KeyCorp

KeyBank ACH Inquiry API

The ACH Inquiry API lets commercial clients check the current status and detail of ACH transactions posted to their KeyBank accounts. It provides operations to list ACH transactions, retrieve full detail by PAR number, look up settled items by settlement transaction id, and a health check, supporting reconciliation and exception handling workflows. Secured with OAuth2 bearer tokens and client certificates over https://partner-api.key.com with a QV sandbox environment for testing.

GitHub OpenAPI

Documentation

📖
Documentation
https://developer.key.com/docs/achinquiry

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/keycorp/refs/heads/main/openapi/keycorp-ach-inquiry-openapi.yml

OpenAPI Specification

keycorp-ach-inquiry-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: ACH Inquiry
  version: 2.1.2
  description: Use the ACH Inquiry API to get the status on ACH transactions based on your query criteria.
  contact:
    name: KeyBank Developer Support
    email: embedded_banking_support@keybank.com

servers:
  - url: https://partner-api-qv.key.com
    description: Non-Production environment (QV)
  - url: https://partner-api.key.com
    description: Production and Simulator environment

tags:
  - name: HealthCheck
    description: Verify you can connect to the API service.
  - name: ACH Transactions
    description: ACH Inquiry functions to list and retrieve ACH transaction details

security:
  - bearerAuth: []

paths:
  /accounts/transactions/v1/healthCheck:
    get:
      tags:
        - HealthCheck
      summary: Health check
      description: Verify you can connect to the API service. A bearer token is required.
      operationId: healthCheck
      security:
        - bearerAuth: []
      responses:
        '200':
          description: Successful response
          headers:
            X-CorrelationId:
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HealthResponse'
              example:
                Status: Ok
                Source: Roundtrip
                Timestamp: '2022-09-15T04:49:03'
                ClientIp: 192.0.2.1
                X-Forwarded-For: '[192.0.2.1]'

  /accounts/transactions/v1/ach/detail/{parNumber}:
    get:
      security:
        - bearerAuth: []
      tags:
        - ACH Transactions
      summary: Get details about an ACH transaction with a parNumber.
      operationId: searchAchTransaction
      description: Use the parNumber to retrieve information about an ACH transaction. The parNumber can be obtained from the ACH List endpoint.
      parameters:
        - name: X-CorrelationId
          in: header
          schema:
            type: string
          required: false
          description: Universal ID to trace the transaction across all systems involved.
        - name: parNumber
          in: path
          required: true
          description: The unique parNumber assigned to the transaction by the ACH processor.
          schema:
            type: string
            maxLength: 50
          example: 22018007665985
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AchDetailTransaction'
              example:
                transactionStatus: COLLECTED
                traceNumber: '043000090716192'
                parNumber: '22018007665985'
                transactionAmount: 10.01
                settlementDate: '2021-03-08'
                collectionDate: '2021-03-07'
                transactionCode: '22'
                transactionDescription: DEPOSIT
                authorizedCustomerName: TEST CUSTOMER1
                standardEntryClassCode: CCD
                receivingAccount:
                  accountNumber: '123456789012'
                  routingNumber: '123456789'
                  bankNumber: '0000'
                receivingParty:
                  customerIdentificationNumber: '099999999'
                  companyName: MERCHANT
                  customerName: TEST MERCHANT
                originatingAccount:
                  accountNumber: '3123456789'
                  routingNumber: '1234567890'
                  bankNumber: '0000'
                originatingParty:
                  customerIdentificationNumber: '1234567'
                  companyName: COMPANY NAME 1
                  customerName: CUSTOMER NAME 1
                returnReasonCode: R02
                returnReasonDescription: Account Closed
                returnDate: '2024-02-01'
                addendaCount: 1
                notificationOfChangeAddendaCount: 0
                internationalAddendaCount: 0
                settlementAmount: 123.45
                settlementTransactionId: '23218003015954'
                customData: merchant:status
                checkSerialNumber: '4345'
                transactionDirection: Receiving Item
                standardEntryClassDescription: Cash Concentration or Disbursement
                transactionCodeDescription: Automated Deposit
                addenda:
                  - sequenceNumber: 1
                    entryDetailSequenceNumber: '188'
                    paymentRelatedInformation: 'Addenda Record (Applies to CCD, CTX, PPD, and WEB entries)'
                notificationOfChange:
                  - changeCode: C02
                    changeDescription: 'Incorrect transit/routing number'
                    correctedData: '1234567890'
        '404':
          description: No ACH transaction was found with the provided parNumber
          headers:
            X-CorrelationId:
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/detail/22018007665985
                ServiceError:
                  metadata:
                    messages:
                      - code: AI-Detail-404-no-records-100
                        message: Record Not Found
        '500':
          description: Unexpected server error
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations. 
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                TransactionTime: '2021-06-11T16:31:34.041Z'
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/detail/22018007665985
                ServiceError:
                  metadata:
                    messages:
                    - code: 500-InternalServerError
                      message: An unexpected error occurred.  Please try again later or contact support if the problem persists.

