[{"category":"1xx","code":100,"description":"The initial part of the request was received; the client should continue sending the rest, or ignore this if the request is already finished.","name":"Continue"},{"category":"1xx","code":101,"description":"The server agrees to switch protocols, as requested by the client's Upgrade header (commonly used to open a WebSocket connection).","name":"Switching Protocols"},{"category":"1xx","code":102,"description":"WebDAV: the server has accepted the request but processing will take a while; prevents the client from timing out.","name":"Processing"},{"category":"1xx","code":103,"description":"Lets the server send preload/preconnect hints for resources before the final response headers are ready.","name":"Early Hints"},{"category":"2xx","code":200,"description":"The request succeeded; the response body contains the requested resource or result.","name":"OK"},{"category":"2xx","code":201,"description":"The request succeeded and a new resource was created as a result, usually returned from a POST.","name":"Created"},{"category":"2xx","code":202,"description":"The request was accepted for processing, but that processing isn't complete yet (async/queued work).","name":"Accepted"},{"category":"2xx","code":203,"description":"The request succeeded, but the returned metadata is from a copy or transforming proxy, not the origin server.","name":"Non-Authoritative Information"},{"category":"2xx","code":204,"description":"The request succeeded but there's no content to return \u2014 common for successful DELETE or PUT requests.","name":"No Content"},{"category":"2xx","code":205,"description":"The request succeeded; the client should reset the document view that sent the request (e.g. clear a form).","name":"Reset Content"},{"category":"2xx","code":206,"description":"Returns only part of a resource, as requested via a Range header \u2014 used for resumable downloads and video streaming.","name":"Partial Content"},{"category":"2xx","code":207,"description":"WebDAV: the body is an XML document that can describe multiple independent status codes for sub-operations.","name":"Multi-Status"},{"category":"2xx","code":208,"description":"WebDAV: avoids repeatedly listing the members of a binding that were already reported in a previous DAV response.","name":"Already Reported"},{"category":"2xx","code":226,"description":"The server fulfilled the request using one or more instance-manipulations applied to the current instance.","name":"IM Used"},{"category":"3xx","code":300,"description":"There are multiple possible responses for the request; the client or user should pick one (rarely used in practice).","name":"Multiple Choices"},{"category":"3xx","code":301,"description":"The resource has permanently moved to a new URL; clients and search engines should update their links.","name":"Moved Permanently"},{"category":"3xx","code":302,"description":"The resource temporarily lives at a different URL; the original URL should still be used for future requests.","name":"Found"},{"category":"3xx","code":303,"description":"Redirects the client to a different resource using GET, regardless of the original request's method \u2014 common after a POST.","name":"See Other"},{"category":"3xx","code":304,"description":"The cached version the client already has is still valid, so the body isn't resent \u2014 saves bandwidth via conditional requests.","name":"Not Modified"},{"category":"3xx","code":305,"description":"Deprecated: the requested resource must be accessed through the proxy in the response's Location header.","name":"Use Proxy"},{"category":"3xx","code":306,"description":"Reserved but no longer used; defined in an earlier HTTP spec version.","name":"(Unused)"},{"category":"3xx","code":307,"description":"Like 302, but guarantees the method and body of the original request are repeated on the new URL.","name":"Temporary Redirect"},{"category":"3xx","code":308,"description":"Like 301, but guarantees the method and body of the original request are repeated on the new URL.","name":"Permanent Redirect"},{"category":"4xx","code":400,"description":"The server can't process the request due to a client error \u2014 malformed syntax, invalid request message framing, etc.","name":"Bad Request"},{"category":"4xx","code":401,"description":"Authentication is required and either missing or invalid; despite the name, this is really about identity, not permission.","name":"Unauthorized"},{"category":"4xx","code":402,"description":"Reserved for future use; occasionally repurposed by APIs for billing/paywall scenarios.","name":"Payment Required"},{"category":"4xx","code":403,"description":"The server understood the request and refuses to authorize it \u2014 the client's identity is known but not permitted.","name":"Forbidden"},{"category":"4xx","code":404,"description":"The server can't find the requested resource; the most well-known status code on the web.","name":"Not Found"},{"category":"4xx","code":405,"description":"The request method (e.g. DELETE) isn't supported for this particular resource.","name":"Method Not Allowed"},{"category":"4xx","code":406,"description":"The server can't produce a response matching the Accept headers sent by the client.","name":"Not Acceptable"},{"category":"4xx","code":407,"description":"Like 401, but authentication must happen with a proxy sitting in front of the server.","name":"Proxy Authentication