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Response

HTTP Set-Cookie Header

Sends cookies from the server to the client. The client stores them and sends them back with subsequent requests via the Cookie header.

Purpose

Enables session management, personalization, and tracking by setting cookies that the browser will include in future requests.

Set-Cookie: <name>=<value> Set-Cookie: <name>=<value>; Expires=<date>; Path=/; Domain=.example.com; Secure; HttpOnly; SameSite=Lax

Code Examples

See how to use the Set-Cookie header in different tools and languages.

curl -I -X POST https://api.example.com/login -d 'user=test&pass=123'
# Set-Cookie: sessionId=abc123; Path=/; HttpOnly; SameSite=Lax
# Subsequent requests with cookie:
curl --cookie "sessionId=abc123" https://api.example.com/profile

Related Headers

Cookie

Sends stored HTTP cookies from the client to the server. Contains name-value pairs that maintain session state across requests.

Authorization

Contains credentials to authenticate the client with the server. Commonly used for Bearer tokens, Basic auth, and API keys.

Cache-Control

Specifies caching directives for both requests and responses. Controls how and for how long content is cached by browsers and intermediate caches.

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HTTP Headers Reference

Complete reference of all HTTP request and response headers

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