diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 495f357..a0514b3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,7 +1,11 @@
 name: Test
 
 on:
+  schedule:
+  # run once a month at midnight of the first day of the month
+  - cron: 0 0 1 * *
   workflow_call:
+  workflow_dispatch: # run manually from actions tab
 
 # Set permissions at the job level.
 permissions: {}
@@ -34,6 +38,9 @@ jobs:
       run: just cov
       env:
         TERM: dumb # keep rich from printing escape sequences, which made testing CLI outputs messy
+    - name: Run e2e tests
+      run: just e2e-test
+      if: matrix.python-version == '3.13'
     - name: Generate coverage report
       run: |
         export TOTAL_COV=$(hatch run cov-total)
diff --git a/justfile b/justfile
index 8f86dbd..bb38809 100644
--- a/justfile
+++ b/justfile
@@ -33,6 +33,10 @@ check: lint typecheck
 test:
     uv run pytest tests
 
+[group('test')]
+e2e-test:
+    uv run pytest -m e2e
+
 [group('test')]
 cov:
     uv run pytest --cov=src
diff --git a/pyproject.toml b/pyproject.toml
index 5b2892d..8601f4f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -170,6 +170,7 @@ addopts = [
   "--showlocals",
   "--strict-markers",
   "--strict-config",
+  "-m not e2e",       # default behaviour: do not run e2e tests
 ]
 asyncio_mode = "auto"
 filterwarnings = [
@@ -178,6 +179,9 @@ filterwarnings = [
 log_cli_level = "INFO"
 xfail_strict = true
 testpaths = "tests"
+markers = [
+  "e2e: marks tests as end-to-end tests, requesting the live api",
+]
 
 [tool.coverage.run] # Ref: https://coverage.readthedocs.io/en/latest/config.html
 branch = true
diff --git a/tests/e2e/test_live_api.py b/tests/e2e/test_live_api.py
new file mode 100644
index 0000000..0e08b50
--- /dev/null
+++ b/tests/e2e/test_live_api.py
@@ -0,0 +1,26 @@
+# SPDX-FileCopyrightText: 2025 Heinz-Alexander Fütterer
+#
+# SPDX-License-Identifier: MIT
+
+from __future__ import annotations
+
+import pytest
+
+import re3data
+from re3data._resources import Repository, RepositoryName, RepositorySummary
+
+pytestmark = pytest.mark.e2e
+
+
+def test_get_single_repository(zenodo_id: str) -> None:
+    response = re3data.repositories.get(zenodo_id)
+    assert isinstance(response, Repository)
+    assert response.id == zenodo_id
+    assert isinstance(response.repository_name, RepositoryName)
+    assert response.repository_name.value == "Zenodo"
+
+
+def test_list_repositories_query_string() -> None:
+    response = re3data.repositories.list(query="biosharing")
+    assert isinstance(response, list)
+    assert isinstance(response[0], RepositorySummary)