diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9a540b531b..e3d45bd71c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ Docs: https://docs.openclaw.ai
 - Plugins/install: repair active and default-enabled bundled plugin runtime dependencies before import in packaged installs, so bundled Discord, WhatsApp, Slack, Telegram, and provider plugins work without putting their dependency trees in core.
 - BlueBubbles: raise the outbound `/api/v1/message/text` send timeout default from 10s to 30s, and add a configurable `channels.bluebubbles.sendTimeoutMs` (also per-account) so macOS 26 setups where Private API iMessage sends stall for 60+ seconds no longer silently lose messages at the 10s abort. Probes, chat lookups, and health checks keep the shorter 10s default. Fixes #67486. (#69193) Thanks @omarshahine.
 - Context engine/plugins: stop rejecting third-party context engines whose `info.id` differs from the registered plugin slot id. The strict-match contract added in 2026.4.14 broke `lossless-claw` and other plugins whose internal engine id does not equal the slot id they are registered under, producing repeated `info.id must match registered id` lane failures on every turn. Fixes #66601. (#66678) Thanks @GodsBoy.
+- Agents/compaction: rename embedded Pi compaction lifecycle events to `compaction_start` / `compaction_end` so OpenClaw stays aligned with `pi-coding-agent` 0.66.1 event naming. (#67713) Thanks @mpz4life.
 
 ## 2026.4.20
 
diff --git a/docs/pi.md b/docs/pi.md
index 72d6744c0fd..f7194c19c78 100644
--- a/docs/pi.md
+++ b/docs/pi.md
@@ -225,7 +225,7 @@ Events handled include:
 - `tool_execution_start` / `tool_execution_update` / `tool_execution_end`
 - `turn_start` / `turn_end`
 - `agent_start` / `agent_end`
-- `auto_compaction_start` / `auto_compaction_end`
+- `compaction_start` / `compaction_end`
 
 ### 4. Prompting
 
diff --git a/src/agents/pi-embedded-subscribe.handlers.compaction.test.ts b/src/agents/pi-embedded-subscribe.handlers.compaction.test.ts
index 059143e17ca..95f2bc6d6e7 100644
--- a/src/agents/pi-embedded-subscribe.handlers.compaction.test.ts
+++ b/src/agents/pi-embedded-subscribe.handlers.compaction.test.ts
@@ -13,7 +13,7 @@ import {
   waitForCompactionCount,
 } from "./pi-embedded-subscribe.compaction-test-helpers.js";
 import {
-  handleAutoCompactionEnd,
+  handleCompactionEnd,
   reconcileSessionStoreCompactionCountAfterSuccess,
 } from "./pi-embedded-subscribe.handlers.compaction.js";
 import type { EmbeddedPiSubscribeContext } from "./pi-embedded-subscribe.handlers.types.js";
@@ -112,7 +112,7 @@ describe("reconcileSessionStoreCompactionCountAfterSuccess", () => {
   });
 });
 
-describe("handleAutoCompactionEnd", () => {
+describe("handleCompactionEnd", () => {
   it("reconciles the session store after a successful compaction end event", async () => {
     const tmp = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-compaction-handler-"));
     const storePath = path.join(tmp, "sessions.json");
@@ -129,8 +129,8 @@ describe("handleAutoCompactionEnd", () => {
       initialCount: 1,
     });
 
-    handleAutoCompactionEnd(ctx, {
-      type: "auto_compaction_end",
+    handleCompactionEnd(ctx, {
+      type: "compaction_end",
       result: { kept: 12 },
       willRetry: false,
       aborted: false,
diff --git a/src/agents/pi-embedded-subscribe.handlers.compaction.ts b/src/agents/pi-embedded-subscribe.handlers.compaction.ts
index 6b94b9af326..f7f5caf5bf8 100644
--- a/src/agents/pi-embedded-subscribe.handlers.compaction.ts
+++ b/src/agents/pi-embedded-subscribe.handlers.compaction.ts
@@ -4,7 +4,7 @@ import { getGlobalHookRunner } from "../plugins/hook-runner-global.js";
 import type { EmbeddedPiSubscribeContext } from "./pi-embedded-subscribe.handlers.types.js";
 import { makeZeroUsageSnapshot } from "./usage.js";
 
-export function handleAutoCompactionStart(ctx: EmbeddedPiSubscribeContext) {
+export function handleCompactionStart(ctx: EmbeddedPiSubscribeContext) {
   ctx.state.compactionInFlight = true;
   ctx.state.livenessState = "paused";
   ctx.ensureCompactionPromise();
@@ -39,7 +39,7 @@ export function handleAutoCompactionStart(ctx: EmbeddedPiSubscribeContext) {
   }
 }
 
