      risks:
                        items:
                          type: string
                        type: array
                      architecture:
                        items:
                          type: string
                        type: array
                  ok:
                    type: boolean
                  productName:
                    example: Wundership app plan
                    type: string
                  receipt:
                    type: string
          description: Paid request completed
        '402':
          headers:
            WWW-Authenticate:
              schema:
                type: string
              description: Machine-payment challenge header when a compatible payment rail is active.
            X-Wundership-Agent-Price:
              schema:
                type: string
              description: Human-readable price for the paid endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaymentRequired'
          description: Payment required
        '502':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
          description: Paid forwarding failed
      x-agent-price:
        minorUnits: 100
        display: '1.00'
        currency: USD
      x-machine-payment-protocols:
      - mpp
      x-machine-payment-rails:
      - key: stripe_spt
        method: stripe
        intent: charge
        networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
        paymentMethodTypes:
        - card
        - link
        description: Stripe Shared Payment Token rail for card and Link machine payments.
      x-payment-info:
        price:
          amount: '1.000000'
          mode: fixed
          currency: USD
        pricingMode: fixed
        currency: USD
        amount: '1.000000'
        unit: request
        protocols:
        - mpp:
            method: stripe
            intent: charge
            currency: USD
            networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
            paymentMethodTypes:
            - card
            - link
        offers:
        - method: stripe
          intent: charge
          amount: '100'
          currency: usd
          networkId: profile_61UuYA3H1dpGiR9soA6UuYA20RSQieSC6KcBS11OK1dI
          paymentMethodTypes:
          - card
          - link
      deprecated: true
      x-successor-path: /v1/plan
      x-operation-id-source: normalized
      x-operation-id-original: postWundershipPlan
components:
  schemas:
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
        fallback:
          type: string
      additionalProperties: true
    PaymentRequired:
      type: object
      required:
      - error
      - status
      - resource
      - amount
      - payment
      properties:
        error:
          example: payment_required
          type: string
        type:
          example: machine_payment_required
          type: string
        status:
          example: 402
          type: integer
        protocols:
          items:
            type: string
          type: array
        provider:
          example: wundership
          type: string
        resource:
          format: uri
          type: string
        product:
          additionalProperties: true
          type: object
        amount:
          additionalProperties: true
          type: object
        payment:
          additionalProperties: true
          type: object
        requestId:
          type: string
  securitySchemes:
    mppPayment:
      description: MPP payment authorization returned after satisfying the HTTP 402 challenge.
      scheme: Payment
      type: http