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The hvac library is the standard Python client for HashiCorp Vault, and it works fully with OpenBao because OpenBao preserves the Vault API. This page shows how to authenticate, read, write, and list secrets using hvac.


1. Install the HVAC client

NOTE: you should use a an environment before installing packages, for example with uv or virtualenv.

pip install hvac

2. Download your token from the OpenBao UI


In the OpenBao UI:


  1. Log in EWC Secret Manager - Accessing the system

  2. Copy token from your profile

  3. Save it securely in your machine (e.g., ~/.openbao-token).


 

3. Connect to OpenBao using the downloaded token

import hvac

# Read the token you downloaded from the UI
with open("/home/francesco/.openbao-token") as f:
    token = f.read().strip()

client = hvac.Client(
    url="https://secrets.europeanweather.cloud",
    token=token,
	namespace="my-tenancy",
    verify=True
)

print("Authenticated:", client.is_authenticated())


4. Write a secret (KV v2)

client.secrets.kv.v2.create_or_update_secret(
    path="myapp/config",
    secret={
        "username": "service",
        "password": "example"
    }
)

5. Read a secret


result = client.secrets.kv.v2.read_secret_version(
    path="myapp/config"
)

print(result["data"]["data"])


6. List secrets


client.secrets.kv.v2.list_secrets(path="myapp/")


7. Delete a secret


client.secrets.kv.v2.delete_metadata_and_all_versions(
    path="myapp/config"
)


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