-export function handleAutoCompactionEnd(
+export function handleCompactionEnd(
   ctx: EmbeddedPiSubscribeContext,
   evt: AgentEvent & { willRetry?: unknown; result?: unknown; aborted?: unknown },
 ) {
diff --git a/src/agents/pi-embedded-subscribe.handlers.lifecycle.ts b/src/agents/pi-embedded-subscribe.handlers.lifecycle.ts
index 58275c0c051..193df06b654 100644
--- a/src/agents/pi-embedded-subscribe.handlers.lifecycle.ts
+++ b/src/agents/pi-embedded-subscribe.handlers.lifecycle.ts
@@ -16,8 +16,8 @@ import { isPromiseLike } from "./pi-embedded-subscribe.promise.js";
 import { isAssistantMessage } from "./pi-embedded-utils.js";
 
 export {
-  handleAutoCompactionEnd,
-  handleAutoCompactionStart,
+  handleCompactionEnd,
+  handleCompactionStart,
 } from "./pi-embedded-subscribe.handlers.compaction.js";
 
 export function handleAgentStart(ctx: EmbeddedPiSubscribeContext) {
diff --git a/src/agents/pi-embedded-subscribe.handlers.ts b/src/agents/pi-embedded-subscribe.handlers.ts
index 00ecb8654f9..09138d660c8 100644
--- a/src/agents/pi-embedded-subscribe.handlers.ts
+++ b/src/agents/pi-embedded-subscribe.handlers.ts
@@ -1,8 +1,8 @@
 import {
   handleAgentEnd,
   handleAgentStart,
-  handleAutoCompactionEnd,
-  handleAutoCompactionStart,
+  handleCompactionEnd,
+  handleCompactionStart,
 } from "./pi-embedded-subscribe.handlers.lifecycle.js";
 import {
   handleMessageEnd,
@@ -113,14 +113,14 @@ export function createEmbeddedPiSessionEventHandler(ctx: EmbeddedPiSubscribeCont
           handleAgentStart(ctx);
         });
         return;
-      case "auto_compaction_start":
+      case "compaction_start":
         scheduleEvent(evt, () => {
-          handleAutoCompactionStart(ctx);
+          handleCompactionStart(ctx);
         });
         return;
-      case "auto_compaction_end":
+      case "compaction_end":
         scheduleEvent(evt, () => {
-          handleAutoCompactionEnd(ctx, evt as never);
+          handleCompactionEnd(ctx, evt as never);
         });
         return;
       case "agent_end":
diff --git a/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.splits-long-single-line-fenced-blocks-reopen.test.ts b/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.splits-long-single-line-fenced-blocks-reopen.test.ts
index f2c260ca0d0..057898f7f4c 100644
--- a/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.splits-long-single-line-fenced-blocks-reopen.test.ts
+++ b/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.splits-long-single-line-fenced-blocks-reopen.test.ts
@@ -58,7 +58,7 @@ describe("subscribeEmbeddedPiSession", () => {
 
     for (const listener of listeners) {
       listener({
-        type: "auto_compaction_end",
+        type: "compaction_end",
         willRetry: true,
       });
     }
@@ -96,7 +96,7 @@ describe("subscribeEmbeddedPiSession", () => {
     });
 
     for (const listener of listeners) {
-      listener({ type: "auto_compaction_start" });
+      listener({ type: "compaction_start" });
     }
 
     expect(subscription.isCompacting()).toBe(true);
@@ -110,7 +110,7 @@ describe("subscribeEmbeddedPiSession", () => {
     expect(resolved).toBe(false);
 
     for (const listener of listeners) {
-      listener({ type: "auto_compaction_end", willRetry: false });
+      listener({ type: "compaction_end", willRetry: false });
     }
 
     await waitPromise;
@@ -147,7 +147,7 @@ describe("subscribeEmbeddedPiSession", () => {
     });
 
     for (const listener of listeners) {
-      listener({ type: "auto_compaction_end", willRetry: false });
+      listener({ type: "compaction_end", willRetry: false });
     }
 
     const usage = (session.messages?.[0] as { usage?: unknown } | undefined)?.usage;
diff --git a/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.subscribeembeddedpisession.test.ts b/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.subscribeembeddedpisession.test.ts
index cb52ad68b02..2b069a4c001 100644
--- a/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.subscribeembeddedpisession.test.ts
+++ b/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.subscribeembeddedpisession.test.ts
@@ -602,7 +602,7 @@ describe("subscribeEmbeddedPiSession", () => {
       isError: false,
       result: { ok: true },
     });
-    emit({ type: "auto_compaction_end", willRetry: true, result: { summary: "compacted" } });
+    emit({ type: "compaction_end", willRetry: true, result: { summary: "compacted" } });
     emit({ type: "agent_end" });
 
     expect(subscription.getReplayState()).toEqual({
@@ -638,7 +638,7 @@ describe("subscribeEmbeddedPiSession", () => {
       isError: false,
       result: { details: { status: "ok" } },
     });
-    emit({ type: "auto_compaction_end", willRetry: true, result: { summary: "compacted" } });
+    emit({ type: "compaction_end", willRetry: true, result: { summary: "compacted" } });
     emit({ type: "agent_end" });
 
     const payloads = extractAgentEventPayloads(onAgentEvent.mock.calls);
diff --git a/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.waits-multiple-compaction-retries-before-resolving.test.ts b/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.waits-multiple-compaction-retries-before-resolving.test.ts
index 22d0a30bfde..3ffa502c4e4 100644
--- a/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.waits-multiple-compaction-retries-before-resolving.test.ts
+++ b/src/agents/pi-embedded-subscribe.subscribe-embedded-pi-session.waits-multiple-compaction-retries-before-resolving.test.ts
@@ -8,8 +8,8 @@ describe("subscribeEmbeddedPiSession", () => {
       runId: "run-3",
     });
 