  /accounts/transactions/v1/ach/list:
    post:
      operationId: searchAchTransactions
      security:
        - bearerAuth: []
      tags:
        - ACH Transactions
      summary: Advanced search for ACH transactions
      description: Search for ACH transactions by passing certain search parameters.
      parameters:
        - name: X-CorrelationId
          in: header
          schema:
            type: string
          required: false
          description: Universal ID to trace the transaction across all systems involved.
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - accountNumber
                - fromDate
                - toDate
              properties:
                accountNumber:
                  type: string
                  description: The bank account number. This field cannot exceed 16 characters.
                  minLength: 1
                  maxLength: 16
                  examples:
                    - '3123456789'
                fromDate:
                  type: string
                  format: date
                  description: 'Start date for the date range. This date must be the current date or prior to the current date. Cannot be earlier than 180 days prior to the current date. Format: YYYY-MM-DD'
                  examples:
                    - '2024-02-01'
                toDate:
                  type: string
                  format: date
                  description: 'End date for the date range. This date can be the current day or a later date from the start date (fromDate). The date range should not be longer than 31 days. Format: YYYY-MM-DD'
                  examples:
                    - '2024-02-01'
                minimumAmount:
                  type: number
                  format: double
                  description: The minimum dollar amount of the transaction. This amount must be less than or equal to the maximum amount. Leave blank or enter zero for no minimum amount.
                  minimum: 0
                  maximum: 1000000000
                  examples:
                    - 100.00
                maximumAmount:
                  type: number
                  format: double
                  description: The maximum dollar amount of the transaction. This amount must be greater than or equal to the minimum amount. Leave blank to retrieve all amounts. This amount cannot exceed one billion dollars.
                  minimum: 0
                  maximum: 1000000000
                  examples:
                    - 75020.50
                traceNumber:
                  type: string
                  description: The traceNumber for the transaction provided by the originator.
                  minLength: 1
                  maxLength: 16
                  examples:
                    - '043000090716192'
                pageNumber:
                  type: integer
                  description: The number of the page being viewed. This number must be greater than or equal to 1.
                  examples:
                    - 1
                pageSize:
                  type: integer
                  description: The number of records per page. Must be between 1 and 1000.
                  examples:
                    - 500
            example:
              accountNumber: '3123456789'
              fromDate: '2024-02-01'
              toDate: '2024-02-01'
              minimumAmount: 100.00
              maximumAmount: 75020.50
              traceNumber: '043000090716192'
              pageNumber: 1
              pageSize: 150
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  transactions:
                    type: array
                    maxItems: 1000
                    description: List of transactions from search criteria.
                    items:
                      $ref: '#/components/schemas/AchListTransaction'
                  metadata:
                    allOf:
                      - $ref: '#/components/schemas/PageMetadata'
                    description: Information about the data pages returned.
              example:
                transactions:
                  - parNumber: '22018007665985'
                    transactionStatus: COLLECTED
                    traceNumber: '043000090716192'
                    transactionAmount: 10.01
                    collectionDate: '2021-03-07'
                    settlementDate: '2021-03-08'
                    transactionCode: '22'
                    transactionDescription: DEPOSIT
                    authorizedCustomerName: TEST CUSTOMER1
                    standardEntryClassCode: CCD
                    receivingAccount:
                      accountNumber: '123456789012'
                    receivingParty:
                      customerIdentificationNumber: '099999999'
                      companyName: MERCHANT
                    originatingAccount:
                      accountNumber: '3123456789'
                    originatingParty:
                      customerIdentificationNumber: '1234567'
                      companyName: COMPANY NAME 1
                    returnDate: '2024-02-01'
                    returnReasonCode: R02
                    returnReasonDescription: Account Closed
                    addendaCount: 1
                    notificationOfChangeAddendaCount: 0
                    internationalAddendaCount: 0
                    settlementAmount: 123.45
                    settlementTransactionId: '23218003015954'
                metadata:
                  page:
                    pageNumber: 1
                    pageSize: 25
                    totalPages: 3
                    totalRecords: 75
                    lastPage: false
        '400':
          description: Bad input parameter
          headers:
            X-CorrelationId:
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
              schema:
                type: string
          content:
            application/json:
              schema:
                type: object
                properties:
                  metadata:
                    allOf:
                      - $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/list
                ServiceError:
                  metadata:
                    messages:
                      - code: AI-List-400-fromDate-105
                        message: fromDate format must be YYYY-MM-DD
                      - code: AI-List-400-fromDate-117
                        message: fromDate must be a valid date
        '403':
          description: Entitlements validation failed
          headers:
            X-CorrelationId:
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/list
                ServiceError:
                  metadata:
                    messages:
                      - code: 403-Forbidden
                        message: Entitlements Validation Failed
        '500':
          description: Unexpected server error
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations. 
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                TransactionTime: '2021-06-11T16:31:34.041Z'
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/list
                ServiceError:
                  metadata:
                    messages:
                    - code: 500-InternalServerError
                      message: An unexpected error occurred.  Please try again later or contact support if the problem persists.

