Content parser guide: parse and validate Content-Type header
Content-Type parsing errors break API and webhook integrations. Learn how to validate media type, charset, and boundary parameters so servers parse requests correctly.
Common causes
- Wrong media type, for example text/plain instead of application/json.
- Missing charset or malformed parameters in the header.
- Multipart requests without a valid boundary value.
How to fix
- Parse the header and verify type/subtype plus parameters.
- Match Content-Type to the actual request body format.
- Reject unsupported types early and return clear 415 responses.
Use our tool
Open Content-Type ParserRelated