MX Technologies ach return API

The ach return API from MX Technologies — 2 operation(s) for ach return.

Operations 3

GET /ach_returns/{ach_return_guid} Read ACH Return #
GET /ach_returns List ACH Returns #
POST /ach_returns Create ACH Return #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/mx-technologies-ach-return-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

mx-technologies-ach-return-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: Mx Technologies ach return API
  contact:
    name: MX Platform API
    url: https://www.mx.com/products/platform-api
  version: '1.0'
  description: 'Operations tagged ach return across 2 of this provider''s published API definitions: mx-technologies-platform-openapi.yml, mx-technologies-platform-v20250224-openapi.yml. Each path carries the servers of the definition it was published in.'
servers:
- url: https://int-api.mx.com
- url: https://api.mx.com
security:
- basicAuth: []
tags:
- name: ach return
paths:
  /ach_returns/{ach_return_guid}:
    get:
      description: ':::warning

        The features documented here are in a beta state, and this documentation is considered draft material subject to frequent change.

        :::


        Use this endpoint to get an ACH return by its `guid` or `id`.'
      operationId: readACHRetrun
      parameters:
      - $ref: '#/components/parameters/achReturnGuid'
      responses:
        '200':
          content:
            application/vnd.mx.api.v1+json:
              schema:
                $ref: '#/components/schemas/ACHReturnResponseBody'
          description: OK
      summary: Read ACH Return
      tags:
      - ach return
    servers:
    - url: https://int-api.mx.com
    - url: https://api.mx.com
  /ach_returns:
    get:
      description: ':::warning

        The features documented here are in a beta state, and this documentation is considered draft material subject to frequent change.

        :::


        Use this endpoint to get all ACH returns.'
      operationId: listACHRetruns
      parameters:
      - $ref: '#/components/parameters/institutionGuid'
      - $ref: '#/components/parameters/returnedAt'
      - $ref: '#/components/parameters/resolvedStatusAt'
      - $ref: '#/components/parameters/returnCode'
      - $ref: '#/components/parameters/returnStatus'
      - $ref: '#/components/parameters/page'
      - $ref: '#/components/parameters/recordsPerPage'
      responses:
        '200':
          content:
            application/vnd.mx.api.v1+json:
              schema:
                $ref: '#/components/schemas/ACHReturnsResponseBody'
          description: OK
      summary: List ACH Returns
      tags:
      - ach return
    post:
      description: ':::warning

        The features documented here are in a beta state, and this documentation is considered draft material subject to frequent change.

        :::


