diff --git a/src/cron/service-contract.ts b/src/cron/service-contract.ts
index aacceb2b0c2..ee119e2e029 100644
--- a/src/cron/service-contract.ts
+++ b/src/cron/service-contract.ts
@@ -37,6 +37,8 @@ export type CronListPageResult = {
 
 export type CronWakeResult = { ok: true } | { ok: false };
 
+export type CronServiceRunResult = CronRunResult | { ok: true; ran: false; reason: "invalid-spec" };
+
 export interface CronServiceContract {
   start(): Promise<void>;
   stop(): void;
@@ -46,8 +48,8 @@ export interface CronServiceContract {
   add(input: CronAddInput): Promise<CronAddResult>;
   update(id: string, patch: CronUpdateInput): Promise<CronUpdateResult>;
   remove(id: string): Promise<CronRemoveResult>;
-  run(id: string, mode?: CronRunMode): Promise<CronRunResult>;
-  enqueueRun(id: string, mode?: CronRunMode): Promise<CronRunResult>;
+  run(id: string, mode?: CronRunMode): Promise<CronServiceRunResult>;
+  enqueueRun(id: string, mode?: CronRunMode): Promise<CronServiceRunResult>;
   getJob(id: string): CronJob | undefined;
   wake(opts: { mode: CronWakeMode; text: string }): CronWakeResult;
 }
diff --git a/src/cron/service.ts b/src/cron/service.ts
index d972b2b0c0b..e1fa82d7cf3 100644
--- a/src/cron/service.ts
+++ b/src/cron/service.ts
@@ -1,4 +1,8 @@
-import type { CronListPageOptions, CronServiceContract } from "./service-contract.js";
+import type {
+  CronListPageOptions,
+  CronServiceContract,
+  CronServiceRunResult,
+} from "./service-contract.js";
 import * as ops from "./service/ops.js";
 import { type CronServiceDeps, createCronServiceState } from "./service/state.js";
 import type { CronJob, CronJobCreate, CronJobPatch } from "./types.js";
@@ -8,6 +12,7 @@ export type {
   CronListPageOptions,
   CronListPageResult,
   CronServiceContract,
+  CronServiceRunResult,
   CronWakeResult,
 } from "./service-contract.js";
 
@@ -49,12 +54,16 @@ export class CronService implements CronServiceContract {
     return await ops.remove(this.state, id);
   }
 
-  async run(id: string, mode?: "due" | "force") {
+  async run(id: string, mode?: "due" | "force"): Promise<CronServiceRunResult> {
     return await ops.run(this.state, id, mode);
   }
 
-  async enqueueRun(id: string, mode?: "due" | "force") {
-    return await ops.enqueueRun(this.state, id, mode);
+  async enqueueRun(id: string, mode?: "due" | "force"): Promise<CronServiceRunResult> {
+    const result = await ops.enqueueRun(this.state, id, mode);
+    if (result.ok && "runnable" in result) {
+      throw new Error("cron enqueueRun returned unresolved runnable disposition");
+    }
+    return result;
   }
 
   getJob(id: string): CronJob | undefined {
diff --git a/src/secrets/runtime-core-snapshots.test.ts b/src/secrets/runtime-core-snapshots.test.ts
index 219eef9d8da..dd3f7ede5a7 100644
--- a/src/secrets/runtime-core-snapshots.test.ts
+++ b/src/secrets/runtime-core-snapshots.test.ts
@@ -11,6 +11,7 @@ import {
 } from "./runtime.js";
 import {
   asConfig,
+  buildTestWebSearchProviders,
   loadAuthStoreWithProfiles,
   resetPluginWebSearchProvidersMock,
 } from "./runtime.test-support.ts";