Abound · AsyncAPI Specification
Abound API v4 - Webhooks
Version 4
The Abound webhook event surface: 44 HMAC-signed events covering Users, TIN Verifications, Mailings, Form 1099-INT/K/MISC/NEC and Forms W-9, W-8BEN and W-8BEN-E. Derived from the first-party Fern API Definition shipped in @withabound/node-sdk@6.0.68. Abound is retired and no longer delivers events.
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CompanyTaxesTax ComplianceRegulatory ComplianceFinancial ServicesIdentity VerificationGovernmentDocumentsWebhooksRetiredAsyncAPIWebhooksEvents
Channels
MAILING_CREATED
Receive a notification when a Mailing is created
MAILING_DELETED
Receive a notification when a Mailing is deleted
MAILING_DELIVERED
Receive a notification when a Mailing status changes to `DELIVERED`
MAILING_IN_TRANSIT
Receive a notification when a Mailing status changes to `IN_TRANSIT`
MAILING_PROCESSING_FOR_DELIVERY
Receive a notification when a Mailing status changes to `PROCESSING_FOR_DELIVERY`
MAILING_RETURNED_TO_SENDER
Receive a notification when a Mailing status changes to `RETURNED_TO_SENDER`
MAILING_UPDATED
Receive a notification when a Mailing is updated
TEN99_INT_ACCEPTED
Receive a notification when a Form 1099-INT status changes to `ACCEPTED`
TEN99_INT_CORRECTED
Receive a notification when a Form 1099-INT is corrected.
TEN99_INT_CREATED
Receive a notification when a Form 1099-INT is created
TEN99_INT_DELETED
Receive a notification when a Form 1099-INT is deleted
TEN99_INT_FILED
Receive a notification when a Form 1099-INT is filed
TEN99_INT_REJECTED
Receive a notification when a Form 1099-INT is rejected
TEN99_INT_VOIDED
Receive a notification when a Form 1099-INT is voided
TEN99_K_ACCEPTED
Receive a notification when a Form 1099-K status changes to `ACCEPTED`
TEN99_K_CORRECTED
Receive a notification when a Form 1099-K is corrected.
TEN99_K_CREATED
Receive a notification when a Form 1099-K is created
TEN99_K_DELETED
Receive a notification when a Form 1099-K is deleted
TEN99_K_FILED
Receive a notification when a Form 1099-K is filed
TEN99_K_REJECTED
Receive a notification when a Form 1099-K is rejected
TEN99_K_VOIDED
Receive a notification when a Form 1099-K is voided
TEN99_MISC_ACCEPTED
Receive a notification when a Form 1099-MISC status changes to `ACCEPTED`
TEN99_MISC_CORRECTED
Receive a notification when a Form 1099-MISC is corrected.
TEN99_MISC_CREATED
Receive a notification when a Form 1099-MISC is created
TEN99_MISC_DELETED
Receive a notification when a Form 1099-MISC is deleted
TEN99_MISC_FILED
Receive a notification when a Form 1099-MISC is filed
TEN99_MISC_REJECTED
Receive a notification when a Form 1099-MISC is rejected
TEN99_MISC_VOIDED
Receive a notification when a Form 1099-MISC is voided
TEN99_NEC_ACCEPTED
Receive a notification when a Form 1099-NEC status changes to `ACCEPTED`
TEN99_NEC_CORRECTED
Receive a notification when a Form 1099-NEC is corrected.
TEN99_NEC_CREATED
Receive a notification when a Form 1099-NEC is created
TEN99_NEC_DELETED
Receive a notification when a Form 1099-NEC is deleted
TEN99_NEC_FILED
Receive a notification when a Form 1099-NEC is filed
TEN99_NEC_REJECTED
Receive a notification when a Form 1099-NEC is rejected
TEN99_NEC_VOIDED
Receive a notification when a Form 1099-NEC is voided
TIN_VERIFICATION_CREATED
Receive a notification when a TIN Verification is created
TIN_VERIFICATION_MATCH
Receive a notification when a TIN Verification status changes to `MATCH`
TIN_VERIFICATION_MISMATCH
Receive a notification when a TIN Verification status changes to `MISMATCH`
TIN_VERIFICATION_PENDING
Receive a notification when a TIN Verification status changes to `PENDING`
USER_CREATED
Receive a notification when a User is created
USER_UPDATED
Receive a notification when a User is updated
W_8BEN_CREATED
Receive a notification when a Form W-8BEN is created
W_8BEN_E_CREATED
Receive a notification when a Form W-8BEN-E is created
W_9_CREATED
Receive a notification when a Form W-9 is created
Messages
messageMailingCreated
MAILING_CREATED
Receive a notification when a Mailing is created
messageMailingDeleted
MAILING_DELETED
Receive a notification when a Mailing is deleted
messageMailingDelivered
MAILING_DELIVERED
Receive a notification when a Mailing status changes to `DELIVERED`
messageMailingInTransit
MAILING_IN_TRANSIT
Receive a notification when a Mailing status changes to `IN_TRANSIT`
messageMailingProcessingForDelivery
MAILING_PROCESSING_FOR_DELIVERY
Receive a notification when a Mailing status changes to `PROCESSING_FOR_DELIVERY`
messageMailingReturnedToSender
MAILING_RETURNED_TO_SENDER
Receive a notification when a Mailing status changes to `RETURNED_TO_SENDER`
messageMailingUpdated
MAILING_UPDATED
Receive a notification when a Mailing is updated
messageTen99IntAccepted
TEN99_INT_ACCEPTED
Receive a notification when a Form 1099-INT status changes to `ACCEPTED`
messageTen99IntCorrected
TEN99_INT_CORRECTED
Receive a notification when a Form 1099-INT is corrected.
