trying to paginate /api/v2/analytics/conversations/details/query from the electron main process. first call returns a valid nextPageCursor, but injecting it into request two triggers a 400 Bad Request with invalid cursor format. it’s kinda weird since the swagger spec implies cursor pagination is native here, yet the json response never populates nextPageToken. just passing the raw string directly into nextPageCursor in the query params. headers look identical across both calls.
think you might be mixing up the query params. the analytics endpoints don’t use nextPageToken in the JSON body for pagination control, they rely strictly on the nextPageCursor query parameter in the URL.
the issue is usually how the cursor is passed. if you’re building the URL manually in Go, make sure you’re not double-encoding it or wrapping it in quotes. the API expects the raw string value directly in the query string.
here’s how i handle it in my Go client using the standard url.Values to avoid encoding headaches:
params := url.Values{}
params.Add("nextPageCursor", nextPageCursor) // raw string from previous response
params.Add("dateFrom", "2023-10-01T00:00:00.000Z")
params.Add("dateTo", "2023-10-01T23:59:59.999Z")
req, _ := http.NewRequest("GET", "/api/v2/analytics/conversations/details/query?"+params.Encode(), nil)
also check if your dateFrom and dateTo range is too wide. sometimes the cursor expires or becomes invalid if the query window shifts between requests. keep the range consistent.
yeah, ’s on the right track about the query param, but the “invalid cursor format” usually means the string is getting mangled during transport. i’ve seen this exact 400 when the cursor contains characters that get double-encoded or stripped by middleware.
if you’re hitting this from a lambda or any node.js service, don’t rely on URLSearchParams to append it if you’re building the string manually. just ensure it’s passed as a raw value. also, check if your client library is automatically URL-encoding it twice.
here’s a quick test using axios to isolate the issue. notice how i’m explicitly setting the param without extra encoding:
const axios = require('axios');
async function fetchPage(baseUrl, cursor) {
try {
const response = await axios.get(baseUrl, {
params: {
// pass the raw cursor string here
nextPageCursor: cursor
},
headers: {
'Authorization': `Bearer ${token}`,
'Content-Type': 'application/json'
}
});
return response.data;
} catch (error) {
// check if it's a 400 specifically
if (error.response && error.response.status === 400) {
console.error('Cursor rejected:', cursor);
console.error('Payload:', JSON.stringify(error.response.data));
}
throw error;
}
}
if that still fails, the cursor might be stale. analytics queries can invalidate cursors if the underlying data changes during the pagination window, which is rare but possible during high-volume publish events. try setting pageSize to something small like 100 to see if it stabilizes.
be careful with that cursor handling. the 400 you’re seeing isn’t just about double-encoding. it’s often because the cursor contains characters that get stripped or mangled by standard URL parsers if you aren’t treating it as an opaque blob.
i automate this via python scripts for bulk data extraction, and i’ve hit this exact wall when using requests with params. if you pass the cursor as a standard param, the library might try to decode/encode it based on its internal charset rules, corrupting the base64url string.
here’s how i handle it in my CI/CD pipelines to ensure the cursor stays intact:
import requests
from urllib.parse import urlencode
base_url = "https://api.mypurecloud.com/api/v2/analytics/conversations/details/query"
headers = {"Authorization": f"Bearer {access_token}", "Content-Type": "application/json"}
# initial payload
payload = {
"groupBy": ["conversationId"],
"dateFrom": "2023-10-01T00:00:00.000Z",
"dateTo": "2023-10-02T00:00:00.000Z",
"pageSize": 20
}
response = requests.post(base_url, json=payload, headers=headers)
data = response.json()
if "nextPageCursor" in data:
cursor = data["nextPageCursor"]
# critical: do not use requests params dict for the cursor if it contains special chars
# manually append to avoid library-side encoding issues
query_string = urlencode({"pageSize": 20})
full_url = f"{base_url}?{query_string}&nextPageCursor={cursor}"
# retry with explicit headers to prevent any middleware from touching the body
resp2 = requests.post(full_url, json=payload, headers=headers)
if resp2.status_code == 400:
print(f"cursor mangled. raw value sent: {cursor}")
also, watch out for rate limits on these queries. if you’re looping through pages rapidly, you’ll hit the 429s before you even finish pagination. add a small sleep between requests. i usually batch these and use exponential backoff.
the swagger spec is vague on this, but the reality is the cursor is a signed token. if you treat it like a normal string, it breaks.
check if your fetch wrapper is stripping special characters from the cursor. i ran into this while embedding the messenger widget because my proxy was sanitizing query params. the cursor isn’t just base64, it has internal separators that some middleware treats as unsafe. if you’re using axios or a custom http client, make sure encode: false is set for that specific param or bypass the param builder entirely. here’s how i force it raw in my electron app to avoid the 400.
const baseUrl = 'https://api.mypurecloud.com/api/v2/analytics/conversations/details/query';
// do not use URLSearchParams for the cursor
const url = `${baseUrl}?nextPageCursor=${rawCursorFromPrevResponse}`;
const response = await fetch(url, {
headers: {
'Authorization': `Bearer ${token}`,
'Content-Type': 'application/json'
}
});
it’s annoying that the docs don’t scream this out loud. just paste the string directly into the url template. don’t let the library touch it.