ACP: remove maxMetaEventsPerTurn limit

src/auto-reply/reply/acp-projector.test.ts

@@ -680,57 +680,6 @@ describe("createAcpReplyProjector", () => {
     });
   });
 
-  it("enforces maxMetaEventsPerTurn without suppressing assistant text", async () => {
-    const deliveries: Array<{ kind: string; text?: string }> = [];
-    const projector = createAcpReplyProjector({
-      cfg: createCfg({
-        acp: {
-          enabled: true,
-          stream: {
-            coalesceIdleMs: 0,
-            maxChunkChars: 256,
-            deliveryMode: "live",
-            maxMetaEventsPerTurn: 1,
-            tagVisibility: {
-              usage_update: true,
-            },
-          },
-        },
-      }),
-      shouldSendToolSummaries: true,
-      deliver: async (kind, payload) => {
-        deliveries.push({ kind, text: payload.text });
-        return true;
-      },
-    });
-
-    await projector.onEvent({
-      type: "status",
-      text: "usage updated: 10/100",
-      tag: "usage_update",
-      used: 10,
-      size: 100,
-    });
-    await projector.onEvent({
-      type: "status",
-      text: "usage updated: 11/100",
-      tag: "usage_update",
-      used: 11,
-      size: 100,
-    });
-    await projector.onEvent({
-      type: "text_delta",
-      text: "hello",
-      tag: "agent_message_chunk",
-    });
-    await projector.flush(true);
-
-    expect(deliveries).toEqual([
-      { kind: "tool", text: prefixSystemMessage("usage updated: 10/100") },
-      { kind: "block", text: "hello" },
-    ]);
-  });
-
   it("supports tagVisibility overrides for tool updates", async () => {
     const deliveries: Array<{ kind: string; text?: string }> = [];
     const projector = createAcpReplyProjector({

src/auto-reply/reply/acp-projector.ts

@@ -195,7 +195,6 @@ export function createAcpReplyProjector(params: {
   const liveIdleFlushMs = Math.max(streaming.coalescing.idleMs, ACP_LIVE_IDLE_FLUSH_FLOOR_MS);
 
   let emittedTurnChars = 0;
-  let emittedMetaEvents = 0;
   let truncationNoticeEmitted = false;
   let lastStatusHash: string | undefined;
   let lastToolHash: string | undefined;
@@ -264,7 +263,6 @@ export function createAcpReplyProjector(params: {
     blockReplyPipeline.stop();
     blockReplyPipeline = createTurnBlockReplyPipeline();
     emittedTurnChars = 0;
-    emittedMetaEvents = 0;
     truncationNoticeEmitted = false;
     lastStatusHash = undefined;
     lastToolHash = undefined;
@@ -295,21 +293,10 @@ export function createAcpReplyProjector(params: {
     await blockReplyPipeline.flush({ force });
   };
 
-  const consumeMetaQuota = (force: boolean): boolean => {
-    if (force) {
-      return true;
-    }
-    if (emittedMetaEvents >= settings.maxMetaEventsPerTurn) {
-      return false;
-    }
-    emittedMetaEvents += 1;
-    return true;
-  };
-
   const emitSystemStatus = async (
     text: string,
     meta?: AcpProjectedDeliveryMeta,
-    opts?: { force?: boolean; dedupe?: boolean },
+    opts?: { dedupe?: boolean },
   ) => {
     if (!params.shouldSendToolSummaries) {
       return;
@@ -324,9 +311,6 @@ export function createAcpReplyProjector(params: {
     if (shouldDedupe && lastStatusHash === hash) {
       return;
     }
-    if (!consumeMetaQuota(opts?.force === true)) {
-      return;
-    }
     if (settings.deliveryMode === "final_only") {
       pendingToolDeliveries.push({
         payload: { text: formatted },
@@ -339,10 +323,7 @@ export function createAcpReplyProjector(params: {
     lastStatusHash = hash;
   };
 
-  const emitToolSummary = async (
+  const emitToolSummary = async (event: Extract<AcpRuntimeEvent, { type: "tool_call" }>) => {
-    event: Extract<AcpRuntimeEvent, { type: "tool_call" }>,
-    opts?: { force?: boolean },
-  ) => {
     if (!params.shouldSendToolSummaries) {
       return;
     }
@@ -386,9 +367,6 @@ export function createAcpReplyProjector(params: {
       }
     }
 
