Attach files to an order

POST/orders/{id}/files/attach

Costs 2 rate-limit points · Rate limits

Attach files to this one order only (asset_ids), as the order page's Add custom files does: they appear on the buyer's download page as a line item of their own, invisible to other buyers of the same products.

No email is sent; use POST /orders/:id/send_email afterwards if the buyer should hear about it.

Also searched asadd a file to this orderattach custom filegive this customer an extra filesend a bonus file to one order

Path parameters

idstringRequired

Request body

asset_idsarray of stringsRequired

Returns

The order object.

Errors

401

Missing or invalid API key.

404

The resource does not exist for this shop, or the action path is not registered.

422

The request failed validation, or sent a key the action does not take (code: "unknown_parameters" with unknown and accepted). Nothing was saved.

429

Rate limited. Cost-weighted per API key, shared with API v1: a read costs 1 point, a write 2, 40 points per fixed 60-second window. Every response carries X-RateLimit-Limit, X-RateLimit-Remaining and X-RateLimit-Reset (Unix time the window ends); a 429 adds Retry-After (seconds), retry_after, retryable: true and a next_step in the body. A 429 did nothing: wait retry_after seconds, then send the same request again. The budget is per key, so every tool or script using the key shares it; prefer one list call with per_page over many single reads.

Every error has the same shape: see Errors.

POST/orders/{id}/files/attach

curl -X POST "https://app.filemonk.io/api/v2/external/orders/3e84eb8d-e1d9-4e92-a4b2-a419c7f1122f/files/attach" \
  -H "X-Auth-Token: $FILEMONK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "asset_ids": [
      "e2b7727e-45ad-42b7-b842-cc4615205b10"
    ]
  }'

const res = await fetch("https://app.filemonk.io/api/v2/external/orders/3e84eb8d-e1d9-4e92-a4b2-a419c7f1122f/files/attach", {
  method: "POST",
  headers: {
    "X-Auth-Token": process.env.FILEMONK_API_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "asset_ids": [
      "e2b7727e-45ad-42b7-b842-cc4615205b10"
    ]
  }),
});
const data = await res.json();

import os
import requests

res = requests.post(
    "https://app.filemonk.io/api/v2/external/orders/3e84eb8d-e1d9-4e92-a4b2-a419c7f1122f/files/attach",
    headers={"X-Auth-Token": os.environ["FILEMONK_API_KEY"]},
    json={
        "asset_ids": [
            "e2b7727e-45ad-42b7-b842-cc4615205b10"
        ]
    },
)
data = res.json()

require "net/http"
require "json"

uri = URI("https://app.filemonk.io/api/v2/external/orders/3e84eb8d-e1d9-4e92-a4b2-a419c7f1122f/files/attach")
req = Net::HTTP::Post.new(uri, "X-Auth-Token" => ENV["FILEMONK_API_KEY"], "Content-Type" => "application/json")
req.body = {
  asset_ids: [
    "e2b7727e-45ad-42b7-b842-cc4615205b10"
  ]
}.to_json
res = Net::HTTP.start(uri.host, uri.port, use_ssl: true) { |http| http.request(req) }
data = JSON.parse(res.body)

Response

{
  "id": "3e84eb8d-e1d9-4e92-a4b2-a419c7f1122f",
  "shopify_order_id": "gid://shopify/Order/7555375595815",
  "name": "#1077",
  "confirmation_number": "H5CZG3GZX",
  "ordered_at": "2026-10-26T14:19:15Z",
  "customer": {
    "id": "b797db3a-cbc3-4643-804f-adf34c7f08d7",
    "shopify_customer_id": "gid://shopify/Customer/9026290417959",
    "email": "shopper@example.com",
    "phone": null,
    "first_name": "Jane",
    "last_name": "Doe",
    "country_code": null,
    "locale": null,
    "unsubscribed": false
  },
  "total": {
    "amount": "1142.89",
    "currency": "INR"
  },
  "status": {
    "financial": "paid",
    "fulfillment": "unfulfilled",
    "cancelled_at": null,
    "paid_at": "2026-10-30T21:48:16Z",
    "flagged_as_fraud": false,
    "fraud_check_completed": false,
    "marked_fulfilled_at": null,
    "delivery_conditions_met": false
  },
  "access": {
    "state": "active",
    "revoked_at": null,
    "available_until": null,
    "download_reset_at": "2026-10-30T22:19:10Z",
    "downloads_count": 0
  },
  "delivery": {
    "email_sent_at": "2026-10-30T22:34:30Z",
    "delivery_failed_at": null,
    "download_page_url": "https://example-store.myshopify.com/apps/filemonk/orders/3e84eb8d-e1d9-4e92-a4b2-a419c7f1122f",
    "source": "webhook"
  },
  "line_items": [
    {
      "id": "5956bb41-dc65-45d5-b7d7-25f570598468",
      "digital_product_id": "7ea3c05d-6f29-42b6-b24f-43260caeaa32",
      "title": "Watercolour Course",
      "sku": "b0f5fbd0-f231-470f-b3d1-a392e3136a50",
      "quantity": 2,
      "shopify_line_item_id": "gid://shopify/LineItem/18329329434919",
      "shopify_product_id": "gid://shopify/Product/9642107044135",
      "shopify_variant_id": "gid://shopify/ProductVariant/49417714893095",
      "attached_to_this_order_only": false,
      "access": {
        "revoked": false,
        "revoked_at": null
      },
      "preorder": {
        "enabled": false,
        "launch_at": null,
        "released": true,
        "message": null
      },
      "files": [
        {
          "id": null,
          "asset": {
            "id": "7ea42f2a-6dbe-459c-b8a4-27b0eb823e52",
            "name": "price-list.csv",
            "type": "file"
          },
          "download_count": 0,
          "watermark": {
            "enabled": false,
            "status": "not_required"
          },
          "licence_keys": []
        },
        {
          "id": "66e2751c-9812-422c-864d-f8ce6a95c605",
          "asset": {
            "id": "96fbe30b-c819-4cb8-9666-814c0c8853f1",
            "name": "Beginner's Guide.pdf",
            "type": "file"
          },
          "download_count": 0,
          "watermark": {
            "enabled": true,
            "status": "ready"
          },
          "licence_keys": []
        }
      ]
    }
  ],
  "eu_withdrawal": {
    "consent_required": false,
    "consented_at": null,
    "consent_text": null
  },
  "shopify_tags": [],
  "imported_at": null,
  "deleted_at": null,
  "created_at": "2026-10-26T14:19:29Z",
  "updated_at": "2026-10-30T22:19:10Z"
}

{
  "errors": [
    "Invalid API key"
  ]
}

{
  "errors": [
    "Order not found: c3d4e5f6-7a8b-4c9d-8e0f-1a2b3c4d5e6f"
  ]
}

{
  "errors": [
    "access.download_limit_count must be an integer of at least 0"
  ],
  "field_errors": {
    "access.download_limit_count": [
      "must be an integer of at least 0"
    ]
  }
}

{
  "errors": [
    "You have exceeded the rate limit of 40 points per 60 seconds. Read requests cost 1 point(s) and write requests cost 2 point(s). Please retry after 12 second(s)."
  ],
  "code": "rate_limited",
  "retry_after": 12,
  "error": "Rate limit exceeded",
  "message": "You have exceeded the rate limit of 40 points per 60 seconds. Read requests cost 1 point(s) and write requests cost 2 point(s). Please retry after 12 second(s)."
}