-    emit({ type: "auto_compaction_end", willRetry: true });
-    emit({ type: "auto_compaction_end", willRetry: true });
+    emit({ type: "compaction_end", willRetry: true });
+    emit({ type: "compaction_end", willRetry: true });
 
     let resolved = false;
     const waitPromise = subscription.waitForCompactionRetry().then(() => {
@@ -35,15 +35,15 @@ describe("subscribeEmbeddedPiSession", () => {
       runId: "run-compaction-count",
     });
 
-    emit({ type: "auto_compaction_start" });
+    emit({ type: "compaction_start" });
     expect(subscription.getCompactionCount()).toBe(0);
 
     // willRetry with result — counter IS incremented (overflow compaction succeeded)
-    emit({ type: "auto_compaction_end", willRetry: true, result: { summary: "s" } });
+    emit({ type: "compaction_end", willRetry: true, result: { summary: "s" } });
     expect(subscription.getCompactionCount()).toBe(1);
 
     // willRetry=false with result — counter incremented again
-    emit({ type: "auto_compaction_end", willRetry: false, result: { summary: "s2" } });
+    emit({ type: "compaction_end", willRetry: false, result: { summary: "s2" } });
     expect(subscription.getCompactionCount()).toBe(2);
   });
 
@@ -53,10 +53,10 @@ describe("subscribeEmbeddedPiSession", () => {
     });
 
     // No result (e.g. aborted or cancelled) — counter stays at 0
-    emit({ type: "auto_compaction_end", willRetry: false, result: undefined });
+    emit({ type: "compaction_end", willRetry: false, result: undefined });
     expect(subscription.getCompactionCount()).toBe(0);
 
-    emit({ type: "auto_compaction_end", willRetry: false, aborted: true });
+    emit({ type: "compaction_end", willRetry: false, aborted: true });
     expect(subscription.getCompactionCount()).toBe(0);
   });
 
@@ -79,9 +79,9 @@ describe("subscribeEmbeddedPiSession", () => {
       });
     });
 
-    emit({ type: "auto_compaction_start" });
-    emit({ type: "auto_compaction_end", willRetry: true });
-    emit({ type: "auto_compaction_end", willRetry: false });
+    emit({ type: "compaction_start" });
+    emit({ type: "compaction_end", willRetry: true });
+    emit({ type: "compaction_end", willRetry: false });
 
     stop();
 
@@ -99,7 +99,7 @@ describe("subscribeEmbeddedPiSession", () => {
       sessionExtras: { isCompacting: true, abortCompaction },
     });
 
-    emit({ type: "auto_compaction_start" });
+    emit({ type: "compaction_start" });
 
     const waitPromise = subscription.waitForCompactionRetry();
     subscription.unsubscribe();
diff --git a/src/plugins/wired-hooks-compaction.test.ts b/src/plugins/wired-hooks-compaction.test.ts
index 3978171c7aa..7286cc6d1f5 100644
--- a/src/plugins/wired-hooks-compaction.test.ts
+++ b/src/plugins/wired-hooks-compaction.test.ts
@@ -22,8 +22,8 @@ vi.mock("../infra/agent-events.js", () => ({
 }));
 
 import {
-  handleAutoCompactionEnd,
-  handleAutoCompactionStart,
+  handleCompactionEnd,
+  handleCompactionStart,
 } from "../agents/pi-embedded-subscribe.handlers.compaction.js";
 
 describe("compaction hook wiring", () => {
@@ -111,16 +111,16 @@ describe("compaction hook wiring", () => {
       aborted?: boolean;
     },
   ) {
-    handleAutoCompactionEnd(
+    handleCompactionEnd(
       ctx as never,
       {
-        type: "auto_compaction_end",
+        type: "compaction_end",
         ...event,
       } as never,
     );
   }
 
-  it("calls runBeforeCompaction in handleAutoCompactionStart", () => {
+  it("calls runBeforeCompaction in handleCompactionStart", () => {
     hookMocks.runner.hasHooks.mockReturnValue(true);
 
     const ctx = {
@@ -136,7 +136,7 @@ describe("compaction hook wiring", () => {
       ensureCompactionPromise: vi.fn(),
     };
 
-    handleAutoCompactionStart(ctx as never);
+    handleCompactionStart(ctx as never);
 
     expect(hookMocks.runner.runBeforeCompaction).toHaveBeenCalledTimes(1);
     expectCompactionEvent({