Xero: Retrieves attachments for a specific invoice or purchase bill

← Accounting operations · Get started

Operation xero.getinvoiceattachments

Provider route: GET /api.xro/2.0/Invoices/{InvoiceID}/Attachments. Alter supplies the connection’s credentials and routing.

Call through Alter

Install @alter-ai/sdk @alter-ai/xero with npm, or alter-sdk-xero with pip. Supply your connected customer’s grant ID and the arguments described below.

import { App } from "@alter-ai/sdk";
import { XeroIntegration } from "@alter-ai/xero";

async function execute(input: Parameters<XeroIntegration["accounting"]["getInvoiceAttachments"]>[0]) {
  const app = new App({ apiKey: process.env.ALTER_API_KEY! });
  try {
    const provider = new XeroIntegration(app, { grantId: process.env.PROVIDER_GRANT_ID! });
    const call = await provider.accounting.getInvoiceAttachments(input);
    const result = await call.wait();
    return result.bodyJson();
  } finally {
    await app.close();
  }
}

import os
from alter_sdk import App
from alter_sdk_xero import XeroIntegration

async def execute(arguments):
    async with App(api_key=os.environ["ALTER_API_KEY"]) as app:
        provider = XeroIntegration(app, {"grant_id": os.environ["PROVIDER_GRANT_ID"]})
        call = await provider.accounting.get_invoice_attachments(arguments)
        result = await call.wait()
        return result.body_json()

Input

Field	Type	Presence	Description and constraints
$	object	Root	Additional keys: not allowed
path	object	Required within parent	Additional keys: not allowed
path.InvoiceID	string	Required within parent	Format: uuid
headers	object	Required within parent	Additional keys: not allowed
headers.xero-tenant-id	string	Required within parent

Response

Response media type: application/json. The table describes the pinned successful response. Referenced models link to their complete fields.

Field	Type	Presence	Description and constraints
$	Model	Root	Expand create Contact Attachment By File Name — response body

Referenced models: create Contact Attachment By File Name — response body

Schemas

create Contact Attachment By File Name — response body

Field	Type	Presence	Description and constraints
$	object	Root
Attachments	array	Optional
Attachments[]	Model	Each item	Expand create Contact Attachment By File Name — response body — Attachments item

Referenced models: create Contact Attachment By File Name — response body — Attachments item

create Contact Attachment By File Name — response body — Attachments item

Field	Type	Presence	Description and constraints
$	object	Root
AttachmentID	string	Optional	Unique ID for the file Format: uuid
ContentLength	JSON	Optional
ContentLength (anyOf 1)	integer	Alternative	Length of the file content
ContentLength (anyOf 2)	string	Alternative	Pattern: ^-?[0-9]+(?:\.[0-9]+)?(?:[eE][+-]?[0-9]+)?$
FileName	string	Optional	Name of the file
IncludeOnline	boolean	Optional	Include the file with the online invoice
MimeType	string	Optional	Type of file
Url	string	Optional	URL to the file on xero.com

Policy, approvals and errors

SDK function policy ID: xero.getinvoiceattachments. Catalog operation: getInvoiceAttachments. Rules can name either ID; function rules distinguish managed calls and conservatively cover raw calls sharing the route. Existing grant permissions and policy rules apply. wait() returns an immediate result or waits for a required approval; it never approves the request itself. Persist the approval ID to resume after a restart.

Provider errors retain their response; JSON decoding raises ProviderAPIError for provider failures. ManagedOperationError identifies contract/input/retention errors. See error handling and provider-specific behavior. Sensitive input may be refused before approval storage. A decoding error never resubmits a write.

Official provider source