messageTen99IntCreated
TEN99_INT_CREATED
Receive a notification when a Form 1099-INT is created
messageTen99IntDeleted
TEN99_INT_DELETED
Receive a notification when a Form 1099-INT is deleted
messageTen99IntFiled
TEN99_INT_FILED
Receive a notification when a Form 1099-INT is filed
messageTen99IntRejected
TEN99_INT_REJECTED
Receive a notification when a Form 1099-INT is rejected
messageTen99IntVoided
TEN99_INT_VOIDED
Receive a notification when a Form 1099-INT is voided
messageTen99KAccepted
TEN99_K_ACCEPTED
Receive a notification when a Form 1099-K status changes to `ACCEPTED`
messageTen99KCorrected
TEN99_K_CORRECTED
Receive a notification when a Form 1099-K is corrected.
messageTen99KCreated
TEN99_K_CREATED
Receive a notification when a Form 1099-K is created
messageTen99KDeleted
TEN99_K_DELETED
Receive a notification when a Form 1099-K is deleted
messageTen99KFiled
TEN99_K_FILED
Receive a notification when a Form 1099-K is filed
messageTen99KRejected
TEN99_K_REJECTED
Receive a notification when a Form 1099-K is rejected
messageTen99KVoided
TEN99_K_VOIDED
Receive a notification when a Form 1099-K is voided
messageTen99MiscAccepted
TEN99_MISC_ACCEPTED
Receive a notification when a Form 1099-MISC status changes to `ACCEPTED`
messageTen99MiscCorrected
TEN99_MISC_CORRECTED
Receive a notification when a Form 1099-MISC is corrected.
messageTen99MiscCreated
TEN99_MISC_CREATED
Receive a notification when a Form 1099-MISC is created
messageTen99MiscDeleted
TEN99_MISC_DELETED
Receive a notification when a Form 1099-MISC is deleted
messageTen99MiscFiled
TEN99_MISC_FILED
Receive a notification when a Form 1099-MISC is filed
messageTen99MiscRejected
TEN99_MISC_REJECTED
Receive a notification when a Form 1099-MISC is rejected
messageTen99MiscVoided
TEN99_MISC_VOIDED
Receive a notification when a Form 1099-MISC is voided
messageTen99NecAccepted
TEN99_NEC_ACCEPTED
Receive a notification when a Form 1099-NEC status changes to `ACCEPTED`
messageTen99NecCorrected
TEN99_NEC_CORRECTED
Receive a notification when a Form 1099-NEC is corrected.
messageTen99NecCreated
TEN99_NEC_CREATED
Receive a notification when a Form 1099-NEC is created
messageTen99NecDeleted
TEN99_NEC_DELETED
Receive a notification when a Form 1099-NEC is deleted
messageTen99NecFiled
TEN99_NEC_FILED
Receive a notification when a Form 1099-NEC is filed
messageTen99NecRejected
TEN99_NEC_REJECTED
Receive a notification when a Form 1099-NEC is rejected
messageTen99NecVoided
TEN99_NEC_VOIDED
Receive a notification when a Form 1099-NEC is voided
messageTinVerificationCreated
TIN_VERIFICATION_CREATED
Receive a notification when a TIN Verification is created
messageTinVerificationMatch
TIN_VERIFICATION_MATCH
Receive a notification when a TIN Verification status changes to `MATCH`
messageTinVerificationMismatch
TIN_VERIFICATION_MISMATCH
Receive a notification when a TIN Verification status changes to `MISMATCH`
messageTinVerificationPending
TIN_VERIFICATION_PENDING
Receive a notification when a TIN Verification status changes to `PENDING`
messageUserCreated
USER_CREATED
Receive a notification when a User is created
messageUserUpdated
USER_UPDATED
Receive a notification when a User is updated
messageW8benCreated
W_8BEN_CREATED
Receive a notification when a Form W-8BEN is created
messageW8benECreated
W_8BEN_E_CREATED
Receive a notification when a Form W-8BEN-E is created
messageW9Created
W_9_CREATED
Receive a notification when a Form W-9 is created
Servers
https
subscriber
Abound POSTs each event to the HTTPS endpoint you register. Verify the Abound-Signature HMAC header before trusting the payload.