diff --git a/apps/server/src/policy/ManagedPolicy.test.ts b/apps/server/src/policy/ManagedPolicy.test.ts
index 26e74f05b0372..b37e9e6e4a075 100644
--- a/apps/server/src/policy/ManagedPolicy.test.ts
+++ b/apps/server/src/policy/ManagedPolicy.test.ts
@@ -185,6 +185,16 @@ it.layer(NodeServices.layer)("ManagedPolicy.load", (it) => {
         "config.commandArgs",
         "environment",
       ]);
+      assert.deepEqual(providers?.lockedInstanceFields?.[ProviderDriverKind.make("devin")], [
+        "config.binaryPath",
+        "config.homePath",
+        "environment",
+      ]);
+      assert.deepEqual(providers?.lockedInstanceFields?.[ProviderDriverKind.make("customAcp")], [
+        "config.binaryPath",
+        "config.arguments",
+        "environment",
+      ]);
       // The host variable that replaces Codex's launch arguments is ignored too.
       const host = { PATH: "/usr/bin", T3CODE_CODEX_LAUNCH_ARGS: "-c mcp_servers.x.command=sh" };
       assert.deepEqual(providerHostEnvironment(policy.summary, host), { PATH: "/usr/bin" });
diff --git a/apps/server/src/policy/managedProviders.ts b/apps/server/src/policy/managedProviders.ts
index ac390097e150d..dbd67693b06f1 100644
--- a/apps/server/src/policy/managedProviders.ts
+++ b/apps/server/src/policy/managedProviders.ts
@@ -2,6 +2,8 @@ import {
   AntigravitySettings,
   ClaudeSettings,
   CodexSettings,
+  CustomAcpSettings,
+  DevinSettings,
   defaultInstanceIdForDriver,
   disallowedProviderMessage,
   type ManagedProviderInstance,
@@ -72,6 +74,8 @@ const KNOWN_DRIVERS: ReadonlyMap<ProviderDriverKind, KnownDriver> = new Map([
   known("codex", "Codex", CodexSettings),
   known("claudeAgent", "Claude", ClaudeSettings),
   known("antigravity", "Antigravity", AntigravitySettings),
+  known("devin", "Devin", DevinSettings),
+  known("customAcp", "Custom ACP", CustomAcpSettings, false),
   ...PACKAGED_CLIENTS.map((client) =>
     known(client.driverKind, client.label, client.settingsSchema, client.hasDefaultInstance),
   ),
@@ -96,6 +100,7 @@ const LAUNCH_CONFIG_FIELDS = [
   "shadowHomePath",
   "commandPath",
   "commandArgs",
+  "arguments",
   "serverUrl",
 ] as const;