diff --git a/CHANGELOG.md b/CHANGELOG.md
index 021d063534..7e2f2a8cd1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
 - Menu: move each usage window's used percentage and reset time into its title row, with all pace detail on one line (#2182). Thanks @jack24254029!
 
 ### Fixed
+- ZoomMate: preserve browser cookie scope so parent-domain sessions reach both API hosts without leaking host-only cookies (fixes #2507). Thanks @weddle!
 - Sync: propagate provider configuration edits made by the CLI or directly in `config.json` to the iCloud fleet without echoing remotely applied writes.
 
 ## 0.47.0 — 2026-08-03
diff --git a/Package.resolved b/Package.resolved
index 2b294822f2..86032ac98b 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -1,5 +1,5 @@
 {
-  "originHash" : "2e8a73bbec33ba73063dc95b68b75cec0a6766aa9f1d5f83925f95e09e47a55e",
+  "originHash" : "ad67f0d4398bb4a21360148bef34796420ed4bd49ea9337ed53c6dc99e5a96bd",
   "pins" : [
     {
       "identity" : "commander",
@@ -33,8 +33,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/steipete/SweetCookieKit",
       "state" : {
-        "revision" : "228c7927e03b85b25b41da23a44c4f5308519796",
-        "version" : "0.5.1"
+        "revision" : "d5ea6d92298779ec0c3ddf7d3d99da186a305e14",
+        "version" : "0.5.2"
       }
     },
     {
diff --git a/Package.swift b/Package.swift
index abad887799..811c9002a2 100644
--- a/Package.swift
+++ b/Package.swift
@@ -8,7 +8,7 @@ let useLocalSweetCookieKit =
 let sweetCookieKitDependency: Package.Dependency =
     useLocalSweetCookieKit && FileManager.default.fileExists(atPath: sweetCookieKitPath)
     ? .package(path: sweetCookieKitPath)
-    : .package(url: "https://github.com/steipete/SweetCookieKit", from: "0.5.1")
+    : .package(url: "https://github.com/steipete/SweetCookieKit", from: "0.5.2")
 
 let sqlite3LibDir = ProcessInfo.processInfo.environment["CODEXBAR_SQLITE3_LIB_DIR"]?
     .trimmingCharacters(in: .whitespacesAndNewlines)
diff --git a/Sources/CodexBarCore/Providers/ZoomMate/ZoomMateCookieImporter.swift b/Sources/CodexBarCore/Providers/ZoomMate/ZoomMateCookieImporter.swift
index 37dc42be10..d00482dc56 100644
--- a/Sources/CodexBarCore/Providers/ZoomMate/ZoomMateCookieImporter.swift
+++ b/Sources/CodexBarCore/Providers/ZoomMate/ZoomMateCookieImporter.swift
@@ -55,8 +55,8 @@ public enum ZoomMateCookieImporter {
     /// Includes the parent "zoom.us" domain — ZoomMate's SSO session cookies (`_zm_*`,
     /// `cf_clearance`, etc.) are scoped to the shared parent domain, not the leaf subdomains, and
     /// domain matching here is substring-based (`.contains`), so this one pattern also matches the
-    /// leaf domains below; both are kept for clarity. The over-broad `.contains("zoom.us")` read is
-    /// then narrowed at send time by `isSendable(toSessionHosts:)`.
+    /// leaf domains below; both are kept for clarity. The broad read is narrowed per destination
+    /// using each record's explicit browser scope.
     private static let cookieDomains = ["zoommate.zoom.us", "ai.zoom.us", "zoom.us"]
 
     public struct SessionInfo: Sendable {
@@ -92,8 +92,7 @@ public enum ZoomMateCookieImporter {
                     in: browserSource,
                     logger: log)
                 for source in sources where !source.records.isEmpty {
-                    let cookies = BrowserCookieClient.makeHTTPCookies(source.records, origin: query.origin)
-                    let cookieHeaders = Self.cookieHeaders(from: cookies)
+                    let cookieHeaders = Self.cookieHeaders(from: source.records)
                     guard !cookieHeaders.isEmpty else { continue }
                     log("\(source.label): found host-scoped cookie headers")
                     sessions.append(SessionInfo(cookieHeaders: cookieHeaders, sourceLabel: source.label))
@@ -108,26 +107,31 @@ public enum ZoomMateCookieImporter {
         return sessions
     }
 
