diff --git a/src/api/routes.ts b/src/api/routes.ts
index c21cbe1199..6d4313b755 100644
--- a/src/api/routes.ts
+++ b/src/api/routes.ts
@@ -4749,6 +4749,33 @@ export function createApp() {
     return c.json(await refreshRegistry(c.env));
   });
 
+  // Operator-only manual re-gate trigger (#8898): enqueue an `agent-regate-pr` job with `force: true` for one
+  // repo+PR. This is the FIRST production producer of that job's `force` field (threaded through
+  // src/queue/job-dispatch.ts into regatePullRequest) -- every scheduled/webhook producer leaves it unset, so
+  // the force plumbing (a fresh AI opinion that bypasses the durable review cache and the non-cacheable-reuse
+  // cooldown) was built and tested but unreachable from any real caller until now. Bearer-gated by the
+  // `/v1/internal/*` middleware (INTERNAL_JOB_TOKEN). 400s a missing/blank repo or a non-positive-integer PR
+  // number; 404s a repo with no known installation (nothing to authenticate the re-gate against).
+  app.post("/v1/internal/jobs/regate-pr", async (c) => {
+    const body = (await c.req.json().catch(() => ({}))) as { repoFullName?: unknown; prNumber?: unknown };
+    const repoFullName = typeof body?.repoFullName === "string" ? body.repoFullName.trim() : "";
+    if (!repoFullName) return c.json({ error: "repoFullName required" }, 400);
+    const prNumber = Number(body?.prNumber);
+    if (!Number.isInteger(prNumber) || prNumber <= 0) return c.json({ error: "prNumber required" }, 400);
+    const repo = await getRepository(c.env, repoFullName);
+    if (typeof repo?.installationId !== "number") return c.json({ error: "repo not installed" }, 404);
+    const message: JobMessage = {
+      type: "agent-regate-pr",
+      deliveryId: `manual-regate:${crypto.randomUUID()}`,
+      repoFullName: repo.fullName,
+      prNumber,
+      installationId: repo.installationId,
+      force: true,
+    };
+    await c.env.JOBS.send(message);
+    return c.json({ ok: true, status: "queued", repoFullName: repo.fullName, prNumber, force: true }, 202);
+  });
+
   app.post("/v1/internal/jobs/backfill-registered-repos", async (c) => {
     const body = await c.req.json().catch(() => ({}));
     const repoFullName = typeof body?.repoFullName === "string" ? body.repoFullName : undefined;
diff --git a/test/integration/regate-pr-admin-trigger.test.ts b/test/integration/regate-pr-admin-trigger.test.ts
new file mode 100644
index 0000000000..a8aa1ffa1e
--- /dev/null
+++ b/test/integration/regate-pr-admin-trigger.test.ts
@@ -0,0 +1,73 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+import { createApp } from "../../src/api/routes";
+import { createTestEnv } from "../helpers/d1";
+import { upsertRepositoryFromGitHub } from "../../src/db/repositories";
+import { processJob } from "../../src/queue/job-dispatch";
+import * as processors from "../../src/queue/processors";
+import type { JobMessage } from "../../src/types";
+
+// #8898: the manual admin trigger that finally gives the `agent-regate-pr` job's `force` field a real producer.
+describe("POST /v1/internal/jobs/regate-pr (#8898)", () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it("enqueues an agent-regate-pr job with force:true and threads force into regatePullRequest end-to-end", async () => {
+    const app = createApp();
+    const sent: JobMessage[] = [];
+    const env = createTestEnv({
+      JOBS: { async send(message: unknown) { sent.push(message as JobMessage); } } as unknown as Queue,
+    });
+    await upsertRepositoryFromGitHub(env, { name: "gittensory", full_name: "JSONbored/gittensory", private: false, owner: { login: "JSONbored" } }, 456);
+    const headers = { authorization: `Bearer ${env.INTERNAL_JOB_TOKEN}`, "content-type": "application/json" };
+
+    // A whitespace-padded repoFullName is trimmed and resolved to the stored casing before the job is built.