Required"},{"category":"4xx","code":408,"description":"The server timed out waiting for the request; the client took too long to send it.","name":"Request Timeout"},{"category":"4xx","code":409,"description":"The request conflicts with the current state of the resource on the server (e.g. an edit conflict).","name":"Conflict"},{"category":"4xx","code":410,"description":"The resource is permanently gone with no forwarding address \u2014 stronger than 404, signals it won't come back.","name":"Gone"},{"category":"4xx","code":411,"description":"The server requires a Content-Length header that the request didn't include.","name":"Length Required"},{"category":"4xx","code":412,"description":"A condition in the request's headers (e.g. If-Match) wasn't met by the server.","name":"Precondition Failed"},{"category":"4xx","code":413,"description":"The request body is larger than the server is willing or able to process.","name":"Payload Too Large"},{"category":"4xx","code":414,"description":"The requested URI is longer than the server is willing to interpret.","name":"URI Too Long"},{"category":"4xx","code":415,"description":"The request body's format isn't supported by the server for this endpoint.","name":"Unsupported Media Type"},{"category":"4xx","code":416,"description":"The Range header's value can't be fulfilled \u2014 usually the requested byte range is outside the resource's size.","name":"Range Not Satisfiable"},{"category":"4xx","code":417,"description":"The server can't meet the requirements of the Expect request header.","name":"Expectation Failed"},{"category":"4xx","code":418,"description":"An April Fools' joke from RFC 2324 (Hyper Text Coffee Pot Control Protocol): a teapot refuses to brew coffee. Still formally reserved in RFC 9110 and used by some APIs/tools as an Easter egg.","name":"I'm a teapot"},{"category":"4xx","code":421,"description":"The request was routed to a server that can't produce a response for the combination of scheme and authority in the URI.","name":"Misdirected Request"},{"category":"4xx","code":422,"description":"The request is well-formed but semantically invalid \u2014 common for validation errors on otherwise-valid JSON.","name":"Unprocessable Entity"},{"category":"4xx","code":423,"description":"WebDAV: the resource being accessed is locked.","name":"Locked"},{"category":"4xx","code":424,"description":"WebDAV: the request failed because it depended on another request that failed.","name":"Failed Dependency"},{"category":"4xx","code":425,"description":"The server is unwilling to risk processing a request that might be replayed (used with TLS 0-RTT early data).","name":"Too Early"},{"category":"4xx","code":426,"description":"The server refuses to continue on the current protocol and wants the client to switch, per the Upgrade header.","name":"Upgrade Required"},{"category":"4xx","code":428,"description":"The server requires the request to be conditional (e.g. include If-Match) to avoid the lost-update problem.","name":"Precondition Required"},{"category":"4xx","code":429,"description":"The client has sent too many requests in a given time window \u2014 the standard status code for rate limiting.","name":"Too Many Requests"},{"category":"4xx","code":431,"description":"The request's header fields are too large for the server to process.","name":"Request Header Fields Too Large"},{"category":"4xx","code":451,"description":"The resource is withheld due to a legal demand, such as a government-mandated content block. Named after Fahrenheit 451.","name":"Unavailable For Legal Reasons"},{"category":"5xx","code":500,"description":"A generic catch-all for an unexpected condition on the server that prevented it from fulfilling the request.","name":"Internal Server Error"},{"category":"5xx","code":501,"description":"The server doesn't support the functionality required to fulfill the request (e.g. an unrecognized method).","name":"Not Implemented"},{"category":"5xx","code":502,"description":"A server acting as a gateway or proxy got an invalid response from the upstream server it was contacting.","name":"Bad Gateway"},{"category":"5xx","code":503,"description":"The server is temporarily unable to handle the request \u2014 overloaded or down for maintenance; often paired with a Retry-After header.","name":"Service Unavailable"},{"category":"5xx","code":504,"description":"A gateway or proxy didn't get a timely response from the upstream server it needed to complete the request.","name":"Gateway Timeout"},{"category":"5xx","code":505,"description":"The server doesn't support the HTTP protocol version used in the request.","name":"HTTP Version Not Supported"},{"category":"5xx","code":506,"description":"The server has an internal content-negotiation configuration error.","name":"Variant Also Negotiates"},{"category":"5xx","code":507,"description":"WebDAV: the server can't store the representation needed to complete the request.","name":"Insufficient Storage"},{"category":"5xx","code":508,"description":"WebDAV: the server detected an infinite loop while processing a request with sub-requests.","name":"Loop Detected"},{"category":"5xx","code":510,"description":"Further extensions to the request are required for the server to fulfill it.","name":"Not Extended"},{"category":"5xx","code":511,"description":"The client needs to authenticate to gain network access \u2014 common on captive portals (hotel/airport Wi-Fi).","name":"Network Authentication Required"}]