diff --git a/config.ini b/config.ini
index a3ad55f..499871a 100644
--- a/config.ini
+++ b/config.ini
@@ -6,4 +6,3 @@ CANDIG_KATSU_URL = <KATSU_URL>
 
 [authz]
 CANDIG_OPA_URL = <OPA_URL>
-CANDIG_VAULT_URL = <VAULT_URL>
diff --git a/entrypoint.sh b/entrypoint.sh
index 0c701ad..49d79d5 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -3,6 +3,7 @@
 if [[ -f "initial_setup" ]]; then
     sed -i s@\<HTSGET_URL\>@$CANDIG_HTSGET_URL@ config.ini
     sed -i s@\<KATSU_URL\>@$CANDIG_KATSU_URL@ config.ini
+    sed -i s@\<OPA_URL\>@$OPA_URL@ config.ini
 
     rm initial_setup
 fi
diff --git a/query_server/config.py b/query_server/config.py
index 7b92f8d..82c83c2 100644
--- a/query_server/config.py
+++ b/query_server/config.py
@@ -13,6 +13,7 @@
 
 HTSGET_URL = config['DEFAULT']['CANDIG_HTSGET_URL']
 KATSU_URL = config['DEFAULT']['CANDIG_KATSU_URL']
+OPA_URL = config['authz']['CANDIG_OPA_URL']
 
 DEBUG_MODE = False
 if os.getenv("DEBUG_MODE", "1") == "1":
diff --git a/query_server/openapi.yaml b/query_server/openapi.yaml
index f1b8473..4ab001b 100644
--- a/query_server/openapi.yaml
+++ b/query_server/openapi.yaml
@@ -105,6 +105,20 @@ paths:
                                 $ref: '#/components/schemas/DiscoveryProgramBody'
                 5XX:
                     $ref: "#/components/responses/5xxServerError"
+    /whoami:
+        get:
+            summary: Retrieve the user key (usually the email) for the currently logged-in user
+            description: Retrieve the user key (usually the email) for the currently logged-in user
+            operationId: query_operations.whoami
+            responses:
+                200:
+                    description: User info
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/UserInfo'
+                5XX:
+                    $ref: "#/components/responses/5xxServerError"
                     
 components:
     parameters:
@@ -254,6 +268,13 @@ components:
                 programs:
                     type: array
                     description: Per-program summary statistics
+        UserInfo:
+            type: object
+            description: Information about a user
+            properties:
+                key:
+                    type: string
+                    description: The user key associated with this user. Usually an email
         # ERROR SCHEMAS
         Error:
             type: object
diff --git a/query_server/query_operations.py b/query_server/query_operations.py
index 833a4b6..cab8fb3 100644
--- a/query_server/query_operations.py
+++ b/query_server/query_operations.py
@@ -4,6 +4,7 @@
 import requests
 import secrets
 import urllib
+from authx.auth import get_user_id, get_auth_token
 
 import config
 
@@ -490,3 +491,24 @@ def discovery_query(treatment="", primary_site="", chemotherapy="", immunotherap
     summary_stats = censor_response(summary_stats)
 
     return fix_dicts(summary_stats), 200
+
+@app.route('/whoami')
+def whoami():
+    # Grab information about the currently logged-in user
+    print(config.OPA_URL)
+    print(config.AUTHZ)
+    token = get_auth_token(request)
+    headers = {
+        "Authorization": f"Bearer {token}"
+    }
+    response = requests.post(
+        config.OPA_URL + f"/v1/data/idp/user_key",
+        headers=headers,
+        json={
+            "input": {
+                    "token": token
+                }
+            }
+        )
+    print(response)
+    return { 'key': get_user_id(request, opa_url = config.OPA_URL) }