Avalara W-9 Forms API
Collect and manage W-9 forms
Avalara W-9 Forms API is one of 73 APIs that Avalara publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.
Tagged areas include W-9 Forms. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an AsyncAPI specification.
This API exposes 3 operations across 2 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 1.0.
Requests are made against 2 base URLs: https://api.avalara.com/1099/v1, https://api.sbx.avalara.com/1099/v1.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Avalara W-9 Forms API declares
1 security scheme
for authenticating requests.
It accepts HTTP bearer tokens (bearerAuth).
By default, every request must be authenticated.
bearerAuth— OAuth 2.0 bearer token
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.
Collect and manage W-9 forms
Schemas 4
The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are W9Form (9 properties), W9Request (5 properties), W9RequestResponse (5 properties), ErrorResponse (1 property). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Avalara 12
Other APIs Avalara publishes across the network.
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