---
title: sync.changes | Doing Work API
description: Invoices, payments, refunds and customers that changed since a time or cursor, oldest change first, each with its current details and outside ids. Run it o
url: https://doingwork.work/docs/reference/sync-changes/
---

# sync.changes

Invoices, payments, refunds and customers that changed since a time or cursor, oldest change first, each with its current details and outside ids. Run it on the shop's own schedule and save next_cursor for the next run. With system and unsynced true, only records with no outside id for that system are returned.

|  |  |
|---|---|
| Who | Agents can call this |
| REST | `GET /v1/sync/changes` |
| MCP tool | `sync_changes` |
| Writes | no |
| Area | [Shop](https://doingwork.work/docs/reference/#shop) |

## When to use it

Doing Work does not connect to QuickBooks itself. Your agent does the sync, on the schedule the shop picks: daily is a good default, and the shop can ask for more or less often.

## What to tell the owner

Tell them what you found in plain words. Don't read back raw fields.

## Input

| Field | Type | Required |
|---|---|---|
| `shop_id` | string | yes |
| `updated_since` | string | no |
| `cursor` | string | no |
| `kinds` | array | no |
| `system` | string | no |
| `unsynced` | boolean | no |
| `limit` | integer | no |

## Example

```http
GET https://doingwork.work/v1/sync/changes?shop_id=00000000-0000-4000-8000-000000000000
```

## Output

| Field | Type | Always there |
|---|---|---|
| `data` | array | yes |
| `data[].kind` | string | yes |
| `data[].id` | string (uuid) | yes |
| `data[].seq` | integer | yes |
| `data[].changed_at` | string (date-time) | yes |
| `data[].last_event` | string | yes |
| `data[].data` | ['object', 'null'] | yes |
| `data[].external_refs` | object | yes |
| `next_cursor` | ['string', 'null'] | yes |
| `has_more` | boolean | yes |

```json
{
  "data": [
    {
      "kind": "...",
      "id": "00000000-0000-4000-8000-000000000000",
      "seq": 1,
      "changed_at": "...",
      "last_event": "...",
      "data": "...",
      "external_refs": {}
    }
  ],
  "next_cursor": "...",
  "has_more": true
}
```

## Errors

| Code | Status | What to do |
|---|---|---|
| `invalid_input`, `invalid_token`, `rate_limited` |  | Can happen on any call. See [errors](https://doingwork.work/docs/errors/). |