null

When a schema specifies a type of null, it has only one acceptable value: null.

It's important to remember that in JSON, null isn't equivalent to something being absent. See Required Properties for an example.

Language-specific info:
Python
Ruby
In Python, null is analogous to None.
schema
1
{ "type": "null" }
data
1
null
compliant to schema
data
1
false
not compliant to schema
data
1
0
not compliant to schema
data
1
""
not compliant to schema
data
1
not compliant to schema