        Use this endpoint to create an ACH return in our system.'
      operationId: createACHReturn
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ACHReturnCreateRequestBody'
        description: ACH return object to be created.
        required: true
      responses:
        '200':
          content:
            application/vnd.mx.api.v1+json:
              schema:
                $ref: '#/components/schemas/ACHReturnResponseBody'
          description: OK
      summary: Create ACH Return
      tags:
      - ach return
    servers:
    - url: https://int-api.mx.com
    - url: https://api.mx.com
components:
  parameters:
    institutionGuid:
      description: The identifier for the institution associated with the ACH return. Defined by MX.
      in: query
      name: institution_guid
      required: false
      schema:
        type: string
    returnStatus:
      description: The status of the return. See [Return Statuses](/api-reference/platform-api/reference/ach-return-fields#return-status) for a complete list.
      example: SUBMITTED
      in: query
      name: return_status
      required: false
      schema:
        type: string
    resolvedStatusAt:
      description: The date and time when the return was resolved by the Receiving Financial Depository Institution (RDFI) in ISO 8601 format without timestamp
      example: '2025-02-13T18:09:00+00:00'
      in: query
      name: resolved_status_at
      required: false
      schema:
        type: string
    returnedAt:
      description: The date and time when the return was reported by the Receiving Financial Depository Institution (RDFI) in ISO 8601 format without timestamp.
      example: '2025-02-13T18:09:00+00:00'
      in: query
      name: returned_at
      required: false
      schema:
        type: string
    page:
      description: Results are paginated. Specify current page.
      example: 1
      in: query
      name: page
      schema:
        type: integer
    recordsPerPage:
      description: This specifies the number of records to be returned on each page. Defaults to `25`. The valid range is from `10` to `100`. If the value exceeds `100`, the default value of `25` will be used instead.
      example: 10
      in: query
      name: records_per_page
      schema:
        type: integer
    achReturnGuid:
      name: ach_return_guid
      description: The unique identifier (`guid`) for the ACH return. Defined by MX.
      required: true
      in: path
      schema:
        type: string
    returnCode:
      description: The associated ACH return code and notice of change code. See [Return Codes](/api-reference/platform-api/reference/ach-return-fields#return-codes) for a complete list.
      in: query
      name: return_code
      required: false
      schema:
        type: string
    returnStatus_2:
      description: The status of the return. See [Return Statuses](https://docs.mx.com/api-reference/platform-api/reference/ach-return-fields/#return-status) for a complete list.
      example: SUBMITTED
      in: query
      name: return_status
      required: false
      schema:
        type: string
    returnCode_2:
      description: The associated ACH return code and notice of change code. See [Return Codes](https://docs.mx.com/api-reference/platform-api/reference/ach-return-fields/#return-codes) for a complete list.
      in: query
      name: return_code
      required: false
      schema:
        type: string
  schemas:
    ACHReturnCreateRequestBody:
      properties:
        ach_return:
          $ref: '#/components/schemas/ACHReturnCreateRequest'
      type: object
    ACHReturnCreateRequest:
      properties:
        account_guid:
          description: The unique identifier for the account associated with the transaction. Defined by MX.
          example: ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1
          type: string
        account_number_last_four:
          description: The last 4 digits of the account number used for the transaction by the Originating Depository Financial Institution (ODFI).
          example: '1234'
          type: string
        ach_initiated_at:
          description: The date and time when the transaction was initiated by the Originating Depository Financial Institution (ODFI) in ISO 8601 format without timestamp.
          example: '2025-02-13T18:08:00+00:00'
          type: string
        corrected_account_number:
          description: The account number correction reported by the RDFI. Populate only if the `resolution_code` is `NOTICE_OF_CHANGE`.
          example: null
          type: string
        corrected_routing_number:
          description: The routing number correction reported by the RDFI. Populate only if the `resolution_code` is `NOTICE_OF_CHANGE`. Must be a valid 9-digit routing number format.
          example: null
          type: string
        id:
          description: Client-defined identifier for this specific return submission. Allows you to track and reference you requests.
          example: client_ach_id_1234
          type: string
        member_guid:
          example: MBR-7c6f361b-e582-15b6-60c0-358f12466b4b
          description: The unique identifier for the member associated with the transaction. Defined by MX.
          type: string
        return_account_number:
          description: Incorrect account number used in the ACH transaction.
          example: null
          type: string
        return_code:
