diff --git a/src/queue/processors.ts b/src/queue/processors.ts
index 3bc8dc42a4..483831fd1e 100644
--- a/src/queue/processors.ts
+++ b/src/queue/processors.ts
@@ -3138,9 +3138,9 @@ async function runAgentMaintenancePlanAndExecute(
         moderationBannedLabel: settings.moderationBannedLabel,
       },
       // #selfhost-ci-verification: the executor's own final pre-mutation live-CI re-check (immediately before a
-      // merge or a CI-driven close) must honor the same configured expectedCiContexts this plan was evaluated
-      // against, or the two can disagree on ciState.
-      expectedCiContexts: settings.expectedCiContexts,
+      // merge or a CI-driven close) must honor the same effective branch-protection-plus-expected contexts this
+      // plan was evaluated against, or the two can disagree on ciState.
+      requiredCiContexts: requiredContexts,
       // #3472 split-brain: the executor's own live manual-review hold guard (immediately before approve/merge)
       // must check the SAME configured label the planner itself resolves labels.manualReview from.
       manualReviewLabel: settings.manualReviewLabel,
diff --git a/src/services/agent-action-executor.ts b/src/services/agent-action-executor.ts
index 338fc5a37c..f1330080d7 100644
--- a/src/services/agent-action-executor.ts
+++ b/src/services/agent-action-executor.ts
@@ -16,7 +16,7 @@ import { isAuthorBlacklisted } from "../settings/contributor-blacklist";
 import { classifyMergeFailure, MERGE_RETRY_CAP } from "./merge-failure";
 import { notifyActionToDiscord, notifyActionToSlack, type NotifyOutcome } from "./notify-discord";
 import { cancelInFlightWorkflowRunsForHeadSha, createInstallationToken, githubErrorStatus, isGitHubRateLimitedError } from "../github/app";
-import { fetchLiveCiAggregate, fetchLivePullRequestMergeState, fetchLivePullRequestState, fetchLiveReviewThreadBlockers, mergeRequiredCiContexts, refreshInstallationHealthForInstallation } from "../github/backfill";
+import { fetchLiveCiAggregate, fetchLivePullRequestMergeState, fetchLivePullRequestState, fetchLiveReviewThreadBlockers, refreshInstallationHealthForInstallation } from "../github/backfill";
 import { githubRateLimitAdmissionKeyForToken } from "../github/client";
 import { ensurePullRequestAssignee } from "../github/assignees";
 import { ensurePullRequestLabel, removePullRequestLabel } from "../github/labels";
@@ -168,16 +168,13 @@ export type AgentActionExecutionContext = {
   // executor via getGlobalModerationConfig -- a single extra DB read only on the rare path where a
   // moderation-tracked close actually completed, not threaded through every caller.
   moderationSettings?: ModerationContextSettings | undefined;
-  // settings.expectedCiContexts (#selfhost-ci-verification), resolved by the CALLER (same "the executor has no
-  // settings access" shape as the fields above): the final pre-mutation live-CI re-verification (step 8 below)
-  // must honor the SAME configured-required-contexts view the planning pass already evaluated against, or a
-  // maintainer-configured expectedCiContexts repo could see the plan and its own execution-time re-check
-  // disagree on ciState (e.g. a still-in-progress NON-required check reading "pending" here when the plan's
-  // required-only view was already clean). Absent/undefined ⇒ fold-all mode, unchanged from before this field
-  // existed.
-  expectedCiContexts?: ReadonlyArray<string> | null | undefined;
+  // Effective required CI contexts (#selfhost-ci-verification), resolved by the CALLER (same "the executor has
+  // no settings access" shape as the fields above): the final pre-mutation live-CI re-verification (step 8 below)
+  // must honor the SAME branch-protection-plus-expected required-contexts view the planning pass already
+  // evaluated against. Absent/undefined ⇒ fold-all mode, unchanged from before this field existed.