-    /// Whether a browser would attach a cookie scoped to `cookieDomain` to a request to `host`, per
-    /// RFC 6265 domain-matching: a host-only cookie matches its exact host; a
-    /// domain cookie (stored with a leading dot) matches that host and all of its subdomains. This
-    /// keeps parent `.zoom.us` SSO cookies while preventing an `ai.zoom.us` host-only cookie from
-    /// reaching `zoommate.zoom.us` (and vice versa).
-    static func isSendable(cookieDomain: String, toHost host: String) -> Bool {
-        let normalizedDomain = cookieDomain.lowercased()
+    /// Whether a browser would attach a cookie to `host`, per RFC 6265 domain-matching. Scope is
+    /// carried separately because Chromium normalizes `.zoom.us` and `zoom.us` to the same domain
+    /// string when records become `HTTPCookie` values.
+    static func isSendable(cookieDomain: String, scope: BrowserCookieScope, toHost host: String) -> Bool {
+        let normalizedDomain = cookieDomain
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+            .trimmingPrefix(".")
+            .lowercased()
         let normalizedHost = host.lowercased()
         guard ZoomMateCookieHeaders.allowedHosts.contains(normalizedHost), !normalizedDomain.isEmpty else {
             return false
         }
-        guard normalizedDomain.hasPrefix(".") else { return normalizedHost == normalizedDomain }
-        let bareDomain = String(normalizedDomain.dropFirst())
-        guard !bareDomain.isEmpty else { return false }
-        return normalizedHost == bareDomain || normalizedHost.hasSuffix("." + bareDomain)
+        switch scope {
+        case .hostOnly:
+            return normalizedHost == normalizedDomain
+        case .domain:
+            return normalizedHost == normalizedDomain || normalizedHost.hasSuffix("." + normalizedDomain)
+        }
     }
 
-    static func cookieHeaders(from cookies: [HTTPCookie]) -> ZoomMateCookieHeaders {
+    static func cookieHeaders(from records: [BrowserCookieRecord]) -> ZoomMateCookieHeaders {
         let pairs: [(String, String)] = ZoomMateCookieHeaders.allowedHosts.compactMap { host in
-            let sendable = cookies.filter { Self.isSendable(cookieDomain: $0.domain, toHost: host) }
+            let sendable = records.filter {
+                Self.isSendable(cookieDomain: $0.domain, scope: $0.scope, toHost: host)
+            }
             guard !sendable.isEmpty else { return nil }
             let header = sendable.map { "\($0.name)=\($0.value)" }.joined(separator: "; ")
             return (host, header)
diff --git a/Tests/CodexBarTests/Fixtures/ZoomMate/issue-2507-cookie-scope.json b/Tests/CodexBarTests/Fixtures/ZoomMate/issue-2507-cookie-scope.json
new file mode 100644
index 0000000000..ea4f1002c6
--- /dev/null
+++ b/Tests/CodexBarTests/Fixtures/ZoomMate/issue-2507-cookie-scope.json
@@ -0,0 +1,39 @@
+{
+  "records": [
+    {
+      "sourceDomain": ".zoom.us",
+      "domain": "zoom.us",
+      "scope": "domain",
+      "name": "parent",
+      "value": "fake"
+    },
+    {
+      "sourceDomain": "zoom.us",
+      "domain": "zoom.us",
+      "scope": "hostOnly",
+      "name": "parent-host-only",
+      "value": "fake"
+    },
+    {
+      "sourceDomain": "ai.zoom.us",
+      "domain": "ai.zoom.us",
+      "scope": "hostOnly",
+      "name": "ai-only",
+      "value": "fake"
+    },
+    {
+      "sourceDomain": "zoommate.zoom.us",
+      "domain": "zoommate.zoom.us",
+      "scope": "hostOnly",
+      "name": "mate-only",
+      "value": "fake"
+    },
+    {
+      "sourceDomain": "marketing.zoom.us",
+      "domain": "marketing.zoom.us",
+      "scope": "hostOnly",
+      "name": "marketing-only",
+      "value": "fake"
+    }
+  ]
+}
diff --git a/Tests/CodexBarTests/ZoomMateUsageFetcherTests.swift b/Tests/CodexBarTests/ZoomMateUsageFetcherTests.swift
index 0946707f2c..a76385898b 100644
--- a/Tests/CodexBarTests/ZoomMateUsageFetcherTests.swift
+++ b/Tests/CodexBarTests/ZoomMateUsageFetcherTests.swift
@@ -1,6 +1,9 @@
 import Foundation
 import Testing
 @testable import CodexBarCore
+#if os(macOS)
+import SweetCookieKit
+#endif
 
 struct ZoomMateUsageFetcherTests {
     private final class MessageRecorder: @unchecked Sendable {
@@ -821,39 +824,68 @@ struct ZoomMateUsageFetcherTests {
 