+    const res = await app.request(
+      "/v1/internal/jobs/regate-pr",
+      { method: "POST", headers, body: JSON.stringify({ repoFullName: " JSONbored/gittensory ", prNumber: 42 }) },
+      env,
+    );
+    expect(res.status).toBe(202);
+    await expect(res.json()).resolves.toEqual({ ok: true, status: "queued", repoFullName: "JSONbored/gittensory", prNumber: 42, force: true });
+    const job = sent.at(-1);
+    expect(job).toMatchObject({ type: "agent-regate-pr", repoFullName: "JSONbored/gittensory", prNumber: 42, installationId: 456, force: true });
+    // The job carries a manual-trigger delivery id so downstream rate-limit admission treats it as real work.
+    expect((job as { deliveryId: string }).deliveryId).toMatch(/^manual-regate:/);
+
+    // End-to-end: dispatching the enqueued job hands `force` straight through to regatePullRequest.
+    const regateSpy = vi.spyOn(processors, "regatePullRequest").mockResolvedValue(undefined);
+    await processJob(env, job as JobMessage);
+    expect(regateSpy).toHaveBeenCalledTimes(1);
+    // regatePullRequest(env, repairHeadSha, repoFullName, prNumber, installationId, deliveryId, force, prCreatedAt)
+    expect(regateSpy.mock.calls[0]?.[6]).toBe(true);
+    expect(regateSpy.mock.calls[0]?.[2]).toBe("JSONbored/gittensory");
+    expect(regateSpy.mock.calls[0]?.[3]).toBe(42);
+  });
+
+  it("400s a missing/blank repo, 400s a non-positive-integer PR number, 404s an uninstalled repo", async () => {
+    const app = createApp();
+    const env = createTestEnv({ JOBS: { async send() {} } as unknown as Queue });
+    await upsertRepositoryFromGitHub(env, { name: "gittensory", full_name: "JSONbored/gittensory", private: false, owner: { login: "JSONbored" } }, 456);
+    const headers = { authorization: `Bearer ${env.INTERNAL_JOB_TOKEN}`, "content-type": "application/json" };
+
+    // Malformed JSON body → parsed as {} → no repoFullName → 400 (covers the .catch fallback + the blank guard).
+    const noRepo = await app.request("/v1/internal/jobs/regate-pr", { method: "POST", headers, body: "{" }, env);
+    expect(noRepo.status).toBe(400);
+    await expect(noRepo.json()).resolves.toEqual({ error: "repoFullName required" });
+
+    // Non-numeric PR number → NaN → the left arm of the guard short-circuits → 400.
+    const nanPr = await app.request("/v1/internal/jobs/regate-pr", { method: "POST", headers, body: JSON.stringify({ repoFullName: "JSONbored/gittensory", prNumber: "not-a-number" }) }, env);
+    expect(nanPr.status).toBe(400);
+    await expect(nanPr.json()).resolves.toEqual({ error: "prNumber required" });
+
+    // Zero PR number → an integer, so the right arm (<= 0) is what rejects it → 400.
+    const zeroPr = await app.request("/v1/internal/jobs/regate-pr", { method: "POST", headers, body: JSON.stringify({ repoFullName: "JSONbored/gittensory", prNumber: 0 }) }, env);
+    expect(zeroPr.status).toBe(400);
+
+    // A repo with no stored installation → nothing to authenticate the re-gate against → 404.
+    const uninstalled = await app.request("/v1/internal/jobs/regate-pr", { method: "POST", headers, body: JSON.stringify({ repoFullName: "acme/unknown", prNumber: 7 }) }, env);
+    expect(uninstalled.status).toBe(404);
+    await expect(uninstalled.json()).resolves.toEqual({ error: "repo not installed" });
+  });
+});