Which HTTP method does the Vault API primarily use for write operations?

The Vault API primarily uses the POST method for write operations due to its design and intended HTTP semantics. When making a request to create new resources or to modify existing ones, POST is generally the appropriate method since it is used to submit data to be processed to a specified resource. In the context of the Vault API, this means that when you are adding, modifying, or creating secrets, policies, or other configurations, you typically send your data using a POST request.

The POST method is particularly useful for operations where you may not know the specific identifier from the outset, such as when creating a new secret where the server generates a unique identifier. Additionally, POST requests can often include a body, which is essential for transmitting the necessary data for write operations.

In contrast, while methods like PUT can also be used for updates, it is more common in the Vault API to utilize POST for creating and updating resources, aligning with RESTful practices for resource manipulation. This makes POST the primary choice for write operations in the context of the Vault API.