Hashicorp Vault cli return 403 when trying to use kv

You can enable secret engine for specific path

vault secrets enable -path=kv kv

https://www.vaultproject.io/intro/getting-started/secrets-engines

This was a result of me not reading documentation.

The request was failing because there was no secret engine mounted at that path.

You can check your secret engine paths by running vault secrets list -detailed

This showed that my kv secret engine was mapped to path kv not secret as I was trying.

Therefore running vault kv put kv/my-secret my-value=yea worked as expected.