diff --git a/docs/pr-review-fix-queue.md b/docs/pr-review-fix-queue.md
index c1f5405..3769945 100644
--- a/docs/pr-review-fix-queue.md
+++ b/docs/pr-review-fix-queue.md
@@ -33,7 +33,7 @@ Configuration:
 
 | Env Var | Description | Default |
 |---------|-------------|---------|
-| `PR_FOLLOWUP_BOT_IDENTITIES` | Comma-separated GitHub logins whose PRs are eligible | `github-actions[bot]` |
+| `PR_FOLLOWUP_BOT_IDENTITIES` | Comma-separated GitHub logins whose PRs are eligible | `github-actions[bot]`, `itsmiso-ai` |
 | `PR_FOLLOWUP_BRANCH_OWNERS` | Comma-separated repo owners allowed for queueing | All (opt-in safety) |
 
 ### Real-time webhooks
diff --git a/src/lib/pr-followup-ingestion.test.ts b/src/lib/pr-followup-ingestion.test.ts
index 84abe3d..47db1c5 100644
--- a/src/lib/pr-followup-ingestion.test.ts
+++ b/src/lib/pr-followup-ingestion.test.ts
@@ -120,6 +120,15 @@ describe("isAllowedBotAuthor", () => {
     expect(isAllowedBotAuthor(undefined)).toBe(false);
   });
 
+  it("defaults to itsmiso-ai + github-actions[bot] when env var is unset", () => {
+    delete process.env.PR_FOLLOWUP_BOT_IDENTITIES;
+    expect(isAllowedBotAuthor("itsmiso-ai")).toBe(true);
+    expect(isAllowedBotAuthor("github-actions[bot]")).toBe(true);
+    // Other bots still rejected by default
+    expect(isAllowedBotAuthor("app/smurf-bot")).toBe(false);
+    expect(isAllowedBotAuthor("random-bot")).toBe(false);
+  });
+
   afterEach(() => {
     delete process.env.PR_FOLLOWUP_BOT_IDENTITIES;
   });
diff --git a/src/lib/pr-followup-ingestion.ts b/src/lib/pr-followup-ingestion.ts
index dd3d323..7bc907b 100644
--- a/src/lib/pr-followup-ingestion.ts
+++ b/src/lib/pr-followup-ingestion.ts
@@ -32,9 +32,16 @@ export interface PrFollowupConfig {
 /** Classification result from feedback analysis */
 export type FeedbackClassification = "actionable" | "needs_human";
 
-// ─── Default config (no hardcoded agent names or repo names) ────────────────
-
-const DEFAULT_BOT_IDENTITIES: BotIdentity[] = ["github-actions[bot]"];
+// ─── Default config ─────────────────────────────────────────────────────────
+// The default bot allowlist is intentionally narrow. Operators should set
+// `PR_FOLLOWUP_BOT_IDENTITIES` (comma-separated GitHub logins) to match the
+// bots that author their agent PRs. Without that env var, the merge-conflict
+// surfacing and other PR-followup ingestion paths will silently no-op.
+//
+// `itsmiso-ai` is included by default because that is the Miso author identity
+// for the current `misospace/*` agent fleet. The env var still wins when set.
+
+const DEFAULT_BOT_IDENTITIES: BotIdentity[] = ["github-actions[bot]", "itsmiso-ai"];
 
 function getConfig(): PrFollowupConfig {
   const rawIdentities = process.env.PR_FOLLOWUP_BOT_IDENTITIES;