Vault does not attempt to offer feature parity with its web UI. This is by design.
The nature of Vault and machine authentication generally leads to a design approach where new features are developed with a priority assumption: customers will manage them through automation tools like Terraform, or using in-house scripts.
We regularly update & add improvements and features to Vault's web UI, so it is always worth taking a look at Vault's Release Notes, as well as the Changelog.
- Take a look at HashiCorp's Tutorials page, to see whether there exists any detailed guides on feature implementation not already covered in the previously mentioned API/CLI documentation.