          description: The associated ACH return code and notice of change code (for example, R02, R03, R04, R05, R20, NOC). See [Return Codes](/api-reference/platform-api/reference/ach-return-fields#return-codes) for a complete list.
          example: R01
          type: string
        return_notes:
          description: Notes that you set to inform MX on internal ACH processing.
          example: null
          type: string
        return_routing_number:
          description: Incorrect routing number used in the ACH transaction.
          example: null
          type: string
        returned_at:
          description: The date and time when the return was reported by the Receiving Financial Depository Institution (RDFI) in ISO 8601 format without timestamp.
          example: '2025-02-13T18:09:00+00:00'
          type: string
        sec_code:
          description: The SEC code (Standard Entry Class Code)–a three-letter code describing how a payment was authorized (for example, `WEB`). See [SEC Codes](/api-reference/platform-api/reference/ach-return-fields#sec-codes) for a complete list.
          example: PPD
          type: string
        transaction_amount:
          description: The amount of the transaction.
          example: 225.84
          type: number
        transaction_amount_range:
          description: The transaction amount range, used for impact assessment.
          example: null
          type: number
        user_guid:
          example: USR-fa7537f3-48aa-a683-a02a-b18940482f54
          description: MX-defined identifier for the user associated with the ACH return.
          type: string
      required:
      - member_guid
      - account_guid
      - id
      - user_guid
      - return_code
    ACHReturnResponseBody:
      properties:
        ach_return:
          $ref: '#/components/schemas/ACHResponse'
      type: object
    PaginationResponse:
      properties:
        current_page:
          example: 1
          type: integer
        per_page:
          example: 25
          type: integer
        total_entries:
          example: 1
          type: integer
        total_pages:
          example: 1
          type: integer
      type: object
    ACHResponse:
      properties:
        account_guid:
          example: ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1
          type: string
        account_number_last_four:
          example: '1234'
          type:
          - string
          - 'null'
        account_type:
          type:
          - string
          - 'null'
          example: CREDIT
        ach_initiated_at:
          example: '2025-02-13T18:08:00+00:00'
          type:
          - string
          - 'null'
        client_guid:
          example: CLT-abcd-1234
          type: string
        corrected_account_number:
          example: null
          type:
          - string
          - 'null'
        corrected_routing_number:
          example: null
          type:
          - string
          - 'null'
        created_at:
          example: null
          type: string
        guid:
          example: ACH-d74cb14f-fd0a-449f-991b-e0362a63d9c6
          type: string
        id:
          example: client_ach_return_id_1234
          type: string
        institution_guid:
          example: INS-34r4f44b-cfge-0f6e-3484-21f47e45tfv7
          type: string
        investigation_notes:
          example: null
          type:
          - string
          - 'null'
        member_guid:
          example: MBR-7c6f361b-e582-15b6-60c0-358f12466b4b
          type: string
        processing_errors:
          example: null
          type:
          - string
          - 'null'
        resolution_code:
          example: null
          type:
          - string
          - 'null'
        resolution_detail:
          example: null
          type:
          - string
          - 'null'
        resolved_status_at:
          example: null
          type:
          - string
          - 'null'
        return_code:
          example: R01
          type: string
        return_notes:
          example: null
          type:
          - string
          - 'null'
        return_account_number:
          example: null
          type:
          - string
          - 'null'
        return_routing_number:
          example: null
          type:
          - string
          - 'null'
        return_status:
          example: SUBMITTED
          type:
          - string
          - 'null'
        returned_at:
          example: '2025-02-13T18:09:00+00:00'
          type:
          - string
          - 'null'
        sec_code:
          example: PPD
          type:
          - string
          - 'null'
        started_processing_at:
          example: null
          type:
          - string
          - 'null'
        submitted_at:
          example: null
          type:
          - string
          - 'null'
        transaction_amount:
          example: 225.84
          format: double
          type:
          - number
          - 'null'
        updated_at:
          example: null
          type: string
        user_guid:
          example: USR-fa7537f3-48aa-a683-a02a-b18940482f54
          type: string
      type: object
    ACHReturnsResponseBody:
      properties:
        ach_returns:
          items:
            $ref: '#/components/schemas/ACHResponse'
          type: array
        pagination:
          $ref: '#/components/schemas/PaginationResponse'
      type: object
    ACHReturnCreateRequest_2:
      properties:
        account_guid:
          description: The unique identifier for the account associated with the transaction. Defined by MX.