+  requiredCiContexts?: ReadonlySet<string> | null | undefined;
   // settings.manualReviewLabel (#3472 split-brain), resolved by the CALLER (same "the executor has no settings
-  // access" shape as expectedCiContexts above): the approve/merge live label guard (step 7b below) needs the
+  // access" shape as requiredCiContexts above): the approve/merge live label guard (step 7b below) needs the
   // SAME configured label name the planner itself resolves labels.manualReview from (agent-actions.ts), so a
   // custom label name is honored instead of only ever checking the literal default. `null` explicitly disables
   // the manual-review label (and this guard with it); absent/undefined uses the default AGENT_LABEL_NEEDS_REVIEW.
@@ -401,12 +398,9 @@ export async function executeAgentMaintenanceActions(env: Env, ctx: AgentActionE
     if (requiresLiveCiRecheck || requiresLiveMergeableRecheck || requiresLiveThreadRecheck || requiresLiveDuplicateRecheck) {
       const ciToken = await createInstallationToken(env, ctx.installationId).catch(() => undefined);
       const admissionKey = githubRateLimitAdmissionKeyForToken(env, ciToken, ctx.installationId);
-      // mergeRequiredCiContexts(null, ...) -- no live branch-protection re-fetch here, just the maintainer's own
-      // configured expectedCiContexts (or null/fold-all when unset), matching the "no branch protection" arm of
-      // the planning pass's own merge (mergeRequiredCiContexts is pure and already exported for that call site).
       const [liveCi, liveMergeableState, liveThreadBlockers, liveWinnerState] = await Promise.all([
         requiresLiveCiRecheck
-          ? fetchLiveCiAggregate(env, ctx.repoFullName, expectedHeadSha, ciToken, mergeRequiredCiContexts(null, ctx.expectedCiContexts), admissionKey)
+          ? fetchLiveCiAggregate(env, ctx.repoFullName, expectedHeadSha, ciToken, ctx.requiredCiContexts ?? null, admissionKey)
           : Promise.resolve(undefined),
         requiresLiveMergeableRecheck ? fetchLivePullRequestMergeState(env, ctx.repoFullName, ctx.pullNumber, ciToken, admissionKey) : Promise.resolve(undefined),
         requiresLiveThreadRecheck ? fetchLiveReviewThreadBlockers(env, ctx.repoFullName, ctx.pullNumber, ciToken, admissionKey) : Promise.resolve(undefined),
diff --git a/src/services/agent-approval-queue.ts b/src/services/agent-approval-queue.ts
index 0fb52bbb07..e87b5a8f16 100644
--- a/src/services/agent-approval-queue.ts
+++ b/src/services/agent-approval-queue.ts
@@ -6,7 +6,7 @@ import { executeAgentMaintenanceActions, pendingActionToPlanned } from "./agent-
 import { downgradeCloseToHold, downgradeMergeToHold, isProtectedAutomationAuthor, type PlannedAgentAction } from "../settings/agent-actions";
 import { findBlacklistEntry } from "../settings/contributor-blacklist";
 import { isCloseHoldOnly, isHoldOnly } from "../review/outcomes-wire";
-import { fetchLiveCiAggregate, fetchLivePullRequestMergeState, fetchLivePullRequestReviewDecision, fetchLivePullRequestState, fetchLiveReviewThreadBlockers, mergeRequiredCiContexts } from "../github/backfill";
+import { fetchLiveCiAggregate, fetchLivePullRequestMergeState, fetchLivePullRequestReviewDecision, fetchLivePullRequestState, fetchLiveReviewThreadBlockers, fetchRequiredStatusContexts, mergeRequiredCiContexts } from "../github/backfill";
 import { githubRateLimitAdmissionKeyForToken } from "../github/client";
 import type { AgentPendingActionParams, AgentPendingActionRecord } from "../types";
 
@@ -228,13 +228,13 @@ export async function decidePendingAgentAction(env: Env, input: { id: string; de
     // The CI/mergeable/review calls are no-ops (Promise.resolve(undefined)) when shouldRecheckLiveDisposition is
     // false (block entered ONLY for a duplicate-only recheck); the thread/duplicate calls are independently
     // gated on their own specific flags, mirroring the executor's own same-pattern conditional-Promise.all in
-    // agent-action-executor.ts.
