openapi: 3.0.3
info:
  title: TrueLayer Payments Mandates API
  description: The TrueLayer Payments API v3 enables applications to create and manage open banking payments, payouts, refunds, and variable recurring payment mandates across the UK and EU. TrueLayer connects to 69+ banks and provides a unified interface for instant bank payments using open banking rails. Authentication requires signed requests with private keys and OAuth2 access tokens.
  version: 3.0.0
  contact:
    name: TrueLayer Support
    url: https://docs.truelayer.com
  termsOfService: https://truelayer.com/legal/
servers:
- url: https://api.truelayer.com
  description: TrueLayer Production API
- url: https://api.truelayer-sandbox.com
  description: TrueLayer Sandbox (testing)
security:
- BearerAuth: []
tags:
- name: Mandates
  description: Variable recurring payment mandates
paths:
  /v3/mandates:
    post:
      summary: Create Mandate
      description: Create a Variable Recurring Payment (VRP) mandate. A mandate authorizes the payee to initiate future payments within defined parameters.
      operationId: createMandate
      tags:
      - Mandates
      parameters:
      - name: Tl-Signature
        in: header
        required: true
        schema:
          type: string
      - name: Idempotency-Key
        in: header
        required: true
        schema:
          type: string
          format: uuid
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateMandateRequest'
      responses:
        '200':
          description: Mandate created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateMandateResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v3/mandates/{id}:
    get:
      summary: Get Mandate
      description: Retrieve a mandate by ID.
      operationId: getMandate
      tags:
      - Mandates
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
          format: uuid
      responses:
        '200':
          description: Mandate details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Mandate'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      summary: Revoke Mandate
      description: Revoke an active VRP mandate.
      operationId: revokeMandate
      tags:
      - Mandates
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
          format: uuid
      - name: Tl-Signature
        in: header
        required: true
        schema:
          type: string
      responses:
        '204':
          description: Mandate revoked
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    Unauthorized:
      description: Unauthorized - invalid token or missing signature
      content:
        application/json:
          schema:
            type: object
            properties:
              type:
                type: string
              title:
                type: string
    BadRequest:
      description: Bad request - invalid parameters
      content:
        application/json:
          schema:
            type: object
            properties:
              type:
                type: string
              title:
                type: string
              trace_id:
                type: string
              errors:
                type: object
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            type: object
            properties:
              type:
                type: string
              title:
                type: string
  schemas:
    CreateMandateResponse:
      type: object
      properties:
        id:
          type: string
          format: uuid
        user:
          type: object
          properties:
            id:
              type: string
              format: uuid
        resource_token:
          type: string
          description: JWT for mandate authorization
        status:
          type: string
          enum:
          - authorization_required
    Mandate:
      type: object
      properties:
        id:
          type: string
          format: uuid
        currency:
          type: string
        mandate:
          type: object
        user:
          type: object
        status:
          type: string
          enum:
          - authorization_required
          - authorizing
          - authorized
          - revoked
          - failed
        constraints:
          type: object
        metadata:
          type: object
        created_at:
          type: string
          format: date-time
        authorized_at:
          type: string
          format: date-time
        revoked_at:
          type: string
          format: date-time
    CreateMandateRequest:
      type: object
      required:
      - mandate
      - currency
      - user
      properties:
        mandate:
          type: object
          required:
          - type
          - beneficiary
          properties:
            type:
              type: string
              enum:
              - commercial
              - sweeping
              description: Mandate type (commercial = to any account, sweeping = own accounts)
            provider_selection:
              type: object
            beneficiary:
              type: object
              required:
              - type
              properties:
                type:
                  type: string
                  enum:
                  - merchant_account
                  - external_account
                merchant_account_id:
                  type: string
                  format: uuid
                account_holder_name:
                  type: string
                account_identifier:
                  type: object
        currency:
          type: string
          enum:
          - GBP
          - EUR
        user:
          type: object
          required:
          - name
          properties:
            id:
              type: string
            name:
              type: string
            email:
              type: string
              format: email
        constraints:
          type: object
          description: Limits on mandate usage
          properties:
            valid_from:
              type: string
              format: date-time
            valid_to:
              type: string
              format: date-time
            maximum_individual_amount:
              type: integer
            periodic_limits:
              type: array
              items:
                type: object
                properties:
                  maximum_amount:
                    type: integer
                  period:
                    type: string
                    enum:
                    - day
                    - week
                    - fortnight
                    - month
                    - half_year
                    - year
        metadata:
          type: object
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: OAuth2 access token with payments scope