Response Codes

Apprise API uses standard HTTP status codes. Many error responses return a short message as text/plain. If you request JSON (send Accept: application/json), error responses include an error field.

Code	Meaning	Where you will see it
200	OK	Request succeeded.
204	No Content	No configuration exists for the requested key, or a stateless notify request had no valid URLs to notify.
400	Bad Request	Invalid payload, unsupported type or format, invalid tag definition, or invalid recursion header.
403	Forbidden	The server is configured to deny the request (for example, APPRISE_CONFIG_LOCK=yes, or /cfg listing is disabled).
405	Method Not Allowed	The request used an unsupported HTTP method for the endpoint.
406	Not Acceptable	The recursion limit has been reached, or the request was rejected by a server rule.
417	Expectation Failed	Health check detected a blocking condition (for example, missing write permissions).
421	Misdirected Request	API-only mode is enabled and a web UI page was requested.
424	Failed Dependency	At least one notification failed to send.
431	Request Header Fields Too Large	The request exceeded the configured in-memory upload limit and Django rejected it.
500	Internal Server Error	Server-side error saving or loading configuration, or an unexpected I/O error.

Note

Some error cases are endpoint-specific and may return either text/plain or JSON depending on Accept.