Does anyone know the correct payload structure for the CXone Admin API when attempting to bulk-update agent skill proficiencies? I am trying to automate the assignment of specific skill levels to a group of agents using the PUT /api/v2/admin/users/{userId}/skills endpoint. However, I am consistently hitting a 400 Bad Request error, and the response body is empty, which makes debugging a nightmare.
I have verified the authentication token is valid and has the necessary admin:agent:write scope. I am sending a JSON array containing the skill ID, proficiency level, and effective date. I have double-checked the skill IDs against the GET /api/v2/admin/skills endpoint, so they are definitely correct. The user IDs are also confirmed active in the system.
Here is the payload I am sending in the request body:
[
{
"skillId": "12345678-1234-1234-1234-123456789abc",
"proficiency": 5,
"effectiveDate": "2023-10-27T00:00:00.000Z",
"expirationDate": null
},
{
"skillId": "87654321-4321-4321-4321-cba987654321",
"proficiency": 3,
"effectiveDate": "2023-10-27T00:00:00.000Z",
"expirationDate": null
}
]
I have tried the following troubleshooting steps:
- Verified the
proficiency value is an integer between 1 and 5.
- Ensured the
effectiveDate is in ISO 8601 format with milliseconds.
- Tested with a single skill in the array to rule out batch size limits.
- Checked the CXone API documentation for versioning issues, but the endpoint seems stable.
The error occurs immediately upon sending the PUT request. Is there a specific header requirement or a nested object structure I am missing? The documentation is sparse on the exact JSON schema for the bulk update payload. Any insights into what might be causing this validation failure would be appreciated.
The issue is almost certainly the payload structure for the PUT /api/v2/admin/users/{userId}/skills endpoint. The API expects a specific array of skill proficiency objects, not a flat map or a single object. If you send the wrong shape, you get that silent 400.
Here is the correct JSON structure you need to send in the body. Note that proficiency is a number between 0 and 100, and you must include the skillId for each entry.
[
{
"skillId": "5c8b8a8e-9b1a-4d3e-8f7a-1234567890ab",
"proficiency": 85
},
{
"skillId": "6d9c9b9f-0c2b-5e4f-9g8b-2345678901bc",
"proficiency": 60
}
]
In my Node.js middleware services, I usually wrap this in a simple utility function to ensure type safety before hitting the API. It helps catch these structural errors early.
const updateAgentSkills = async (platformClient, userId, skillsArray) => {
try {
// Validate structure before sending
if (!Array.isArray(skillsArray)) {
throw new Error('Skills must be an array of {skillId, proficiency} objects');
}
const response = await platformClient.UsersApi.postUsersUserSkills(userId, skillsArray);
console.log(`Successfully updated skills for user ${userId}`);
return response;
} catch (error) {
// Log detailed error for debugging
console.error('Failed to update skills:', error.body);
throw error;
}
};
Also, double-check your OAuth scopes. You need admin:users:write to modify skill proficiencies. If you are using a service account, ensure the role assigned has the “User Administrator” permissions. The empty body on the 400 is a known quirk with some admin endpoints, so always check the raw HTTP status and headers in your logs if the SDK doesn’t give you enough detail.
The documentation actually says you need to wrap the skill objects in a specific container, not just send a raw array.
I switched to using the PureCloudPlatformClientV2 SDK method updateUserSkills instead of raw HTTP, and it handled the serialization for me.
It worked immediately after I added the user:skill:write scope to my token.
Oh, this is a known issue…
Does anyone know the correct payload structure for the CXone Admin API when attempting to bulk-update agent skill proficiencies? I am trying to automate the assignment of specific skill levels to a group of agents using the PUT /api/v2/admin/users/{userId}/skills endpoint. However, I am consistently hitting a 400 Bad Request error, and the response body is empty, which makes debugging a nightmare.
The suggestion above regarding updateUserSkills is correct, but relying solely on the SDK without understanding the underlying schema often leads to silent failures when the SDK version drifts from the API spec. In my Playwright E2E suites, I bypass the high-level SDK for these bulk operations to ensure precise control over the JSON payload structure, preventing serialization mismatches.
The 400 error typically stems from an incorrect proficiency type or missing skillId. The API expects an array of Skill objects, not a map. Here is the exact structure that works reliably in my CI pipelines:
const payload = [
{
skillId: "e99267a4-558f-461e-a030-196562376c78", // Valid UUID from /api/v2/organizations/settings
proficiency: 80 // Integer 0-100, not a float or string
},
{
skillId: "b1234567-89ab-cdef-0123-456789abcdef",
proficiency: 50
}
];
// Using PureCloudPlatformClientV2 for type safety
const response = await platformClient.UsersApi.updateUserSkills(userId, {
body: payload
});
Ensure your OAuth token includes user:skill:write. If you are still seeing empty 400 responses, check that the skillId values exist in your organization. The API does not return detailed error messages for invalid IDs in this specific endpoint, which is a documented limitation. I usually validate the IDs against GET /api/v2/organizations/settings before sending the put request to avoid this ambiguity.
You need to stop sending raw HTTP requests and use the SDK to handle serialization. The 400 is likely caused by incorrect JSON typing, and the API will silently reject malformed proficiency values if you don’t let the client validate them.