fix: handle pipes without tools

packages/core/src/pipes/pipes.issue-155.test.ts

@@ -0,0 +1,36 @@
+import {describe, expect, it, vi} from 'vitest';
+import {Pipe, type RunResponse} from './pipes';
+
+describe('Pipe without tools', () => {
+	it('runs when the pipe omits the optional tools array', async () => {
+		const pipe = new Pipe({
+			apiKey: 'test-api-key',
+			model: 'openai:gpt-4o-mini',
+			name: 'without-tools',
+			prod: true,
+			tools: undefined,
+		} as any);
+		const response: RunResponse = {
+			completion: 'done',
+			id: 'response-id',
+			object: 'chat.completion',
+			created: 0,
+			model: 'gpt-4o-mini',
+			choices: [
+				{
+					index: 0,
+					message: {role: 'assistant', content: 'done'},
+					logprobs: null,
+					finish_reason: 'stop',
+				},
+			],
+			usage: {prompt_tokens: 1, completion_tokens: 1, total_tokens: 2},
+			system_fingerprint: null,
+		};
+		const post = vi.fn().mockResolvedValue(response);
+		(pipe as any).request = {post};
+
+		await expect(pipe.run({messages: []})).resolves.toEqual(response);
+		expect(post).toHaveBeenCalledOnce();
+	});
+});

packages/core/src/pipes/pipes.ts

@@ -261,7 +261,7 @@ export class Pipe {
 		const providerString = this.pipe.model.split(':')[0];
 		const modelProvider = getProvider(providerString);
 		const isAnthropic = modelProvider === ANTHROPIC;
-		const hasTools = this.pipe.tools.length > 0;
+    const hasTools = this.hasTools;
 
 		// For SDK
 		// Run the given pipe name