+    // agent-action-executor.ts. The branch-protection fetch is nested inside this same ternary (rather than a
+    // standalone variable) because pr is only known-defined when shouldRecheckLiveDisposition is true.
     const [ciResult, mergeableResult, reviewResult, threadResult, duplicateWinnerResult] = await Promise.allSettled([
       shouldRecheckLiveDisposition
-        ? // mergeRequiredCiContexts(null, ...) -- no live branch-protection re-fetch here, just the maintainer's own
-          // configured expectedCiContexts (or null/fold-all when unset), so this accept-time re-check honors the
-          // same required-contexts view the original plan was evaluated against (#selfhost-ci-verification).
-          fetchLiveCiAggregate(env, pending.repoFullName, pr!.headSha, token, mergeRequiredCiContexts(null, settings.expectedCiContexts), admissionKey)
+        ? fetchRequiredStatusContexts(env, pending.repoFullName, pr!.baseRef, token, admissionKey)
+            .then((branchProtectionContexts) => mergeRequiredCiContexts(branchProtectionContexts, settings.expectedCiContexts))
+            .then((requiredContexts) => fetchLiveCiAggregate(env, pending.repoFullName, pr!.headSha, token, requiredContexts, admissionKey))
         : Promise.resolve(undefined),
       shouldRecheckLiveDisposition ? fetchLivePullRequestMergeState(env, pending.repoFullName, pending.pullNumber, token, admissionKey) : Promise.resolve(undefined),
       shouldRecheckLiveDisposition ? fetchLivePullRequestReviewDecision(env, pending.repoFullName, pending.pullNumber, token, admissionKey) : Promise.resolve(undefined),
@@ -390,6 +390,12 @@ export async function decidePendingAgentAction(env: Env, input: { id: string; de
     }
   }
 
+  const executionCiToken = await createInstallationToken(env, pending.installationId).catch(() => undefined);
+  const executionAdmissionKey = githubRateLimitAdmissionKeyForToken(env, executionCiToken, pending.installationId);
+  const executionRequiredContexts = await fetchRequiredStatusContexts(env, pending.repoFullName, pr?.baseRef, executionCiToken, executionAdmissionKey)
+    .then((branchProtectionContexts) => mergeRequiredCiContexts(branchProtectionContexts, settings.expectedCiContexts))
+    .catch(() => mergeRequiredCiContexts(null, settings.expectedCiContexts));
+
   const outcomes = await executeAgentMaintenanceActions(
     env,
     {
@@ -406,9 +412,9 @@ export async function decidePendingAgentAction(env: Env, input: { id: string; de
       // same way the live webhook path does (src/queue/processors.ts) for the cancel hook to fire here too.
       contributorCapCancelCi: settings.contributorCapCancelCi ?? env.CONTRIBUTOR_CAP_CANCEL_CI_DEFAULT === "true",
       // #selfhost-ci-verification: the executor's OWN final pre-mutation live-CI re-check (step 8 of
-      // executeAgentMaintenanceActions) needs the same configured expectedCiContexts this accept-time
-      // re-check (above) and the original plan were both evaluated against.
-      expectedCiContexts: settings.expectedCiContexts,
+      // executeAgentMaintenanceActions) needs the same effective required contexts this accept-time re-check
+      // (above) evaluated against. Re-fetch so branch-protection changes remain authoritative at accept time.
+      requiredCiContexts: executionRequiredContexts,
       // #3472 split-brain: a staged approve/merge can sit queued long enough for a SIBLING pass to publish a
       // manual-review hold on this same PR/head before the maintainer accepts — the executor's own live guard
       // (step 7b of executeAgentMaintenanceActions) needs the configured label to check for.
diff --git a/test/unit/agent-action-executor.test.ts b/test/unit/agent-action-executor.test.ts
index a94dcce14b..9ec557efff 100644
--- a/test/unit/agent-action-executor.test.ts
+++ b/test/unit/agent-action-executor.test.ts
@@ -782,14 +782,14 @@ describe("executeAgentMaintenanceActions (#778 gate stack)", () => {
   // REGRESSION (gate-flagged gap, #selfhost-ci-verification): the planning pass evaluates settings.expectedCiContexts,
   // but this final pre-mutation re-check used to always pass `undefined` for requiredContexts (fold-all mode) --
   // a maintainer-configured repo could see the plan and its own execution-time re-check disagree on ciState.