  /accounts/transactions/v1/ach/settled/{settlementTransactionId}:
    get:
      operationId: searchAchSettledTransactions
      security:
        - bearerAuth: []
      tags:
        - ACH Transactions
      summary: Advanced search for settled ACH transactions
      description: Search for ACH batch details of transactions that have posted to the KeyBank account where the status is settled or returned.
      parameters:
        - name: X-CorrelationId
          in: header
          schema:
            type: string
          required: false
          description: Universal ID to trace the transaction across all systems involved.
        - name: settlementTransactionId
          in: path
          required: true
          description: The transaction ID that is assigned during settlement. This can be obtained from the Commercial Accounting API.
          schema:
            type: string
            maxLength: 50
          example: 23218003015954
        - name: pageNumber
          in: query
          description: The number of the page being viewed. This number must be greater than or equal to 1.
          schema:
            type: integer
            default: 1
            minimum: 1
          example: 1
        - name: pageSize
          in: query
          description: The number of records per page. Must be between 1 and 1000.
          schema:
            type: integer
            default: 1000
            minimum: 1
            maximum: 1000
          example: 150
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  transactions:
                    type: array
                    maxItems: 1000
                    description: List of transactions from search criteria.
                    items:
                      $ref: '#/components/schemas/AchSettledTransaction'
                  metadata:
                    allOf:
                      - $ref: '#/components/schemas/PageMetadata'
                    description: Information about the data pages returned.
              examples:
                settled:
                  summary: Settled Transaction
                  value:
                    transactions:
                      - parNumber: '22018007665985'
                        transactionStatus: SETTLED
                        traceNumber: '043000090716192'
                        transactionAmount: 10.01
                        collectionDate: '2021-03-07'
                        settlementDate: '2021-03-08'
                        transactionCode: '22'
                        transactionDescription: DEPOSIT
                        authorizedCustomerName: TEST CUSTOMER1
                        standardEntryClassCode: CCD
                        receivingAccount:
                          accountNumber: '123456789012'
                        receivingParty:
                          customerIdentificationNumber: '099999999'
                          companyName: 'MERCHANT'
                        originatingAccount:
                          accountNumber: '3123456789'
                        originatingParty:
                          customerIdentificationNumber: '1234567'
                          companyName: COMPANY NAME 1
                        settlementAmount: 123.45
                        settlementTransactionId: '23218003015954'
                    metadata:
                      page:
                        pageNumber: 1
                        pageSize: 10
                        totalPages: 3
                        totalRecords: 28
                        lastPage: false
                returned:
                  summary: Returned Transaction
                  value:
                    transactions:
                      - parNumber: '22018007665985'
                        transactionStatus: RETURNED
                        traceNumber: '043000090716192'
                        transactionAmount: 50.00
                        collectionDate: '2021-03-07'
                        settlementDate: '2021-03-08'
                        transactionCode: '26'
                        transactionDescription: CUST TRANS
                        authorizedCustomerName: TEST CUSTOMER2
                        standardEntryClassCode: CCD
                        receivingAccount:
                          accountNumber: '987654321098'
                        receivingParty:
                          customerIdentificationNumber: '088888888'
                          companyName: VENDOR
                        originatingAccount:
                          accountNumber: '3123456789'
                        originatingParty:
                          customerIdentificationNumber: '1234567'
                          companyName: COMPANY NAME 1
                        returnDate: '2021-03-08'
                        returnReasonCode: R01
                        returnReasonDescription: Insufficient Funds
                        settlementAmount: 50.00
                        settlementTransactionId: '23218003015954'
                    metadata:
                      page:
                        pageNumber: 3
                        pageSize: 10
                        totalPages: 3
                        totalRecords: 28
                        lastPage: true
        '400':
          description: Bad input parameter
          headers:
            X-CorrelationId:
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
              schema:
                type: string
          content:
            application/json:
              schema:
                type: object
                properties:
                  metadata:
                    allOf:
                      - $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/settled/22018007665985
                ServiceError:
                  metadata:
                    messages:
                      - code: AI-Settled-400-pageSize-115
                        message: pageSize must be less than or equal to 1000
        '404':
          description: No ACH transaction was found with the provided settlementTransactionId
          headers:
            X-CorrelationId:
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend service
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                TransactionTime: '2021-06-11T16:31:34.041Z'
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/settled/22018007665985
                ServiceError:
                  metadata:
                    messages:
                      - code: AI-Settled-404-no-records-100
                        message: Record Not Found
        '500':
          description: Unexpected server error
          headers:
            X-CorrelationId:
              schema:
                type: string
              description: A unique identifier generated for each transaction that remains with the transaction through the chain of API operations. 
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Exception'
              example:
                ErrorMessage: Error received from backend
                TransactionId: 84293235-5d2c-42ba-afc3-a5d4afc5f88e27097
                TransactionTime: '2021-06-11T16:31:34.041Z'
                X-CorrelationId: 929618f2-6163-bf73-51b0-6c54a8533c74
                Api-Url: https://partner-api-qv.key.com/accounts/transactions/v1/ach/settled/22018007665985
                ServiceError:
                  metadata:
                    messages:
                    - code: 500-InternalServerError
                      message: An unexpected error occurred.  Please try again later or contact support if the problem persists.

