diff --git a/api/server.py b/api/server.py
index 955193fc..386fd5f1 100755
--- a/api/server.py
+++ b/api/server.py
@@ -71,6 +71,18 @@ async def status() -> Dict:
     babel_version = os.environ.get("BABEL_VERSION", "unknown")
     babel_version_url = os.environ.get("BABEL_VERSION_URL", "")
 
+    # Look up the BIOLINK_MODEL_TAG.
+    # Note: this should be a tag from the Biolink Model repo, e.g. "master" or "v4.3.6".
+    biolink_model_tag = os.environ.get("BIOLINK_MODEL_TAG", "master")
+    biolink_model_url = f"https://github.com/biolink/biolink-model/tree/{biolink_model_tag}"
+    biolink_model_download_url = f"https://raw.githubusercontent.com/biolink/biolink-model/{biolink_model_tag}/biolink-model.yaml"
+
+    # Figure out the NameRes version.
+    nameres_version = "master"
+    app_info = get_app_info()
+    if 'version' in app_info and app_info['version']:
+        nameres_version = 'v' + app_info['version']
+
     # We should have a status for name_lookup_shard1_replica_n1.
     if 'status' in result and 'name_lookup_shard1_replica_n1' in result['status']:
         core = result['status']['name_lookup_shard1_replica_n1']
@@ -84,6 +96,12 @@ async def status() -> Dict:
             'message': 'Reporting results from primary core.',
             'babel_version': babel_version,
             'babel_version_url': babel_version_url,
+            'biolink_model': {
+                'tag': biolink_model_tag,
+                'url': biolink_model_url,
+                'download_url': biolink_model_download_url,
+            },
+            'nameres_version': nameres_version,
             'startTime': core['startTime'],
             'numDocs': index.get('numDocs', ''),
             'maxDoc': index.get('maxDoc', ''),
@@ -96,7 +114,15 @@ async def status() -> Dict:
     else:
         return {
             'status': 'error',
-            'message': 'Expected core not found.'
+            'message': 'Expected core not found.',
+            'babel_version': babel_version,
+            'babel_version_url': babel_version_url,
+            'biolink_model': {
+                'tag': biolink_model_tag,
+                'url': biolink_model_url,
+                'download_url': biolink_model_download_url,
+            },
+            'nameres_version': nameres_version,
         }
 
 
diff --git a/documentation/API.md b/documentation/API.md
index fc0703a3..57bcbdea 100644
--- a/documentation/API.md
+++ b/documentation/API.md
@@ -310,6 +310,9 @@ POST /synonyms with body:
 
 Returns the status of the service. Most importantly, this returns the [Babel](https://github.com/NCATSTranslator/Babel)
 version and changelog URL, which can be used to determine which version of Babel is currently loaded in this service.
+It also includes the NameRes version (also visible in the OpenAPI documentation)
+and the Biolink Model version used to build the Solr database, as well as bunch of information from the underlying
+Solr database.
 
 ```json
 {
@@ -317,6 +320,12 @@ version and changelog URL, which can be used to determine which version of Babel
   "message": "Reporting results from primary core.",
   "babel_version": "2025sep1",
   "babel_version_url": "https://github.com/ncatstranslator/Babel/blob/master/releases/2025sep1.md",
+  "biolink_model": {
+    "tag": "v4.2.6-rc5",
+    "url": "https://github.com/biolink/biolink-model/tree/v4.2.6-rc5",
+    "download_url": "https://raw.githubusercontent.com/biolink/biolink-model/v4.2.6-rc5/biolink-model.yaml"
+  },
+  "nameres_version": "v1.5.1",
   "startTime": "2025-12-19T11:53:09.638Z",
   "numDocs": 425583391,
   "maxDoc": 425586610,
diff --git a/tests/test_status.py b/tests/test_status.py
new file mode 100644
index 00000000..b48ddc07
--- /dev/null
+++ b/tests/test_status.py
@@ -0,0 +1,29 @@
+import logging
+
+from api.server import app
+from fastapi.testclient import TestClient
+
+# Turn on debugging for tests.
+logging.basicConfig(level=logging.DEBUG)
+
+def test_status():
+    client = TestClient(app)
+    response = client.get("/status")
+    status = response.json()
+
+    assert status['status'] == 'ok'
+    assert status['message'] != ''
+    assert 'babel_version' in status
+    assert 'babel_version_url' in status
+    assert 'biolink_model' in status
+    assert 'tag' in status['biolink_model']
+    assert 'nameres_version' in status
+    assert status['version'] > 1
+    assert status['size'] != ''
+    assert status['startTime']
+
+    # Count the specific number of test documents we load.
+    assert status['numDocs'] == 89
+    assert status['maxDoc'] == 89
+    assert status['deletedDocs'] == 0
+