> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getsly.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Issue a refund

> Initiate a refund against a completed transfer. Omit `amount` for full refund. Multiple partial refunds per transfer are supported as long as the cumulative total ≤ original amount. Always send `X-Idempotency-Key`.



## OpenAPI

````yaml /api-reference/openapi.json post /v1/refunds
openapi: 3.1.0
info:
  title: Sly API
  description: >-
    The Agentic Economy Platform — stablecoin payments, agent wallets,
    multi-protocol commerce, and AI agent orchestration.
  version: 1.0.0
  contact:
    name: Sly
    url: https://getsly.ai
    email: support@getsly.ai
servers:
  - url: https://api.getsly.ai/v1
    description: Production
  - url: https://sandbox.getsly.ai/v1
    description: Sandbox
security:
  - bearerAuth: []
paths:
  /v1/refunds:
    post:
      tags:
        - Refunds
      summary: Issue a refund
      description: >-
        Initiate a refund against a completed transfer. Omit `amount` for full
        refund. Multiple partial refunds per transfer are supported as long as
        the cumulative total ≤ original amount. Always send `X-Idempotency-Key`.
      parameters:
        - schema:
            type: string
          required: false
          name: x-idempotency-key
          in: header
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateRefundInput'
      responses:
        '201':
          description: Refund initiated
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    $ref: '#/components/schemas/Refund'
                required:
                  - data
        '400':
          description: Validation error
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Error'
                  - properties:
                      error:
                        type: string
                      code:
                        type: string
                      details: {}
        '402':
          description: Insufficient balance in source wallet
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Error'
                  - properties:
                      error:
                        type: string
                      code:
                        type: string
                      details: {}
        '404':
          description: Original transfer not found
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Error'
                  - properties:
                      error:
                        type: string
                      code:
                        type: string
                      details: {}
        '409':
          description: >-
            Refund window expired, amount exceeds remaining, or state transition
            invalid
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Error'
                  - properties:
                      error:
                        type: string
                      code:
                        type: string
                      details: {}
      security:
        - bearerAuth: []
components:
  schemas:
    CreateRefundInput:
      type: object
      properties:
        originalTransferId:
          type: string
          format: uuid
        amount:
          type: number
          exclusiveMinimum: 0
          description: Omit for full refund
        reason:
          type: string
          enum:
            - duplicate_payment
            - service_not_rendered
            - customer_request
            - error
            - other
        reasonDetails:
          type: string
          maxLength: 1000
      required:
        - originalTransferId
        - reason
    Refund:
      type: object
      properties:
        id:
          type: string
          format: uuid
        original_transfer_id:
          type: string
          format: uuid
        amount:
          type: string
        currency:
          type: string
        reason:
          type: string
          enum:
            - duplicate_payment
            - service_not_rendered
            - customer_request
            - error
            - other
        reason_details:
          type:
            - string
            - 'null'
        status:
          type: string
          enum:
            - pending
            - completed
            - failed
        refund_transfer_id:
          type:
            - string
            - 'null'
          format: uuid
        created_at:
          type: string
          format: date-time
        completed_at:
          type:
            - string
            - 'null'
          format: date-time
      required:
        - id
        - original_transfer_id
        - amount
        - currency
        - reason
        - status
        - created_at
    Error:
      type: object
      properties:
        error:
          type: string
        code:
          type: string
        details: {}
        request_id:
          type: string
      required:
        - error
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        API key (pk_test_* or pk_live_*), JWT session, agent token (agent_*),
        Ed25519 session (sess_*), or portal token (portal_*).

````