components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Access token supplied in the `Authorization` header using the `Bearer` scheme (e.g. `Authorization: Bearer {token}`).'
  schemas:
    AccountList:
      type: object
      description: Contains details about the account like account number.
      properties:
        accountNumber:
          type: string
          description: Bank account number.
          examples:
            - '3123456789'

    AccountDetail:
      type: object
      description: Contains details about the account like number, bank number, and routing number.
      properties:
        accountNumber:
          type: string
          description: Bank account number of the ACH originator or receiver.
          examples:
            - '3123456789'
        bankNumber:
          type: string
          description: Bank number associated with the account number.
          examples:
            - '0000'
        routingNumber:
          type: string
          description: Nine-digit routing number for the account provided in the original request.
          examples:
            - '123456789'

    AchDetailTransaction:
      type: object
      description: Contains transaction details associated with the queried parNumber.
      properties:
        parNumber:
          type: string
          description: The unique parNumber assigned to the transaction by the ACH processor.
          examples:
            - '22018007665985'
        transactionStatus:
          type: string
          description: 'The status of the ACH transaction. Valid values: COLLECTED, RETURNED, SETTLED'
          examples:
            - 'COLLECTED'
            - 'RETURNED'
            - 'SETTLED'
        traceNumber:
          type: string
          description: The trace number provided in the detail record of the originators Nacha file.
          examples:
            - '043000090716192'
        transactionAmount:
          type: number
          format: double
          description: The dollar amount of the transaction.
          examples:
            - 10.01
        collectionDate:
          type: string
          format: date
          description: 'The date the transaction collection occurred. Format: YYYY-MM-DD'
          examples:
            - '2024-02-11'
        settlementDate:
          type: string
          format: date
          description: 'The date the transaction settlement occurred. Format: YYYY-MM-DD'
          examples:
            - '2024-02-01'
        transactionCode:
          type: string
          description: Two-digit code identifying the account type at the receiving financial institution.  Defined by Nacha rules to indicate the type of transaction  based on the account.
          examples:
            - '22'
        transactionCodeDescription:
          type: string
          description: Description for the transaction code.
          examples:
            - 'Automated Deposit'
        transactionDescription:
          type: string
          description: Company Entry Description provided by the originator.  Defined by Nacha specifications as a batch level description.
          examples:
            - 'DEPOSIT'
        authorizedCustomerName:
          type: string
          description: Authorized customer name
          examples:
            - 'TEST CUSTOMER1'
        standardEntryClassCode:
          type: string
          description: The three-digit Standard Entry Class code based on Nacha rules.
          examples:
            - 'CCD'
        standardEntryClassDescription:
          type: string
          description: The description for the Nacha SEC code.
          examples:
            - 'Cash Concentration or Disbursement'
        receivingAccount:
          allOf:
            - $ref: '#/components/schemas/AccountDetail'
