Core API — peer transfers

naftiko: 1.0.0-alpha2
info:
  label: Core API — peer transfers
  description: 'Core API — peer transfers. 5 operations. Lead operation: Performs a peer transfer from one user to another.
    Self-contained Naftiko capability covering one Marqeta business surface.'
  tags:
  - Marqeta
  - peer transfers
  created: '2026-05-19'
  modified: '2026-05-19'
binds:
- namespace: env
  keys:
    MARQETA_API_KEY: MARQETA_API_KEY
capability:
  consumes:
  - type: http
    namespace: core-peer-transfers
    baseUri: ''
    description: Core API — peer transfers business capability. Self-contained, no shared references.
    resources:
    - name: peertransfers
      path: /peertransfers
      operations:
      - name: postpeertransfers
        method: POST
        description: Performs a peer transfer from one user to another
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: false
    - name: peertransfers-user-user_or_business_token
      path: /peertransfers/user/{user_or_business_token}
      operations:
      - name: getpeertransfersuseruserorbusinesstoken
        method: GET
        description: Returns all peer transfers for a user
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: user_or_business_token
          in: path
          type: string
          description: User or business token
          required: true
        - name: count
          in: query
          type: integer
          description: Number of transfers to retrieve
        - name: start_index
          in: query
          type: integer
          description: Start index
        - name: fields
          in: query
          type: string
          description: Comma-delimited list of fields to return (e.g. field_1,field_2,..). Leave blank to return all fields.
    - name: peertransfers-user-user_or_business_token-recipient
      path: /peertransfers/user/{user_or_business_token}/recipient
      operations:
      - name: getpeertransfersuseruserorbusinesstokenrecipient
        method: GET
        description: Returns received peer transfers for a user
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: user_or_business_token
          in: path
          type: string
          description: User or business token
          required: true
        - name: count
          in: query
          type: integer
          description: Number of transfers to retrieve
        - name: start_index
          in: query
          type: integer
          description: Start index
        - name: fields
          in: query
          type: string
          description: Comma-delimited list of fields to return (e.g. field_1,field_2,..). Leave blank to return all fields.
    - name: peertransfers-user-user_or_business_token-sender
      path: /peertransfers/user/{user_or_business_token}/sender
      operations:
      - name: getpeertransfersuseruserorbusinesstokensender
        method: GET
        description: Returns sent peer transfers for a user
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: user_or_business_token
          in: path
          type: string
          description: User or business token
          required: true
        - name: count
          in: query
          type: integer
          description: Number of transfers to retrieve
        - name: start_index
          in: query
          type: integer
          description: Start index
        - name: fields
          in: query
          type: string
          description: Comma-delimited list of fields to return (e.g. field_1,field_2,..). Leave blank to return all fields.
    - name: peertransfers-token
      path: /peertransfers/{token}
      operations:
      - name: getpeertransferstoken
        method: GET
        description: Returns details of a previous transfer
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: token
          in: path
          type: string
          required: true
    authentication:
      type: basic
      username: '{{env.MARQETA_USER}}'
      password: '{{env.MARQETA_PASS}}'
  exposes:
  - type: rest
    namespace: core-peer-transfers-rest
    port: 8080
    description: REST adapter for Core API — peer transfers. One Spectral-compliant resource per consumed operation, prefixed
      with /v1.
    resources:
    - path: /v1/peertransfers
      name: peertransfers
      description: REST surface for peertransfers.
      operations:
      - method: POST
        name: postpeertransfers
        description: Performs a peer transfer from one user to another
        call: core-peer-transfers.postpeertransfers
        with:
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/peertransfers/user/{user-or-business-token}
      name: peertransfers-user-user-or-business-token
      description: REST surface for peertransfers-user-user_or_business_token.
      operations:
      - method: GET
        name: getpeertransfersuseruserorbusinesstoken
        description: Returns all peer transfers for a user
        call: core-peer-transfers.getpeertransfersuseruserorbusinesstoken
        with:
          user_or_business_token: rest.user_or_business_token
          count: rest.count
          start_index: rest.start_index
          fields: rest.fields
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/peertransfers/user/{user-or-business-token}/recipient
      name: peertransfers-user-user-or-business-token-recipient
      description: REST surface for peertransfers-user-user_or_business_token-recipient.
      operations:
      - method: GET
        name: getpeertransfersuseruserorbusinesstokenrecipient
        description: Returns received peer transfers for a user
        call: core-peer-transfers.getpeertransfersuseruserorbusinesstokenrecipient
        with:
          user_or_business_token: rest.user_or_business_token
          count: rest.count
          start_index: rest.start_index
          fields: rest.fields
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/peertransfers/user/{user-or-business-token}/sender
      name: peertransfers-user-user-or-business-token-sender
      description: REST surface for peertransfers-user-user_or_business_token-sender.
      operations:
      - method: GET
        name: getpeertransfersuseruserorbusinesstokensender
        description: Returns sent peer transfers for a user
        call: core-peer-transfers.getpeertransfersuseruserorbusinesstokensender
        with:
          user_or_business_token: rest.user_or_business_token
          count: rest.count
          start_index: rest.start_index
          fields: rest.fields
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/peertransfers/{token}
      name: peertransfers-token
      description: REST surface for peertransfers-token.
      operations:
      - method: GET
        name: getpeertransferstoken
        description: Returns details of a previous transfer
        call: core-peer-transfers.getpeertransferstoken
        with:
          token: rest.token
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: core-peer-transfers-mcp
    port: 9090
    transport: http
    description: MCP adapter for Core API — peer transfers. One tool per consumed operation, routed inline through this capability's
      consumes block.
    tools:
    - name: performs-peer-transfer-one-user
      description: Performs a peer transfer from one user to another
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: core-peer-transfers.postpeertransfers
      with:
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: returns-all-peer-transfers-user
      description: Returns all peer transfers for a user
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: core-peer-transfers.getpeertransfersuseruserorbusinesstoken
      with:
        user_or_business_token: tools.user_or_business_token
        count: tools.count
        start_index: tools.start_index
        fields: tools.fields
      outputParameters:
      - type: object
        mapping: $.
    - name: returns-received-peer-transfers-user
      description: Returns received peer transfers for a user
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: core-peer-transfers.getpeertransfersuseruserorbusinesstokenrecipient
      with:
        user_or_business_token: tools.user_or_business_token
        count: tools.count
        start_index: tools.start_index
        fields: tools.fields
      outputParameters:
      - type: object
        mapping: $.
    - name: returns-sent-peer-transfers-user
      description: Returns sent peer transfers for a user
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: core-peer-transfers.getpeertransfersuseruserorbusinesstokensender
      with:
        user_or_business_token: tools.user_or_business_token
        count: tools.count
        start_index: tools.start_index
        fields: tools.fields
      outputParameters:
      - type: object
        mapping: $.
    - name: returns-details-previous-transfer
      description: Returns details of a previous transfer
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: core-peer-transfers.getpeertransferstoken
      with:
        token: tools.token
      outputParameters:
      - type: object
        mapping: $.