What Is HTTP 415 Unsupported Media Type?
HTTP 415 Unsupported Media Type explained, and what it means when you see it in CI/CD and deployments.
HTTP 415 means the server refuses the request because of its media type.
What it means
A 415 happens when the Content-Type header does not match what the endpoint expects, e.g. sending form data to a JSON-only API.
When you see it in CI/CD
CI API tests hit 415 when a script omits Content-Type: application/json on a JSON POST. Set the correct header.
Key takeaways
- 415 means a bad Content-Type.
- Set the header the API expects.
- Common on JSON POSTs missing the header.