How can I upload multiple files as input? I couldn’t find a solution, and when I tried sending them as base64, the request became too large

[BirajMainali]

import { ApiRouteConfig, Handlers } from 'motia'
import { z } from 'zod'

export const config: ApiRouteConfig = {
  type: 'api',
  name: 'document-ingest-api',
  description: 'API trigger for document ingestion',
  flows: ['document-ingest'],
  method: 'POST',
  path: '/api/ingest',
  bodySchema: z.object({
    tenantId: z.string().uuid(),
    secret: z.string(),
    files: z.array(z.any())
  }),
  responseSchema: {
    200: z.object({
      message: z.string(),
      processedFiles: z.number(),
    }),
  },
  emits: ['process-file-ingest'],
}

export const handler: Handlers['document-ingest-api'] = async (req, { logger, emit }) => {

  logger.info("Step:1 - Received document ingest request", { body: req.body })

  const { tenantId, secret, files } = req.body

  logger.info("Step:2 - Validated request data", { tenantId, fileCount: files.length })

  return {
    status: 200, body: {
      message: "Document ingestion successful",
      processedFiles: files.length,
    }
  }
}

[ksaurav24]

Hey! I'm also trying to parse multipart/form-data in a request handler but can't find a proper solution for this, did you find any solution for this?

[NabinDevX]

import { ApiRouteConfig, Handlers } from 'motia'
import { z } from 'zod'
import multer from 'multer'

// Configure multer for file uploads (memory storage)
const upload = multer({ storage: multer.memoryStorage() })

export const config: ApiRouteConfig = {
  type: 'api',
  name: 'document-ingest-api',
  description: 'API trigger for document ingestion',
  flows: ['document-ingest'],
  method: 'POST',
  path: '/api/ingest',
  bodyParser: false, // IMPORTANT → disable Motia JSON parser for form-data
  middleware: [upload.array('files')], // Accept multiple files named "files"

  bodySchema: z.object({
    tenantId: z.string().uuid(),
    secret: z.string()
  }),

  responseSchema: {
    200: z.object({
      message: z.string(),
      processedFiles: z.number(),
    }),
  },

  emits: ['process-file-ingest'],
}

export const handler: Handlers['document-ingest-api'] = async (req, { logger, emit }) => {
  const { tenantId, secret } = req.body
  const files = req.files as Express.Multer.File[]

  logger.info("Step:1 - Received document ingest request", {
    tenantId,
    fileCount: files.length
  })

  // Emit ingestion events per file
  for (const file of files) {
    await emit('process-file-ingest', {
      tenantId,
      fileName: file.originalname,
      mimeType: file.mimetype,
      buffer: file.buffer,
    })
  }

  return {
    status: 200,
    body: {
      message: "Document ingestion successful",
      processedFiles: files.length,
    }
  }
}

@BirajMainali Hey buddy check this out for a sec.

Use multer like this for uploading files