          example: ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1
          type: string
        account_number_last_four:
          description: The last 4 digits of the account number used for the transaction by the Originating Depository Financial Institution (ODFI).
          example: '1234'
          type:
          - string
          - 'null'
        ach_initiated_at:
          description: The date and time when the transaction was initiated by the Originating Depository Financial Institution (ODFI) in ISO 8601 format without timestamp.
          example: '2025-02-13T18:08:00+00:00'
          type:
          - string
          - 'null'
        corrected_account_number:
          description: The account number correction reported by the RDFI. Populate only if the `resolution_code` is `NOTICE_OF_CHANGE`.
          example: null
          type:
          - string
          - 'null'
        corrected_routing_number:
          description: The routing number correction reported by the RDFI. Populated only if the `resolution_code` is `NOTICE_OF_CHANGE`. Must be a valid 9-digit routing number format.
          example: null
          type:
          - string
          - 'null'
        id:
          description: Client-defined identifier for this specific return submission. Allows you to track and reference you requests.
          example: client_ach_id_1234
          type: string
        member_guid:
          example: MBR-7c6f361b-e582-15b6-60c0-358f12466b4b
          description: The unique identifier for the member associated with the transaction. Defined by MX.
          type: string
        return_account_number:
          description: Incorrect account number used in the ACH transaction.
          example: 'null'
          type: string
        return_code:
          description: A short, machine-readable code that categorizes the type of resolution or reason for the status. See [Resolution Codes](https://docs.mx.com/api-reference/platform-api/reference/ach-return-fields/#resolution-codes) for a complete list.
          example: R01
          type: string
        return_notes:
          description: Notes that you set to inform MX on internal ACH processing.
          example: 'null'
          type: string
        return_routing_number:
          description: Incorrect routing number used in the ACH transaction.
          example: 'null'
          type: string
        returned_at:
          description: The date and time when the return was reported by the Receiving Financial Depository Institution (RDFI) in ISO 8601 format without timestamp.
          example: '2025-02-13T18:09:00+00:00'
          type: string
        sec_code:
          description: The SEC code (Standard Entry Class Code)–a three-letter code describing how a payment was authorized (for example, `WEB`). See [SEC Codes](#sec-codes) for a complete list.
          example: PPD
          type: string
        transaction_amount:
          description: The amount of the transaction.
          example: 225.84
          type: number
        transaction_amount_range:
          description: The transaction amount range, used for impact assessment.
          example: 0
          type: number
        user_guid:
          example: USR-fa7537f3-48aa-a683-a02a-b18940482f54
          description: MX-defined identifier for the user associated with the ACH return.
          type: string
      required:
      - member_guid
      - account_guid
      - id
      - user_guid
      - return_code
    PaginationResponse_2:
      properties:
        current_page:
          description: The page delivered by the current response.
          example: 1
          type: integer
        per_page:
          description: The number of records delivered with each page.
          example: 25
          type: integer
        total_entries:
          description: The total number of records available.
          example: 1
          type: integer
        total_pages:
          description: The total number of pages available.
          example: 1
          type: integer
      type: object
    ACHResponse_2:
      properties:
        account_guid:
          description: The unique identifier for an account. Defined by MX.
          example: ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1
          type: string
        account_number_last_four:
          description: The last 4 digits of the account number used for the transaction by the Originating Depository Financial Institution (ODFI).
          example: '1234'
          type:
          - string
          - 'null'
        account_type:
          description: The type of account. Some account types may include subtypes.
          example: CHECKING
          type:
          - string
          - 'null'
          enum:
          - ANY
          - CASH
          - CHECKING
          - CHECKING_LINE_OF_CREDIT
          - CREDIT_CARD
          - LOAN
          - LINE_OF_CREDIT
          - SAVINGS
          - INVESTMENT
          - MORTGAGE
          - INSURANCE
          - PREPAID
          - PROPERTY
        ach_initiated_at:
          description: The date and time when the transaction was initiated by the Originating Depository Financial Institution (ODFI) in ISO 8601 format without timestamp.
          example: '2025-02-13T18:08:00+00:00'
          type:
          - string
          - 'null'
        client_guid:
          description: The unique identifier for the client associated with the insight. Defined by MX.
          example: CLT-abcd-1234
          type: string
