Request Parameters

Request parameters are positional arguments after the URL.

Separator	Type	Example
Header:Value	HTTP header	Content-Type:application/json
Header:	Header removal (empty value)	Accept:
param==value	Query parameter	page==2
field=value	JSON/form field (as string)	name=John
field:=json	JSON field (interpreted)	age:=30 tags:=["a","b"]
@filepath	File upload	@photo.jpg
+key=value	Cookie	+session=abc123

Content type

By default, data fields are serialized as JSON. Use flags to change this:

# JSON (default)
curl-cffi post https://httpbin.org/post name=test count:=5

# Form-encoded
curl-cffi post --form https://httpbin.org/post name=test

# Multipart
curl-cffi post --multipart https://httpbin.org/post name=test @file.txt

Cookies

Use the + separator to set cookies on the request:

# Set a single cookie
curl-cffi get https://httpbin.org/cookies +session=abc123

# Set multiple cookies
curl-cffi get https://httpbin.org/cookies +session=abc123 +theme=dark