fix(tools): keep tool errors concise

CHANGELOG.md

@@ -28,6 +28,7 @@
 - ClawdbotKit: fix SwiftPM resource bundling path for `tool-display.json`. Thanks @fcatuhe for PR #398.
 - Tools: add Telegram/WhatsApp reaction tools (with per-provider gating). Thanks @zats for PR #353.
 - Tools: flatten literal-union schemas for Claude on Vertex AI. Thanks @carlulsoe for PR #409.
+- Tools: keep tool failure logs concise (no stack traces); full stack only in debug logs.
 - Tools: unify reaction removal semantics across Discord/Slack/Telegram/WhatsApp and allow WhatsApp reaction routing across accounts.
 - Android: fix APK output filename renaming after AGP updates. Thanks @Syhids for PR #410.
 - Android: rotate camera photos by EXIF orientation. Thanks @fcatuhe for PR #403.

src/agents/pi-embedded-helpers.test.ts

@@ -1,6 +1,5 @@
-import { describe, expect, it } from "vitest";
-
 import type { AssistantMessage } from "@mariozechner/pi-ai";
+import { describe, expect, it } from "vitest";
 
 import {
   buildBootstrapContextFiles,

src/agents/pi-tool-definition-adapter.test.ts

@@ -22,6 +22,7 @@ describe("pi tool definition adapter", () => {
       status: "error",
       tool: "boom",
     });
-    expect(JSON.stringify(result.details)).toContain("nope");
+    expect(result.details).toMatchObject({ error: "nope" });
+    expect(JSON.stringify(result.details)).not.toContain("\n    at ");
   });
 });

src/agents/pi-tool-definition-adapter.ts

@@ -4,12 +4,23 @@ import type {
   AgentToolUpdateCallback,
 } from "@mariozechner/pi-agent-core";
 import type { ToolDefinition } from "@mariozechner/pi-coding-agent";
-import { logError } from "../logger.js";
+import { logDebug, logError } from "../logger.js";
 import { jsonResult } from "./tools/common.js";
 
 // biome-ignore lint/suspicious/noExplicitAny: TypeBox schema type from pi-agent-core uses a different module instance.
 type AnyAgentTool = AgentTool<any, unknown>;
 
+function describeToolExecutionError(err: unknown): {
+  message: string;
+  stack?: string;
+} {
+  if (err instanceof Error) {
+    const message = err.message?.trim() ? err.message : String(err);
+    return { message, stack: err.stack };
+  }
+  return { message: String(err) };
+}
+
 export function toToolDefinitions(tools: AnyAgentTool[]): ToolDefinition[] {
   return tools.map((tool) => {
     const name = tool.name || "tool";
@@ -37,13 +48,15 @@ export function toToolDefinitions(tools: AnyAgentTool[]): ToolDefinition[] {
               ? String((err as { name?: unknown }).name)
               : "";
           if (name === "AbortError") throw err;
-          const message =
+          const described = describeToolExecutionError(err);
-            err instanceof Error ? (err.stack ?? err.message) : String(err);
+          if (described.stack && described.stack !== described.message) {
-          logError(`[tools] ${tool.name} failed: ${message}`);
+            logDebug(`tools: ${tool.name} failed stack:\n${described.stack}`);
+          }
+          logError(`[tools] ${tool.name} failed: ${described.message}`);
           return jsonResult({
             status: "error",
             tool: tool.name,
-            error: message,
+            error: described.message,
           });
         }
       },