diff --git a/README.rst b/README.rst
index 8d66ffd5..b5f92163 100644
--- a/README.rst
+++ b/README.rst
@@ -17,21 +17,6 @@ This is tested on Python 3.12+.
 Usage
 -----
 
-.. invisible-code-block: python
-
-   from mock_vws import MockVWS
-   from mock_vws.database import VuforiaDatabase
-
-   mock = MockVWS(real_http=False)
-   database = VuforiaDatabase(
-       server_access_key='my_access_key',
-       server_secret_key='my_secret_key',
-       client_access_key='my_access_key',
-       client_secret_key='my_secret_key',
-   )
-   mock.add_database(database=database)
-   mock.__enter__()
-
 .. code-block:: python
 
    from urllib.parse import urljoin
@@ -44,8 +29,8 @@ Usage
    method = 'GET'
    date = rfc_1123_date()
    authorization_header = authorization_header(
-       access_key='my_access_key',
-       secret_key='my_secret_key',
+       access_key='[server-access-key]',
+       secret_key='[server-secret-key]',
        method=method,
        content=content,
        content_type='',
@@ -64,10 +49,6 @@ Usage
 
    assert response.status_code == 200, response.text
 
-.. invisible-code-block: python
-
-   mock.__exit__()
-
 Full Documentation
 ------------------
 
diff --git a/conftest.py b/conftest.py
index 4d4d8fb0..49995e9e 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1,9 +1,12 @@
-"""Setup for Sybil."""
+"""Setup for test suite."""
 
+from collections.abc import Generator
 from doctest import ELLIPSIS
 
 import pytest
 from beartype import beartype
+from mock_vws import MockVWS
+from mock_vws.database import VuforiaDatabase
 from sybil import Sybil
 from sybil.parsers.rest import (
     CaptureParser,
@@ -11,6 +14,26 @@
     PythonCodeBlockParser,
 )
 
+
+@pytest.fixture
+def mock_vws() -> Generator[None, None, None]:
+    """
+    Yield a mock VWS.
+
+    The keys used here match the keys in the documentation.
+    """
+    database = VuforiaDatabase(
+        server_access_key="[server-access-key]",
+        server_secret_key="[server-secret-key]",
+        client_access_key="[client-access-key]",
+        client_secret_key="[client-secret-key]",
+    )
+    # We use a low processing time so that tests run quickly.
+    with MockVWS(processing_time_seconds=0.2) as mock:
+        mock.add_database(database=database)
+        yield
+
+
 sybil_obj = Sybil(
     parsers=[
         DocTestParser(optionflags=ELLIPSIS),
@@ -18,6 +41,7 @@
         CaptureParser(),
     ],
     patterns=["*.rst", "*.py"],
+    fixtures=["mock_vws"],
 )
 
 pytest_collect_file = sybil_obj.pytest()
diff --git a/docs/source/index.rst b/docs/source/index.rst
index eb248dec..9f7e1a5e 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -13,21 +13,6 @@ This is tested on Python 3.12+.
 Example usage
 -------------
 
-.. invisible-code-block: python
-
-   from mock_vws import MockVWS
-   from mock_vws.database import VuforiaDatabase
-
-   mock = MockVWS(real_http=False)
-   database = VuforiaDatabase(
-       server_access_key='my_access_key',
-       server_secret_key='my_secret_key',
-       client_access_key='my_access_key',
-       client_secret_key='my_secret_key',
-   )
-   mock.add_database(database=database)
-   mock.__enter__()
-
 .. code-block:: python
 
    from urllib.parse import urljoin
@@ -40,8 +25,8 @@ Example usage
    method = 'GET'
    date = rfc_1123_date()
    authorization_header = authorization_header(
-       access_key='my_access_key',
-       secret_key='my_secret_key',
+       access_key='[server-access-key]',
+       secret_key='[server-secret-key]',
        method=method,
        content=content,
        content_type='',
@@ -60,10 +45,6 @@ Example usage
 
    assert response.status_code == 200, response.text
 
-.. invisible-code-block: python
-
-   mock.__exit__()
-
 Reference
 ---------
 
diff --git a/pyproject.toml b/pyproject.toml
index 3484780c..d6091550 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -102,6 +102,11 @@ lint.ignore = [
     "S101",
 ]
 
+lint.per-file-ignores."conftest.py" = [
+    # Allow hardcoded secrets in tests.
+    "S106",
+]
+
 # Do not automatically remove commented out code.
 # We comment out code during development, and with VSCode auto-save, this code
 # is sometimes annoyingly removed.