Track changes to the connected OneDrive
Track changes to the connected OneDrive. Returns change records, not items. a deleted entry has deleted: true and no name, because Graph does not send one. Pass the returned cursor back as ?cursor= to continue, or to poll for what has changed since. Use…
Request
- x-api-key: <your-api-key>
- Content-Type: application/json
This operation is read-only. Change the path values above and send.
Response
{
"changes": [
{
"deleted": false,
"id": "evt_991966",
"kind": "standard",
"lastModifiedDateTime": "2026-09-08T10:00:00Z",
"mimeType": "application/pdf",
"name": "Ada Lovelace",
"parentId": "par_723253",
"size": 1024
}
],
"cursor": "<cursor>",
"hasMore": true,
"status": "success",
"tokensDeducted": 1
}What it does
Track changes to the connected OneDrive. Returns change records, not items. a deleted entry has deleted: true and no name, because Graph does not send one. Pass the returned cursor back as ?cursor= to continue, or to poll for what has changed since. Use ?from=latest to start from now without enumerating the drive. DEDUPE BY id: Graph repeats entries across pages (the drive root appeared on every page of a measured 3-page feed) and does not hold to the page size encoded in the cursor. apply changes last-write-wins
Request
Parameters
| Field | In | Type | Required | Description |
|---|---|---|---|---|
accountId | query | string | no | Which connected Microsoft account to use, when more than one is connected |
top | query | integer | no | |
from | query | enum | no | Only value is "latest": returns an empty page plus a cursor positioned at now. |
cursor | query | string | no | A cursor from a previous response. Mutually exclusive with top and from. |
Response
| Field | Type | Description |
|---|---|---|
changes | array<object> | |
↳ deleted | boolean | |
↳ id | string | |
↳ kind | string | "folder", "file", or null when deleted |
↳ lastModifiedDateTime | string | |
↳ mimeType | string | |
↳ name | string | null on a deleted entry -- Graph omits it |
↳ parentId | string | |
↳ size | integer | |
cursor | string | Present whenever Graph returns a nextLink or deltaLink. When hasMore is true it continues this change set; otherwise it is the resume point for the next poll. Opaque -- do not parse it. |
hasMore | boolean | true when more pages of this change set remain |
status | string | |
tokensDeducted | integer |
Example response
{
"changes": [
{
"deleted": false,
"id": "evt_991966",
"kind": "standard",
"lastModifiedDateTime": "2026-09-08T10:00:00Z",
"mimeType": "application/pdf",
"name": "Ada Lovelace",
"parentId": "par_723253",
"size": 1024
}
],
"cursor": "<cursor>",
"hasMore": true,
"status": "success",
"tokensDeducted": 1
}Errors
Every error answers with the same envelope: an HTTP status, a machine code and a sentence.
400 | The body or a parameter failed validation. The details array names the field. |
401 | No key, a revoked key or a wrong header. Send x-api-key. |
402 | The wallet cannot cover this call. Top up or wait for the monthly grant. |
404 | The resource does not exist, or it is not yours. Both answer identically and cost nothing. |
429 | Over the per-minute quota of your tier. Back off and retry. |
5xx | Upstream refused or timed out. The call is not billed. |
Code
curl -X GET 'https://app.castomapi.com/v1/microsoft/drive/delta' \ -H 'x-api-key: <your-api-key>'
const res = await fetch('https://app.castomapi.com/v1/microsoft/drive/delta', {
method: 'GET',
headers: { 'x-api-key': '<your-api-key>' }
});
const data = await res.json();
console.log(data);import { request } from 'node:https';
// Node 18+ has fetch built in
const res = await fetch('https://app.castomapi.com/v1/microsoft/drive/delta', {
method: 'GET',
headers: { 'x-api-key': '<your-api-key>' }
});
const data = await res.json();
console.log(data);import requests
res = requests.get(
'https://app.castomapi.com/v1/microsoft/drive/delta',
headers={'x-api-key': '<your-api-key>'},
timeout=30,
)
print(res.json())<?php
$ch = curl_init('https://app.castomapi.com/v1/microsoft/drive/delta');
curl_setopt_array($ch, [
CURLOPT_CUSTOMREQUEST => 'GET',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => ['x-api-key: <your-api-key>', 'Content-Type: application/json'],
]);
$data = json_decode(curl_exec($ch), true);
print_r($data);Cost and limits
This operation costs 1 token. A call that fails is never billed. Every account gets 1000 free tokens a month; paid balances never expire.
Rate limits per minute
| No key | 10 |
| Free | 60 |
| Pro | 300 |
| Enterprise | 1200 |
Questions
What does Track changes to the connected OneDrive cost?
1 token per successful call, debited from your wallet after the response. Failed calls are free. Every account receives 1000 free tokens a month.
How do I authenticate?
Send your key in the x-api-key header. One key covers every metered endpoint; there is nothing to enable per endpoint.
Can I send an Authorization: Bearer token instead?
Not for a metered endpoint — those take the x-api-key header and nothing else. Bearer tokens belong to the account side: the dashboard and account APIs accept a JWT session, and castomapi-auth issues those through a standard OAuth2 handshake, with authorization code, client credentials and refresh grants. The auth service page covers it.
What are the limits?
10 requests a minute per IP with no key at all, 60 a minute on the free tier, 300 on Pro, 1200 on Enterprise. Above the no-key tier the quota is per account, across every endpoint.
OpenAPI: https://app.castomapi.com/docs/json