feat(core): Add parse-file tool for structured attachments (no-changelog) (n8n-io#28251)

Author: aalises

packages/@n8n/api-types/src/schemas/instance-ai.schema.ts

@@ -545,17 +545,17 @@ export type InstanceAiFilesystemResponse = z.infer<typeof instanceAiFilesystemRe
 // ---------------------------------------------------------------------------
 
 const instanceAiAttachmentSchema = z.object({
-	data: z.string(),
-	mimeType: z.string(),
-	fileName: z.string(),
+	data: z.string().max(700_000), // ~512 KB decoded + base64 overhead
+	mimeType: z.string().max(100),
+	fileName: z.string().max(300),
 });
 
 export type InstanceAiAttachment = z.infer<typeof instanceAiAttachmentSchema>;
 
 export class InstanceAiSendMessageRequest extends Z.class({
-	message: z.string().min(1),
+	message: z.string().default(''),
 	researchMode: z.boolean().optional(),
-	attachments: z.array(instanceAiAttachmentSchema).optional(),
+	attachments: z.array(instanceAiAttachmentSchema).max(10).optional(),
 	timeZone: TimeZoneSchema,
 	pushRef: z.string().optional(),
 }) {}

packages/@n8n/instance-ai/package.json

@@ -39,6 +39,7 @@
     "@n8n/workflow-sdk": "workspace:*",
     "linkedom": "^0.18.9",
     "luxon": "catalog:",
+    "csv-parse": "5.5.0",
     "nanoid": "catalog:",
     "p-limit": "^3.1.0",
     "pdf-parse": "^1.1.1",

packages/@n8n/instance-ai/src/index.ts

@@ -178,3 +178,12 @@ export type { StartedWorkflowBuildTask } from './tools/orchestration/build-workf
 export type { StartedBackgroundAgentTask } from './tools/orchestration/data-table-agent.tool';
 export type { DetachedDelegateTaskResult } from './tools/orchestration/delegate.tool';
 export type { StartedResearchAgentTask } from './tools/orchestration/research-with-agent.tool';
+export {
+	classifyAttachments,
+	buildAttachmentManifest,
+	isStructuredAttachment,
+} from './parsers/structured-file-parser';
+export type {
+	ClassifiedAttachment,
+	ParseableFormat,
+} from './parsers/structured-file-parser';