diff --git a/src/Config.zig b/src/Config.zig
index 73c7f3a7..680a99a8 100644
--- a/src/Config.zig
+++ b/src/Config.zig
@@ -23,6 +23,8 @@ const Allocator = std.mem.Allocator;
 const log = @import("log.zig");
 const dump = @import("browser/dump.zig");
 
+const WebBotAuth = @import("browser/WebBotAuth.zig");
+
 pub const RunMode = enum {
     help,
     fetch,
@@ -161,6 +163,17 @@ pub fn cdpTimeout(self: *const Config) usize {
     };
 }
 
+pub fn webBotAuth(self: *const Config) ?WebBotAuth {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| WebBotAuth{
+            .key_file = opts.common.web_bot_auth_key_file orelse return null,
+            .keyid = opts.common.web_bot_auth_keyid orelse return null,
+            .domain = opts.common.web_bot_auth_domain orelse return null,
+        },
+        .help, .version => null,
+    };
+}
+
 pub fn maxConnections(self: *const Config) u16 {
     return switch (self.mode) {
         .serve => |opts| opts.cdp_max_connections,
@@ -227,6 +240,10 @@ pub const Common = struct {
     log_format: ?log.Format = null,
     log_filter_scopes: ?[]log.Scope = null,
     user_agent_suffix: ?[]const u8 = null,
+
+    web_bot_auth_key_file: ?[]const u8 = null,
+    web_bot_auth_keyid: ?[]const u8 = null,
+    web_bot_auth_domain: ?[]const u8 = null,
 };
 
 /// Pre-formatted HTTP headers for reuse across Http and Client.
@@ -334,6 +351,14 @@ pub fn printUsageAndExit(self: *const Config, success: bool) void {
         \\--user_agent_suffix
         \\                Suffix to append to the Lightpanda/X.Y User-Agent
         \\
+        \\--web_bot_auth_key_file
+        \\                Path to the Ed25519 private key PEM file.
+        \\
+        \\--web_bot_auth_keyid
+        \\                The JWK thumbprint of your public key.
+        \\
+        \\--web_bot_auth_directory
+        \\                Your domain e.g. yourdomain.com
     ;
 
     //                                                                     MAX_HELP_LEN|
@@ -855,5 +880,32 @@ fn parseCommonArg(
         return true;
     }
 
+    if (std.mem.eql(u8, "--web_bot_auth_key_file", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--web_bot_auth_key_file" });
+            return error.InvalidArgument;
+        };
+        common.web_bot_auth_key_file = try allocator.dupe(u8, str);
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--web_bot_auth_keyid", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--web_bot_auth_keyid" });
+            return error.InvalidArgument;
+        };
+        common.web_bot_auth_keyid = try allocator.dupe(u8, str);
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--web_bot_auth_domain", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--web_bot_auth_domain" });
+            return error.InvalidArgument;
+        };
+        common.web_bot_auth_domain = try allocator.dupe(u8, str);
+        return true;
+    }
+
     return false;
 }
diff --git a/src/network/WebBotAuth.zig b/src/network/WebBotAuth.zig
new file mode 100644
index 00000000..4af598fb
--- /dev/null
+++ b/src/network/WebBotAuth.zig
@@ -0,0 +1,23 @@
+// Copyright (C) 2023-2026  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const WebBotAuth = @This();
+
+key_file: []const u8,
+keyid: []const u8,
+domain: []const u8,