     #if os(macOS)
     @Test
-    func `automatic import partitions parent and host-only cookies per destination`() throws {
-        func cookie(domain: String, name: String) throws -> HTTPCookie {
-            try #require(HTTPCookie(properties: [
-                .domain: domain,
-                .path: "/",
-                .name: name,
-                .value: "fake",
-                .secure: "TRUE",
-            ]))
-        }
-
-        let headers = try ZoomMateCookieImporter.cookieHeaders(from: [
-            cookie(domain: ".zoom.us", name: "parent"),
-            cookie(domain: "zoom.us", name: "parent-host-only"),
-            cookie(domain: "ai.zoom.us", name: "ai-only"),
-            cookie(domain: "zoommate.zoom.us", name: "mate-only"),
-            cookie(domain: "marketing.zoom.us", name: "marketing-only"),
-        ])
+    func `issue 2507 fixture routes parent domain cookie to both hosts without leaking host-only cookies`() throws {
+        let records = try Self.issue2507CookieRecords()
+        let headers = ZoomMateCookieImporter.cookieHeaders(from: records)
 
         #expect(headers.header(forHost: "ai.zoom.us") == "parent=fake; ai-only=fake")
         #expect(headers.header(forHost: "zoommate.zoom.us") == "parent=fake; mate-only=fake")
     }
 
     @Test
-    func `cookie scope filter follows RFC 6265 host-only and domain matching`() {
-        #expect(ZoomMateCookieImporter.isSendable(cookieDomain: "ai.zoom.us", toHost: "ai.zoom.us"))
-        #expect(!ZoomMateCookieImporter.isSendable(cookieDomain: "ai.zoom.us", toHost: "zoommate.zoom.us"))
-        #expect(ZoomMateCookieImporter.isSendable(cookieDomain: ".zoom.us", toHost: "ai.zoom.us"))
-        #expect(ZoomMateCookieImporter.isSendable(cookieDomain: ".zoom.us", toHost: "zoommate.zoom.us"))
-        #expect(!ZoomMateCookieImporter.isSendable(cookieDomain: "zoom.us", toHost: "ai.zoom.us"))
-        #expect(!ZoomMateCookieImporter.isSendable(cookieDomain: "marketing.zoom.us", toHost: "ai.zoom.us"))
-        #expect(!ZoomMateCookieImporter.isSendable(cookieDomain: "zoom.us.attacker.com", toHost: "ai.zoom.us"))
-        #expect(!ZoomMateCookieImporter.isSendable(cookieDomain: "", toHost: "ai.zoom.us"))
+    func `cookie scope filter follows explicit RFC 6265 scope`() {
+        #expect(ZoomMateCookieImporter.isSendable(
+            cookieDomain: "ai.zoom.us", scope: .hostOnly, toHost: "ai.zoom.us"))
+        #expect(!ZoomMateCookieImporter.isSendable(
+            cookieDomain: "ai.zoom.us", scope: .hostOnly, toHost: "zoommate.zoom.us"))
+        #expect(ZoomMateCookieImporter.isSendable(
+            cookieDomain: "zoom.us", scope: .domain, toHost: "ai.zoom.us"))
+        #expect(ZoomMateCookieImporter.isSendable(
+            cookieDomain: "zoom.us", scope: .domain, toHost: "zoommate.zoom.us"))
+        #expect(!ZoomMateCookieImporter.isSendable(
+            cookieDomain: "zoom.us", scope: .hostOnly, toHost: "ai.zoom.us"))
+        #expect(!ZoomMateCookieImporter.isSendable(
+            cookieDomain: "marketing.zoom.us", scope: .hostOnly, toHost: "ai.zoom.us"))
+        #expect(!ZoomMateCookieImporter.isSendable(
+            cookieDomain: "zoom.us.attacker.com", scope: .domain, toHost: "ai.zoom.us"))
+        #expect(!ZoomMateCookieImporter.isSendable(cookieDomain: "", scope: .domain, toHost: "ai.zoom.us"))
+    }
+
+    private struct CookieScopeFixture: Decodable {
+        let records: [Record]
+
+        struct Record: Decodable {
+            let sourceDomain: String
+            let domain: String
+            let scope: String
+            let name: String
+            let value: String
+        }
+    }
+
+    private static func issue2507CookieRecords() throws -> [BrowserCookieRecord] {
+        let url = try #require(Bundle.module.url(
+            forResource: "issue-2507-cookie-scope",
+            withExtension: "json",
+            subdirectory: "Fixtures/ZoomMate"))
+        let fixture = try JSONDecoder().decode(CookieScopeFixture.self, from: Data(contentsOf: url))
+        return try fixture.records.map { record in
+            let scope: BrowserCookieScope = switch record.scope {
+            case "domain": .domain
+            case "hostOnly": .hostOnly
+            default: throw ZoomMateUsageError.parseFailed("Unknown cookie fixture scope: \(record.scope)")
+            }
+            #expect(record.sourceDomain.trimmingPrefix(".") == record.domain)
+            return BrowserCookieRecord(
+                domain: record.domain,
+                name: record.name,
+                path: "/",
+                value: record.value,
+                expires: nil,
+                isSecure: true,
+                isHTTPOnly: true,
+                scope: scope)
+        }
     }
     #endif