-  it("threads ctx.expectedCiContexts into the live CI re-check's requiredContexts argument", async () => {
+  it("threads ctx.requiredCiContexts into the live CI re-check's requiredContexts argument", async () => {
     const env = createTestEnv({});
-    const outcomes = await executeAgentMaintenanceActions(env, ctx({ expectedCiContexts: ["build", "test"] }), [merge]);
+    const outcomes = await executeAgentMaintenanceActions(env, ctx({ requiredCiContexts: new Set(["build", "test"]) }), [merge]);
     expect(outcomes[0]?.outcome).toBe("completed");
     expect(fetchLiveCiAggregate).toHaveBeenCalledWith(env, "owner/repo", "sha7", expect.any(String), new Set(["build", "test"]), expect.any(String));
   });
 
-  it("passes null (fold-all) requiredContexts when ctx.expectedCiContexts is unset — unchanged pre-existing behavior", async () => {
+  it("passes null (fold-all) requiredContexts when ctx.requiredCiContexts is unset — unchanged pre-existing behavior", async () => {
     const env = createTestEnv({});
     const outcomes = await executeAgentMaintenanceActions(env, ctx(), [merge]);
     expect(outcomes[0]?.outcome).toBe("completed");
diff --git a/test/unit/agent-approval-queue.test.ts b/test/unit/agent-approval-queue.test.ts
index 2fff622452..1718b4229c 100644
--- a/test/unit/agent-approval-queue.test.ts
+++ b/test/unit/agent-approval-queue.test.ts
@@ -32,6 +32,7 @@ vi.mock("../../src/github/app", async (importOriginal) => ({
 vi.mock("../../src/github/backfill", async (importOriginal) => ({
   ...(await importOriginal<typeof import("../../src/github/backfill")>()),
   fetchLiveCiAggregate: vi.fn(async () => ({ ciState: "passed" as const, hasPending: false, hasVisiblePending: false, hasMissingRequiredContext: false, failingDetails: [], nonRequiredFailingDetails: [], ciCompletenessWarning: null })),
+  fetchRequiredStatusContexts: vi.fn(async () => null),
   fetchLivePullRequestMergeState: vi.fn(async () => "clean"),
   fetchLivePullRequestReviewDecision: vi.fn(async () => undefined),
   // Defaults to "no live blockers left" so the existing accept tests stay deterministic; individual tests below
@@ -55,7 +56,7 @@ vi.mock("../../src/review/linked-issue-hard-rules", async (importOriginal) => {
 import { createPullRequestReview, mergePullRequest } from "../../src/github/pr-actions";
 import { ensurePullRequestLabel } from "../../src/github/labels";
 import { createInstallationToken } from "../../src/github/app";
-import { fetchLiveCiAggregate, fetchLivePullRequestMergeState, fetchLivePullRequestReviewDecision, fetchLivePullRequestState, fetchLiveReviewThreadBlockers } from "../../src/github/backfill";
+import { fetchLiveCiAggregate, fetchLivePullRequestMergeState, fetchLivePullRequestReviewDecision, fetchLivePullRequestState, fetchLiveReviewThreadBlockers, fetchRequiredStatusContexts } from "../../src/github/backfill";
 import { resolveLinkedIssueHardRule } from "../../src/review/linked-issue-hard-rules";
 import { upsertRepoFocusManifest } from "../../src/signals/focus-manifest-loader";
 import { actionParams, executeAgentMaintenanceActions, pendingActionToPlanned, type AgentActionExecutionContext } from "../../src/services/agent-action-executor";
@@ -504,7 +505,7 @@ describe("agent approval queue (#779)", () => {
   // REGRESSION (gate-flagged gap, #selfhost-ci-verification): this accept-time re-check used to always pass
   // `undefined` for requiredContexts (fold-all mode), even for a repo with settings.expectedCiContexts
   // configured -- so this re-check could disagree with the plan it is meant to validate.