          description: Details about the account receiving the funds.
        receivingParty:
          allOf:
            - $ref: '#/components/schemas/PartyDetail'
          description: Details about the party receiving the funds.
        originatingAccount:
          allOf:
            - $ref: '#/components/schemas/AccountDetail'
          description: Details about the originating account.
        originatingParty:
          allOf:
            - $ref: '#/components/schemas/PartyDetail'
          description: Details about the originating party.
        returnDate:
          type: string
          format: date
          description: 'Date of the returned transaction to the ACH system. Format: YYYY-MM-DD'
          examples:
            - '2024-02-01'
        returnReasonCode:
          type: string
          description: 'The code associated with the reason for returning the ACH transaction. The code is the letter ''R'' for reason followed by a two-digit numeric code. Format: R00'
          examples:
            - 'R02'
        returnReasonDescription:
          type: string
          description: Description as to why the ACH transaction is returned.
          examples:
            - 'Account Closed'
        addendaCount:
          type: integer
          description: Count of addenda records.
          examples:
            - 1
        notificationOfChangeAddendaCount:
          type: integer
          description: Count of change notifications records.
          examples:
            - 0
        internationalAddendaCount:
          type: integer
          description: Count of international addenda records.
          examples:
            - 0
        customData:
          type: string
          description: >
            The values for custom data is defined by the client. This free-form text field
            can contain up to 500 alphanumeric characters. Custom information stays with
            the transaction through its lifecycle.
          examples:
            - merchant:status
        checkSerialNumber:
          type: string
          description: Serial number for the check converted to an ACH transaction.
          examples:
            - '4345'
        transactionDirection:
          type: string
          description: 'Indicates the direction of the transaction. Valid values: ORIGINATING ITEM, RECEIVING ITEM'
          examples:
            - 'ORIGINATING ITEM'
        settlementAmount:
          type: number
          format: double
          description: The dollar amount of the settlement.
          examples:
            - 123.45
        settlementTransactionId:
          type: string
          description: The unique settlementTransactionId of the settled batch tied to the transaction.
          examples:
            - '23218003015954'
        addenda:
          type: array
          maxItems: 1000
          description: List of addenda records
          items:
            $ref: '#/components/schemas/Addendum'
        notificationOfChange:
          type: array
          maxItems: 1000
          description: Applicable change notifications associated with the ACH transaction.
          items:
            $ref: '#/components/schemas/NotificationOfChange'

    AchListTransaction:
      type: object
      description: Results from ACH transaction account search.
      properties:
        parNumber:
          type: string
          description: The unique parNumber assigned to the transaction by the ACH processor.
          examples:
            - '22018007665985'
        transactionStatus:
          type: stri

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# Full source: https://raw.githubusercontent.com/api-evangelist/keycorp/refs/heads/main/openapi/keycorp-ach-inquiry-openapi.yml