The initial part of the request has been received and the client should continue sending the rest of the request body.
Quick facts
When does it occur
The initial part of the request has been received and the client should continue sending the rest of the request body.
It belongs to the 1xx Informational class of responses, defined in RFC7231#6.2.1.
Browse all codes in this class: 1xx Informational
Frequently asked questions
100 belongs to the 1xx Informational class and is usually cacheable per headers such as Cache-Control (e.g. 200, 301, 304).
1xx Informational: The initial part of the request has been received and the client should continue sending the rest of the request body.
Sources & standards
Updated 2026-08-18
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