-  it("threads the repo's settings.expectedCiContexts into the accept-time live CI re-check", async () => {
+  it("threads the repo's expectedCiContexts into the accept-time live CI re-check", async () => {
     const env = createTestEnv({ GITHUB_APP_PRIVATE_KEY: "x" });
     await upsertRepositorySettings(env, { repoFullName: "owner/repo", autonomy: { merge: "auto_with_approval" } });
     // expectedCiContexts (#selfhost-ci-verification) is config-as-code only, resolved from the repo's focus
@@ -517,9 +518,41 @@ describe("agent approval queue (#779)", () => {
     const result = await decidePendingAgentAction(env, { id: action.id, decision: "accept", decidedBy: "owner" });
 
     expect(result.status).toBe("accepted");
+    expect(fetchRequiredStatusContexts).toHaveBeenCalledWith(env, "owner/repo", null, expect.any(String), expect.any(String));
     expect(fetchLiveCiAggregate).toHaveBeenCalledWith(env, "owner/repo", "h7", expect.any(String), new Set(["build", "test"]), expect.any(String));
   });
 
+  it("unions branch-protection contexts into the accept-time live CI re-check", async () => {
+    const env = createTestEnv({ GITHUB_APP_PRIVATE_KEY: "x" });
+    await upsertRepositorySettings(env, { repoFullName: "owner/repo", autonomy: { merge: "auto_with_approval" } });
+    await upsertRepoFocusManifest(env, "owner/repo", { gate: { expectedCiContexts: ["build"] } });
+    await seedInstallation(env);
+    await upsertPullRequestFromGitHub(env, "owner/repo", { number: 7, title: "PR", state: "open", user: { login: "contributor" }, head: { sha: "h7" }, base: { ref: "main" }, labels: [], body: "x" });
+    const { action } = await createPendingAgentActionIfAbsent(env, { repoFullName: "owner/repo", pullNumber: 7, installationId: 5, actionClass: "merge", autonomyLevel: "auto_with_approval", params: { mergeMethod: "squash", expectedHeadSha: "h7" }, reason: "clean" });
+    vi.mocked(fetchRequiredStatusContexts).mockResolvedValueOnce(new Set(["branch-required"])).mockResolvedValueOnce(new Set(["branch-required"]));
+
+    const result = await decidePendingAgentAction(env, { id: action.id, decision: "accept", decidedBy: "owner" });
+
+    expect(result.status).toBe("accepted");
+    expect(fetchRequiredStatusContexts).toHaveBeenCalledWith(env, "owner/repo", "main", expect.any(String), expect.any(String));
+    expect(fetchLiveCiAggregate).toHaveBeenCalledWith(env, "owner/repo", "h7", expect.any(String), new Set(["branch-required", "build"]), expect.any(String));
+  });
+
+  it("falls back to expectedCiContexts when the accept-time branch-protection read fails", async () => {
+    const env = createTestEnv({ GITHUB_APP_PRIVATE_KEY: "x" });
+    await upsertRepositorySettings(env, { repoFullName: "owner/repo", autonomy: { merge: "auto_with_approval" } });
+    await upsertRepoFocusManifest(env, "owner/repo", { gate: { expectedCiContexts: ["build"] } });
+    await seedInstallation(env);
+    await upsertPullRequestFromGitHub(env, "owner/repo", { number: 7, title: "PR", state: "open", user: { login: "contributor" }, head: { sha: "h7" }, base: { ref: "main" }, labels: [], body: "x" });
+    const { action } = await createPendingAgentActionIfAbsent(env, { repoFullName: "owner/repo", pullNumber: 7, installationId: 5, actionClass: "merge", autonomyLevel: "auto_with_approval", params: { mergeMethod: "squash", expectedHeadSha: "h7" }, reason: "clean" });
+    vi.mocked(fetchRequiredStatusContexts).mockRejectedValueOnce(new Error("branch protection unavailable")).mockRejectedValueOnce(new Error("branch protection unavailable"));
+
+    const result = await decidePendingAgentAction(env, { id: action.id, decision: "accept", decidedBy: "owner" });
+
+    expect(result.status).toBe("accepted");
+    expect(fetchLiveCiAggregate).toHaveBeenCalledWith(env, "owner/repo", "h7", expect.any(String), new Set(["build"]), expect.any(String));
+  });
+
   it("accept supersedes a staged merge when live CI has since turned pending, not just failed (#2126)", async () => {
     const env = createTestEnv({ GITHUB_APP_PRIVATE_KEY: "x" });
     await upsertRepositorySettings(env, { repoFullName: "owner/repo", autonomy: { merge: "auto_with_approval" } });