fix(zapier): harden null-body handling and error messages

From an independent review pass:
- Guard search / get / add against a null or empty 2xx body (previously an
  uncaught TypeError on .results / .status); return [] or an empty object.
- Stringify non-string API error detail so a thrown message never renders as
  "[object Object]".
- Correct the Add sample to the default no-wait shape {event_id, status}.
- Add a regression unit test for the null-body path.

Verified: build + zapier validate + 16 tests (13 unit, 3 live E2E), plus a
live check of the v3-add to /v1/event poll cross-version path.

integrations/zapier-mem0/src/creates/add_memory.ts

@@ -77,7 +77,9 @@ const perform = async (z: ZObject, bundle: Bundle): Promise<AddResponse | EventR
 		body,
 	});
 
-	const data = response.data as AddResponse;
+	// Default to an empty object so an empty/no-content 2xx body can't crash the
+	// `.status` / `.event_id` reads below.
+	const data = (response.data ?? {}) as AddResponse;
 
 	// Add returns {event_id, status:PENDING|RUNNING}; poll only when opted in.
 	if (wait && data.event_id && data.status !== 'SUCCEEDED' && data.status !== 'FAILED') {
@@ -160,6 +162,7 @@ export default {
 					'longer than Zapier allows this step to run, and a timeout does not mean the add failed.',
 			},
 		],
-		sample: { status: 'SUCCEEDED', event_id: '00000000-0000-0000-0000-000000000000', results: [] },
+		// Default (no-wait) returns the accepted event; the wait path returns the resolved event.
+		sample: { event_id: '00000000-0000-0000-0000-000000000000', status: 'PENDING' },
 	},
 };

integrations/zapier-mem0/src/middleware.ts

@@ -35,11 +35,11 @@ export const handleBadResponses = (
 	}
 	if (response.status >= 400) {
 		const data = (response.data as Record<string, unknown>) || {};
-		const detail = (data.detail ||
-			data.error ||
-			data.message ||
-			response.content ||
-			'unknown error') as string;
+		const raw =
+			data.detail || data.error || data.message || response.content || 'unknown error';
+		// DRF sometimes returns detail as an object/array; stringify so the
+		// thrown message never renders as "[object Object]".
+		const detail = typeof raw === 'string' ? raw : JSON.stringify(raw);
 		throw new z.errors.Error(
 			`Mem0 API request failed (HTTP ${response.status}): ${detail}`,
 			'Mem0ApiError',

integrations/zapier-mem0/src/searches/get_memories.ts

@@ -16,8 +16,9 @@ const perform = async (z: ZObject, bundle: Bundle): Promise<Memory[]> => {
 		},
 		body,
 	});
-	const data = response.data as Memory[] | { results?: Memory[] };
-	return Array.isArray(data) ? data : data.results || [];
+	// Guard against a null/empty body; always return an array.
+	const data = response.data as Memory[] | { results?: Memory[] } | null;
+	return Array.isArray(data) ? data : data?.results ?? [];
 };
 
 export default {

integrations/zapier-mem0/src/searches/search_memories.ts

@@ -16,9 +16,9 @@ const perform = async (z: ZObject, bundle: Bundle): Promise<Memory[]> => {
 		method: 'POST',
 		body,
 	});
-	// Searches must return an array.
-	const data = response.data as Memory[] | { results?: Memory[] };
-	return Array.isArray(data) ? data : data.results || [];
+	// Searches must return an array; guard against a null/empty body.
+	const data = response.data as Memory[] | { results?: Memory[] } | null;
+	return Array.isArray(data) ? data : data?.results ?? [];
 };
 
 export default {

integrations/zapier-mem0/test/unit.test.ts

@@ -124,6 +124,18 @@ describe('search / get array-shape enforcement (offline)', () => {
 		} as any);
 		expect(z.requests[0].params).toEqual({ page: 2, page_size: 10 });
 	});
+
+	it('search and get_memories return [] on a null/empty body (no crash)', async () => {
+		const zSearch = makeZ([{ data: null }]);
+		const found = await searchMemories.operation.perform(zSearch, {
+			inputData: { query: 'x', user_id: 'u1' },
+		} as any);
+		expect(found).toEqual([]);
+
+		const zGet = makeZ([{ data: null }]);
+		const all = await getMemories.operation.perform(zGet, { inputData: { user_id: 'u1' } } as any);
+		expect(all).toEqual([]);
+	});
 });
 
 describe('delete_memory (offline)', () => {