diff --git a/quarry/default_config.yaml b/quarry/default_config.yaml
index 90cc3b0..e6ba685 100644
--- a/quarry/default_config.yaml
+++ b/quarry/default_config.yaml
@@ -30,8 +30,13 @@ worker_prefetch_multiplier: 1 # Tasks can run for a long time
 REPLICA_DOMAIN: ''  # Change to `analytics.db.svc.wikimedia.cloud` for live replicas
 REPLICA_USER: 'repl'  # For live replicas, your replica.my.cnf username
 REPLICA_PASSWORD: 'repl'  # For live replicas, your replica.my.cnf password
-
 REPLICA_PORT: 3306
+
+TOOLS_DB_HOST: 'tools.db.svc.wikimedia.cloud'
+TOOLS_DB_PORT: 3306
+TOOLS_DB_USER: ''
+TOOLS_DB_PASSWORD: ''
+
 OUTPUT_PATH_TEMPLATE: '/results/%s/%s/%s.sqlite'
 REDIS_HOST: 'redis'
 REDIS_PORT: 6379
diff --git a/quarry/web/replica.py b/quarry/web/replica.py
index 9c2450a..34ee67f 100644
--- a/quarry/web/replica.py
+++ b/quarry/web/replica.py
@@ -10,16 +10,18 @@ class Replica:
     def __init__(self, config):
         self.config = config
         self.dbname = ""
+        self.is_tools_db = False
 
     def _db_name_mangler(self):
         if self.dbname == "":
             raise ReplicaConnectionException(
                 "Attempting connection before a database is selected"
             )
-
-        if self.dbname == "meta" or self.dbname == "meta_p":
+        if "__" in self.dbname and self.dbname.endswith("_p"):
+            self.is_tools_db = True
+            self.database_p = self.dbname
+        elif self.dbname == "meta" or self.dbname == "meta_p":
             self.database_name = "s7"
-
             self.database_p = "meta_p"
         elif self.dbname == "centralauth" or self.dbname == "centralauth_p":
             self.database_name = "s7"
@@ -36,6 +38,13 @@ def _db_name_mangler(self):
                 else "{}_p".format(self.dbname)
             )
 
+    def get_host_name(self):
+        if self.is_tools_db:
+            return self.config["TOOLS_DB_HOST"]
+        if self.config["REPLICA_DOMAIN"]:
+            return f"{self.database_name}.{self.config['REPLICA_DOMAIN']}"
+        return self.database_name
+
     @property
     def connection(self):
         self._replica.ping(reconnect=True)
@@ -52,22 +61,20 @@ def connection(self, db):
 
         self.dbname = db
         self._db_name_mangler()
-        repl_host = (
-            f"{self.database_name}.{self.config['REPLICA_DOMAIN']}"
-            if self.config["REPLICA_DOMAIN"]
-            else self.database_name
-        )
+        host = self.get_host_name()
+        conf_prefix = "TOOLS_DB" if self.is_tools_db else "REPLICA"
+        port = self.config[f"{conf_prefix}_PORT"]
         connect_opts = {
             "db": self.database_p,
-            "user": self.config["REPLICA_USER"],
-            "passwd": self.config["REPLICA_PASSWORD"],
+            "user": self.config[f"{conf_prefix}_USER"],
+            "passwd": self.config[f"{conf_prefix}_PASSWORD"],
             "charset": "utf8",
             "client_flag": pymysql.constants.CLIENT.MULTI_STATEMENTS,
         }
 
         if not self.config.get("REPLICA_SOCKS5_PROXY_HOST"):
             self._replica = pymysql.connect(
-                host=repl_host, port=self.config["REPLICA_PORT"], **connect_opts
+                host=host, port=port, **connect_opts
             )
         else:
             self._replica = pymysql.connect(defer_connect=True, **connect_opts)
@@ -78,7 +85,7 @@ def connection(self, db):
                 addr=self.config["REPLICA_SOCKS5_PROXY_HOST"],
                 port=self.config["REPLICA_SOCKS5_PROXY_PORT"],
             )
-            sock.connect((repl_host, self.config["REPLICA_PORT"]))
+            sock.connect((host, port))
             self._replica.connect(sock=sock)
 
     @connection.deleter
diff --git a/quarry/web/utils/__init__.py b/quarry/web/utils/__init__.py
index ea68d94..28f1859 100644
--- a/quarry/web/utils/__init__.py
+++ b/quarry/web/utils/__init__.py
@@ -2,7 +2,7 @@
 
 
 VALID_DB_NAMES = re.compile(
-    r"^(?:(?:(?:centralauth|meta|[0-9a-z_]*wik[a-z]+)(?:_p)?)|quarry)$"
+    r"^(?:(?:(?:centralauth|meta|[0-9a-z_]*wik[a-z]+)(?:_p)?)|quarry|s\d+__\w+_p)$"
 )