        corrected_account_number:
          description: The account number correction reported by the RDFI. Populate only if the `resolution_code` is `NOTICE_OF_CHANGE`.
          example: null
          type:
          - string
          - 'null'
        corrected_routing_number:
          description: The routing number correction reported by the RDFI. Populated only if the `resolution_code` is `NOTICE_OF_CHANGE`. Must be a valid 9-digit routing number format.
          example: null
          type:
          - string
          - 'null'
        created_at:
          description: The date and time the ACH return was created, represented in ISO 8601 format with a timestamp.
          example: '2025-02-13T18:08:00+00:00'
          type: string
        guid:
          description: The unique identifier for the ACH return record. Defined by MX.
          example: ACH-d74cb14f-fd0a-449f-991b-e0362a63d9c6
          type: string
        id:
          description: Client-defined identifier for this specific return submission. Allows you to track and reference your requests.
          example: client_ach_return_id_1234
          type: string
        institution_guid:
          description: The unique identifier for an institution. Defined by MX.
          example: INS-34r4f44b-cfge-0f6e-3484-21f47e45tfv7
          type: string
        investigation_notes:
          description: Notes added by Product Support during investigation of the ACH return.
          example: null
          type:
          - string
          - 'null'
        member_guid:
          description: The unique identifier for the member. Defined by MX.
          example: MBR-7c6f361b-e582-15b6-60c0-358f12466b4b
          type: string
        processing_errors:
          description: Any errors that occurred during processing.
          example: null
          type:
          - string
          - 'null'
        resolution_code:
          description: A short, machine-readable code that categorizes the type of resolution or reason for the status. See [Resolution Codes](/api-reference/platform-api/reference/ach-return-fields#resolution-codes) for a complete list.
          example: null
          type:
          - string
          - 'null'
        resolution_detail:
          description: A more detailed, human-readable message providing context and next steps related to the `return_status` and `resolution_code`.
          example: null
          type:
          - string
          - 'null'
        resolved_status_at:
          description: Date and time when the return was marked as resolved.
          example: null
          type:
          - string
          - 'null'
        return_code:
          description: The associated ACH return codes and notice of change codes (for example, R02, R03, R04, R05, R20, NOC). See [Return Codes](/api-reference/platform-api/reference/ach-return-fields#return-codes) for a complete list
          example: R01
          type: string
        return_notes:
          description: Notes that you set to inform MX on internal ACH processing.
          example: null
          type:
          - string
          - 'null'
        return_account_number:
          description: Incorrect account number used in the ACH transaction.
          example: null
          type:
          - string
          - 'null'
        return_routing_number:
          description: Incorrect routing number used in the ACH transaction.
          example: null
          type:
          - string
          - 'null'
        return_status:
          description: The current processing status of the ACH return. See [Return Status](/api-reference/platform-api/reference/ach-return-fields#return-status) for a complete list of statuses.
          example: SUBMITTED
          type:
          - string
          - 'null'
        returned_at:
          description: The date and time when the return was reported by the Receiving Financial Depository Institution (RDFI) in ISO 8601 format without timestamp.
          example: '2025-02-13T18:09:00+00:00'
          type:
          - string
          - 'null'
        sec_code:
          description: The three-letter SEC code (Standard Entry Class Code) describing how a payment was authorized (for example, `WEB`). See [SEC Codes](/api-reference/platform-api/reference/ach-return-fields#sec-codes) for a complete list.
          example: PPD
          type:
          - string
          - 'null'
        started_processing_at:
          description: Date and time when MX started processing the return.
          example: null
          type:
          - string
          - 'null'
        submitted_at:
          description: Date and time when the record was submitted through the API.
          example: null
          type:
          - string
          - 'null'
        transaction_amount:
          description: The amount of the transaction.
          example: 225.84
          format: double
          type:
          - number
          - 'null'
        updated_at:
          description: Date and time when the ACH return record was last updated.
          example: 'null'
          type: string
        user_guid:
          description: The unique identifier for the user. Defined by MX.
          example: USR-fa7537f3-48aa-a683-a02a-b18940482f54
          type: string
      type: object
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
    basicAuth:
      scheme: basic
      type: http
x-refined-from:
- mx-technologies-platform-openapi.yml
- mx-technologies-platform-v20250224-openapi.yml