feat: add messages.suppressToolErrors config option (#16620)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: 9ae4394b81bf0a68a5dfbcfe39fb60a21689ac49
Co-authored-by: vai-oro <258511217+vai-oro@users.noreply.github.com>
Co-authored-by: sebslight <19554889+sebslight@users.noreply.github.com>
Reviewed-by: @sebslight

CHANGELOG.md

@@ -11,6 +11,7 @@ Docs: https://docs.openclaw.ai
 - Discord: allow exec approval prompts to target channels or both DM+channel via `channels.discord.execApprovals.target`. (#16051) Thanks @leonnardo.
 - Sandbox: add `sandbox.browser.binds` to configure browser-container bind mounts separately from exec containers. (#16230) Thanks @seheepeak.
 - Discord: add debug logging for message routing decisions to improve `--debug` tracing. (#16202) Thanks @jayleekr.
+- Agents: add optional `messages.suppressToolErrors` config to hide non-mutating tool-failure warnings from user-facing chat while still surfacing mutating failures. (#16620) Thanks @vai-oro.
 
 ### Fixes
 

src/agents/pi-embedded-runner/run/payloads.e2e.test.ts

@@ -278,6 +278,42 @@ describe("buildEmbeddedRunPayloads", () => {
     expect(payloads).toHaveLength(0);
   });
 
+  it("suppresses non-mutating non-recoverable tool errors when messages.suppressToolErrors is enabled", () => {
+    const payloads = buildEmbeddedRunPayloads({
+      assistantTexts: [],
+      toolMetas: [],
+      lastAssistant: undefined,
+      lastToolError: { toolName: "browser", error: "connection timeout" },
+      config: { messages: { suppressToolErrors: true } },
+      sessionKey: "session:telegram",
+      inlineToolResultsAllowed: false,
+      verboseLevel: "off",
+      reasoningLevel: "off",
+      toolResultFormat: "plain",
+    });
+
+    expect(payloads).toHaveLength(0);
+  });
+
+  it("still shows mutating tool errors when messages.suppressToolErrors is enabled", () => {
+    const payloads = buildEmbeddedRunPayloads({
+      assistantTexts: [],
+      toolMetas: [],
+      lastAssistant: undefined,
+      lastToolError: { toolName: "write", error: "connection timeout" },
+      config: { messages: { suppressToolErrors: true } },
+      sessionKey: "session:telegram",
+      inlineToolResultsAllowed: false,
+      verboseLevel: "off",
+      reasoningLevel: "off",
+      toolResultFormat: "plain",
+    });
+
+    expect(payloads).toHaveLength(1);
+    expect(payloads[0]?.isError).toBe(true);
+    expect(payloads[0]?.text).toContain("connection timeout");
+  });
+
   it("shows recoverable tool errors for mutating tools", () => {
     const payloads = buildEmbeddedRunPayloads({
       assistantTexts: [],

src/agents/pi-embedded-runner/run/payloads.ts

@@ -233,7 +233,9 @@ export function buildEmbeddedRunPayloads(params: {
     const isMutatingToolError =
       params.lastToolError.mutatingAction ??
       isLikelyMutatingToolName(params.lastToolError.toolName);
-    const shouldShowToolError = isMutatingToolError || (!hasUserFacingReply && !isRecoverableError);
+    const shouldShowToolError =
+      isMutatingToolError ||
+      (!hasUserFacingReply && !isRecoverableError && !params.config?.messages?.suppressToolErrors);
 
     // Always surface mutating tool failures so we do not silently confirm actions that did not happen.
     // Otherwise, keep the previous behavior and only surface non-recoverable failures when no reply exists.

src/config/schema.help.ts

@@ -325,6 +325,8 @@ export const FIELD_HELP: Record<string, string> = {
     "Max reply-back turns between requester and target (0–5).",
   "channels.telegram.customCommands":
     "Additional Telegram bot menu commands (merged with native; conflicts ignored).",
+  "messages.suppressToolErrors":
+    "When true, suppress ⚠️ tool-error warnings from being shown to the user. The agent already sees errors in context and can retry. Default: false.",
   "messages.ackReaction": "Emoji reaction used to acknowledge inbound messages (empty disables).",
   "messages.ackReactionScope":
     'When to send ack reactions ("group-mentions", "group-all", "direct", "all").',

src/config/schema.labels.ts

@@ -219,6 +219,7 @@ export const FIELD_LABELS: Record<string, string> = {
   "browser.remoteCdpHandshakeTimeoutMs": "Remote CDP Handshake Timeout (ms)",
   "session.dmScope": "DM Session Scope",
   "session.agentToAgent.maxPingPongTurns": "Agent-to-Agent Ping-Pong Turns",
+  "messages.suppressToolErrors": "Suppress Tool Error Warnings",
   "messages.ackReaction": "Ack Reaction Emoji",
   "messages.ackReactionScope": "Ack Reaction Scope",
   "messages.inbound.debounceMs": "Inbound Message Debounce (ms)",

src/config/types.messages.ts

@@ -82,6 +82,8 @@ export type MessagesConfig = {
   ackReactionScope?: "group-mentions" | "group-all" | "direct" | "all";
   /** Remove ack reaction after reply is sent (default: false). */
   removeAckAfterReply?: boolean;
+  /** When true, suppress ⚠️ tool-error warnings from being shown to the user. Default: false. */
+  suppressToolErrors?: boolean;
   /** Text-to-speech settings for outbound replies. */
   tts?: TtsConfig;
 };

src/config/zod-schema.session.ts

@@ -114,6 +114,7 @@ export const MessagesSchema = z
     ackReaction: z.string().optional(),
     ackReactionScope: z.enum(["group-mentions", "group-all", "direct", "all"]).optional(),
     removeAckAfterReply: z.boolean().optional(),
+    suppressToolErrors: z.boolean().optional(),
     tts: TtsConfigSchema,
   })
   .strict()