diff --git a/daemon.py b/daemon.py
index 5d5a1b72c..87a0730d4 100644
--- a/daemon.py
+++ b/daemon.py
@@ -13983,7 +13983,8 @@ class PubServer(BaseHTTPRequestHandler):
                                    self.server.blocked_cache_last_updated,
                                    self.server.base_dir,
                                    self.server.blocked_cache,
-                                   self.server.blocked_cache_update_secs)
+                                   self.server.blocked_cache_update_secs,
+                                   self.server.crawlers_allowed)
             if block:
                 self._400()
                 return
@@ -18524,7 +18525,8 @@ class PubServer(BaseHTTPRequestHandler):
                                self.server.blocked_cache_last_updated,
                                self.server.base_dir,
                                self.server.blocked_cache,
-                               self.server.blocked_cache_update_secs)
+                               self.server.blocked_cache_update_secs,
+                               self.server.crawlers_allowed)
         if block:
             self._400()
             self.server.postreq_busy = False
@@ -19457,7 +19459,8 @@ def load_tokens(base_dir: str, tokens_dict: {}, tokens_lookup: {}) -> None:
         break
 
 
-def run_daemon(dyslexic_font: bool,
+def run_daemon(crawlers_allowed: [],
+               dyslexic_font: bool,
                content_license_url: str,
                lists_enabled: str,
                default_reply_interval_hrs: int,
@@ -19636,6 +19639,9 @@ def run_daemon(dyslexic_font: bool,
     # list of blocked user agent types within the User-Agent header
     httpd.user_agents_blocked = user_agents_blocked
 
+    # list of crawler bots permitted within the User-Agent header
+    httpd.crawlers_allowed = crawlers_allowed
+
     httpd.unit_test = unit_test
     httpd.allow_local_network_access = allow_local_network_access
     if unit_test:
diff --git a/epicyon.py b/epicyon.py
index b38ca64fc..87bcbbaf6 100644
--- a/epicyon.py
+++ b/epicyon.py
@@ -141,6 +141,10 @@ parser.add_argument('--lists_enabled', type=str,
 parser.add_argument('--userAgentBlocks', type=str,
                     default=None,
                     help='List of blocked user agents, separated by commas')
+parser.add_argument('--crawlersAllowed', type=str,
+                    default=None,
+                    help='List of permitted web crawler user agents, ' +
+                    'separated by commas')
 parser.add_argument('--libretranslate', dest='libretranslateUrl', type=str,
                     default=None,
                     help='URL for LibreTranslate service')
@@ -3301,8 +3305,20 @@ else:
         get_config_param(base_dir, 'userAgentsBlocked')
 if user_agents_blocked_str:
     agent_blocks_list = user_agents_blocked_str.split(',')
-    for agentBlockStr in agent_blocks_list:
-        user_agents_blocked.append(agentBlockStr.strip())
+    for user_agents_blocked_str2 in agent_blocks_list:
+        user_agents_blocked.append(user_agents_blocked_str2.strip())
+
+crawlers_allowed = []
+if args.crawlersAllowed:
+    crawlers_allowed_str = args.crawlersAllowed
+    set_config_param(base_dir, 'crawlersAllowed', crawlers_allowed_str)
+else:
+    crawlers_allowed_str = \
+        get_config_param(base_dir, 'crawlersAllowed')
+if crawlers_allowed_str:
+    crawlers_allowed_list = crawlers_allowed_str.split(',')
+    for crawlers_allowed_str2 in crawlers_allowed_list:
+        crawlers_allowed.append(crawlers_allowed_str2.strip())
 
 lists_enabled = ''
 if args.lists_enabled:
@@ -3365,7 +3381,8 @@ if args.defaultCurrency:
         print('Default currency set to ' + args.defaultCurrency)
 
 if __name__ == "__main__":
-    run_daemon(args.dyslexic_font,
+    run_daemon(crawlers_allowed,
+               args.dyslexic_font,
                content_license_url,
                lists_enabled,
                args.default_reply_interval_hrs,
diff --git a/tests.py b/tests.py
index 14734a87b..f4121d76a 100644
--- a/tests.py
+++ b/tests.py
@@ -822,8 +822,10 @@ def create_server_alice(path: str, domain: str, port: int,
     lists_enabled = ''
     content_license_url = 'https://creativecommons.org/licenses/by/4.0'
     dyslexic_font = False
+    crawlers_allowed = []
     print('Server running: Alice')
-    run_daemon(dyslexic_font,
+    run_daemon(crawlers_allowed,
+               dyslexic_font,
                content_license_url,
                lists_enabled, default_reply_interval_hrs,
                low_bandwidth, max_like_count,
@@ -975,8 +977,10 @@ def create_server_bob(path: str, domain: str, port: int,
     lists_enabled = ''
     content_license_url = 'https://creativecommons.org/licenses/by/4.0'
     dyslexic_font = False
+    crawlers_allowed = []
     print('Server running: Bob')
-    run_daemon(dyslexic_font,
+    run_daemon(crawlers_allowed,
+               dyslexic_font,
                content_license_url,
                lists_enabled, default_reply_interval_hrs,
                low_bandwidth, max_like_count,
@@ -1051,8 +1055,10 @@ def create_server_eve(path: str, domain: str, port: int, federation_list: [],
     lists_enabled = ''
     content_license_url = 'https://creativecommons.org/licenses/by/4.0'
     dyslexic_font = False
+    crawlers_allowed = []
     print('Server running: Eve')
-    run_daemon(dyslexic_font,
+    run_daemon(crawlers_allowed,
+               dyslexic_font,
                content_license_url,
                lists_enabled, default_reply_interval_hrs,
                low_bandwidth, max_like_count,
@@ -1129,8 +1135,10 @@ def create_server_group(path: str, domain: str, port: int,
     lists_enabled = ''
     content_license_url = 'https://creativecommons.org/licenses/by/4.0'
     dyslexic_font = False
+    crawlers_allowed = []
     print('Server running: Group')
-    run_daemon(dyslexic_font,
+    run_daemon(crawlers_allowed,
+               dyslexic_font,
                content_license_url,
                lists_enabled, default_reply_interval_hrs,
                low_bandwidth, max_like_count,