-    if (!consumeMetaQuota(opts?.force === true)) {
-      return;
-    }
     const deliveryMeta: AcpProjectedDeliveryMeta = {
       ...(event.tag ? { tag: event.tag } : {}),
       ...(toolCallId ? { toolCallId } : {}),
@@ -418,7 +396,6 @@ export function createAcpReplyProjector(params: {
         tag: "session_info_update",
       },
       {
-        force: true,
         dedupe: false,
       },
     );

src/auto-reply/reply/acp-stream-settings.test.ts

@@ -13,7 +13,6 @@ describe("acp stream settings", () => {
     expect(settings.hiddenBoundarySeparator).toBe("paragraph");
     expect(settings.repeatSuppression).toBe(true);
     expect(settings.maxTurnChars).toBe(24_000);
-    expect(settings.maxMetaEventsPerTurn).toBe(64);
   });
 
   it("applies explicit stream overrides", () => {
@@ -26,7 +25,6 @@ describe("acp stream settings", () => {
             hiddenBoundarySeparator: "space",
             repeatSuppression: false,
             maxTurnChars: 500,
-            maxMetaEventsPerTurn: 7,
             tagVisibility: {
               usage_update: true,
             },
@@ -38,7 +36,6 @@ describe("acp stream settings", () => {
     expect(settings.hiddenBoundarySeparator).toBe("space");
     expect(settings.repeatSuppression).toBe(false);
     expect(settings.maxTurnChars).toBe(500);
-    expect(settings.maxMetaEventsPerTurn).toBe(7);
     expect(settings.tagVisibility.usage_update).toBe(true);
   });
 

src/auto-reply/reply/acp-stream-settings.ts

@@ -11,7 +11,6 @@ const DEFAULT_ACP_HIDDEN_BOUNDARY_SEPARATOR_LIVE = "space";
 const DEFAULT_ACP_MAX_TURN_CHARS = 24_000;
 const DEFAULT_ACP_MAX_TOOL_SUMMARY_CHARS = 320;
 const DEFAULT_ACP_MAX_STATUS_CHARS = 320;
-const DEFAULT_ACP_MAX_META_EVENTS_PER_TURN = 64;
 
 export const ACP_TAG_VISIBILITY_DEFAULTS: Record<AcpSessionUpdateTag, boolean> = {
   agent_message_chunk: true,
@@ -36,7 +35,6 @@ export type AcpProjectionSettings = {
   maxTurnChars: number;
   maxToolSummaryChars: number;
   maxStatusChars: number;
-  maxMetaEventsPerTurn: number;
   tagVisibility: Partial<Record<AcpSessionUpdateTag, boolean>>;
 };
 
@@ -127,14 +125,6 @@ export function resolveAcpProjectionSettings(cfg: OpenClawConfig): AcpProjection
       min: 64,
       max: 8_000,
     }),
-    maxMetaEventsPerTurn: clampPositiveInteger(
-      stream?.maxMetaEventsPerTurn,
-      DEFAULT_ACP_MAX_META_EVENTS_PER_TURN,
-      {
-        min: 1,
-        max: 2_000,
-      },
-    ),
     tagVisibility: stream?.tagVisibility ?? {},
   };
 }

src/config/schema.help.ts

@@ -183,8 +183,6 @@ export const FIELD_HELP: Record<string, string> = {
   "acp.stream.maxToolSummaryChars":
     "Maximum characters for projected ACP tool lifecycle/progress summary lines.",
   "acp.stream.maxStatusChars": "Maximum characters for projected ACP status/meta lines.",
-  "acp.stream.maxMetaEventsPerTurn":
-    "Maximum ACP meta events projected per turn (text deltas continue unaffected).",
   "acp.stream.tagVisibility":
     "Per-sessionUpdate visibility overrides for ACP projection (for example usage_update, available_commands_update).",
   "acp.runtime.ttlMinutes":

src/config/schema.labels.ts

@@ -375,7 +375,6 @@ export const FIELD_LABELS: Record<string, string> = {
   "acp.stream.maxTurnChars": "ACP Stream Max Turn Chars",
   "acp.stream.maxToolSummaryChars": "ACP Stream Max Tool Summary Chars",
   "acp.stream.maxStatusChars": "ACP Stream Max Status Chars",
-  "acp.stream.maxMetaEventsPerTurn": "ACP Stream Max Meta Events Per Turn",
   "acp.stream.tagVisibility": "ACP Stream Tag Visibility",
   "acp.runtime.ttlMinutes": "ACP Runtime TTL (minutes)",
   "acp.runtime.installCommand": "ACP Runtime Install Command",

src/config/types.acp.ts

@@ -22,8 +22,6 @@ export type AcpStreamConfig = {
   maxToolSummaryChars?: number;
   /** Maximum visible characters for status lines. */
   maxStatusChars?: number;
-  /** Maximum number of meta events projected per turn. */
-  maxMetaEventsPerTurn?: number;
   /**
    * Per-sessionUpdate visibility overrides.
    * Keys not listed here fall back to OpenClaw defaults.

src/config/zod-schema.ts

@@ -352,7 +352,6 @@ export const OpenClawSchema = z
             maxTurnChars: z.number().int().positive().optional(),
             maxToolSummaryChars: z.number().int().positive().optional(),
             maxStatusChars: z.number().int().positive().optional(),
-            maxMetaEventsPerTurn: z.number().int().positive().optional(),
             tagVisibility: z.record(z.string(), z.boolean()).optional(),
           })
           .strict()

temp/acp-meta-event-dedup-implementation-plan-2026-03-01.md

@@ -25,7 +25,6 @@ Use only these ACP stream controls for this behavior:
   - `maxTurnChars`
   - `maxToolSummaryChars`
   - `maxStatusChars`
-  - `maxMetaEventsPerTurn`
 
 Removed from plan/config: