The rate limit of the API is primarily considered on a per-IP basis. We allow 10 requests per second per IP address. When an application exceeds the rate limit for our API, we r...

If the Upwork server fails while processing a GraphQL request, the system sends an error array response to the client. Errors in GraphQL are handled differently from ReST. While...

We don't currently provide a test environment for Upwork API. For testing API calls, we suggest using mocking technology, i.e., stub the requests to Upwork API, test the tool, a...

For your convenience, all of our API resources are documented here. They are categorized and named based on their functionality. Note that freelancer profiles and jobs search re...

We take security — yours and ours — seriously. To make API requests, you need to authenticate to the Upwork API. Currently, we support OAuth 2.0 authentication. All API requests...

To keep Upwork secure and meet specific developer needs, we maintain different scope and permissions levels in the Upwork API. Permissions define what a user can do in the conte...

We understand that having an active API key can be important for your work, and are sorry to hear that yours has been disabled. The most common reasons that an API key is disabl...