Need help with your APIs? I offer API discovery, governance & evangelism services. Explore services →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Abound W-9 API

The W-9 API from Abound — 2 operation(s) for w-9.

Abound W-9 API is one of 13 APIs that Abound publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include W-9. The published artifact set on APIs.io includes an OpenAPI specification and an AsyncAPI specification.

This API exposes 3 operations across 2 paths, and defines 26 schemas. It is described by OpenAPI 3.1.0, at version 4.

Requests are made against 2 base URLs: https://production-api.withabound.com, https://sandbox-api.withabound.com.

3 operations 2 paths 26 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
4
Base URL
https://production-api.withabound.com
Authentication
HTTP Bearer
Resource Areas
1

Authentication & Security 1

Abound W-9 API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). By default, every request must be authenticated.

  • bearerAuth — Bearer token. The token is the concatenation of your Abound appId and appSecret separated by a period, e.g. appIdxxx.appSecretyyy.

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

W-9 3
GET
/v4/documents/w-9
List all W-9 documents
formW9List 4 params → 200400401404500
POST
/v4/documents/w-9
Create a W-9
formW9Create 1 param body → 200400401404500
GET
/v4/documents/w-9/{documentId}
Retrieve a W-9
formW9Retrieve 1 param → 200400401404500

Schemas 26

The contract defines 26 schemas that model the data the API accepts and returns. The most detailed are W9FormFieldsSchema (9 properties), W9Schema (7 properties), AddressSchema (6 properties), W9RequestSchema (4 properties). Each schema is shown below with its type and property counts.

IdempotencyKey
string
The unique key used to identify a request that has already been processed.
PayerRequestSchema
The payer of the document.
Page
integer
The specific page of results you're requesting. Responses are limited to a maximum of 100 records.
TinTypeEnum
string
The type of the TIN. INDIVIDUAL refers to SSNs, ITINs, or ATINs. While BUSINESS refers to EINs.
ElectronicSignatureOfPayeeSchema
object
The electronic signature of the payee.
4 properties 4 required
TinFingerprint
string
Your unique token that points to a TIN.
W9FormFieldsSchema
object
9 properties 1 required
PayerSchema
The payer of the document.
ErrorBadRequestSchema
object
1 property 1 required
UserId
string
The unique identifier for a single end-user of your application.
TinVerificationStatusEnum
string
The status of the TIN Verification.
W9ExemptFatcaCodeSchema
string
The code to identify a payee that is exempt from reporting under FATCA.
PayeeSchema
The payee of the document.
W9TaxClassificationSchema
string
The U.S. federal tax classification of the person.
AddressSchema
object
6 properties 2 required
DocumentId
string
The unique identifier for an existing document.
PayeeTinFingerprint
string
Filters the list of documents based on the payee.tinFingerprint field.
PayerTinFingerprint
string
Filters the list of documents based on the payer.tinFingerprint field.
W9Schema
object
7 properties 5 required
PayeeRequestSchema
The payee of the document.
DefaultErrorSchema
object
1 property 1 required
TinVerificationId
string
The unique identifier for the TIN Verification.
W9RequestSchema
object
4 properties 2 required
W9ExemptPayeeCodeSchema
string
The code to identify a payee that is exempt from backup withholding.
PayeeWithOptionalTinTypeRequestSchema
The payee of the document.
ErrorBadRequestSchemaErrorsItem
object
2 properties 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

abound-w-9-api-openapi.yml Raw ↑

Other APIs Abound publishes across the network.

Abound 1099-INT API
Abound 1099-K API
Abound 1099-MISC API
Abound 1099-NEC API
Abound Access Tokens API
Abound Electronic Delivery Consents API
Abound Mailings API
Abound Tax Treaties API
Abound TIN Verifications API
Abound Users API
Abound W-8BEN API
Abound W-8BEN-E API