From 419cfad98f7c6431404e0f39c27d64652f6a7913 Mon Sep 17 00:00:00 2001
From: bjorger <50590409+bjorger@users.noreply.github.com>
Date: Mon, 1 Jun 2026 11:01:00 +0200
Subject: [PATCH] fix(core): Display native web search results in agent session
 timeline (no-changelog) (#31420)

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 .../src/runtime/__tests__/stream.test.ts      | 60 +++++++++++++++++++
 packages/@n8n/agents/src/runtime/stream.ts    |  8 ++-
 2 files changed, 66 insertions(+), 2 deletions(-)

diff --git a/packages/@n8n/agents/src/runtime/__tests__/stream.test.ts b/packages/@n8n/agents/src/runtime/__tests__/stream.test.ts
index 63a0f46f204..1e4bfd48f8b 100644
--- a/packages/@n8n/agents/src/runtime/__tests__/stream.test.ts
+++ b/packages/@n8n/agents/src/runtime/__tests__/stream.test.ts
@@ -3,6 +3,7 @@ import type { TextStreamPart, ToolSet } from 'ai';
 import { convertChunk } from '../stream';
 
 type ToolCallChunk = Extract<TextStreamPart<ToolSet>, { type: 'tool-call' }>;
+type ToolResultChunk = Extract<TextStreamPart<ToolSet>, { type: 'tool-result' }>;
 
 describe('convertChunk — tool-call invalid/error handling', () => {
 	it('returns a tool-result with isError when c.invalid is true', () => {
@@ -78,3 +79,62 @@ describe('convertChunk — tool-call invalid/error handling', () => {
 		expect(result).toMatchObject({ type: 'tool-result', toolName: '', isError: true });
 	});
 });
+
+describe('convertChunk — tool-result output passthrough', () => {
+	it('passes a raw array output through verbatim (e.g. native web search results)', () => {
+		const output = [
+			{ title: 'n8n', url: 'https://n8n.io' },
+			{ title: 'Docs', url: 'https://docs.n8n.io' },
+		];
+		const chunk = {
+			type: 'tool-result',
+			toolCallId: 'tc-1',
+			toolName: 'anthropic.web_search_20250305',
+			input: { query: 'n8n' },
+			output,
+			providerExecuted: true,
+		} as unknown as ToolResultChunk;
+
+		expect(convertChunk(chunk)).toEqual({
+			type: 'tool-result',
+			toolCallId: 'tc-1',
+			toolName: 'anthropic.web_search_20250305',
+			output,
+		});
+	});
+
+	it('passes a raw object output through verbatim without unwrapping a coincidental "value" key', () => {
+		const output = { value: 42, unit: 'C' };
+		const chunk = {
+			type: 'tool-result',
+			toolCallId: 'tc-2',
+			toolName: 'get_temperature',
+			input: {},
+			output,
+		} as unknown as ToolResultChunk;
+
+		expect(convertChunk(chunk)).toEqual({
+			type: 'tool-result',
+			toolCallId: 'tc-2',
+			toolName: 'get_temperature',
+			output,
+		});
+	});
+
+	it('falls back to empty strings when toolCallId and toolName are absent', () => {
+		const chunk = {
+			type: 'tool-result',
+			toolCallId: undefined,
+			toolName: undefined,
+			input: {},
+			output: 'plain text result',
+		} as unknown as ToolResultChunk;
+
+		expect(convertChunk(chunk)).toEqual({
+			type: 'tool-result',
+			toolCallId: '',
+			toolName: '',
+			output: 'plain text result',
+		});
+	});
+});
diff --git a/packages/@n8n/agents/src/runtime/stream.ts b/packages/@n8n/agents/src/runtime/stream.ts
index a32ed0715b4..4f29ecef104 100644
--- a/packages/@n8n/agents/src/runtime/stream.ts
+++ b/packages/@n8n/agents/src/runtime/stream.ts
@@ -96,12 +96,16 @@ export function convertChunk(c: TextStreamPart<ToolSet>): StreamChunk | undefine
 		}
 
 		case 'tool-result':
+			// The fullStream emits the raw tool output here, not the
+			// `{ type, value }` ToolResultOutput wrapper used on the message
+			// side — so pass it through verbatim. Only provider-executed tools
+			// (e.g. native web search) reach this branch; local tool results are
+			// written directly by the runtime and never pass through convertChunk.
 			return {
 				type: 'tool-result',
 				toolCallId: c.toolCallId ?? '',
 				toolName: c.toolName ?? '',
-				// eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
-				output: c.output && 'value' in c.output ? (c.output.value as JSONValue) : null,
+				output: c.output,
 			};
 
 		case 'error':