HTTP 507 Insufficient Storage
Updated Free mock REST & WebSocket APIs
HTTP 507 Insufficient Storage — The server can't store what's needed to complete the request (disk or quota full).
- Class
- 5xx Server Error
- Defined in
- RFC 4918 (WebDAV)
- Official
- Yes (IANA registry)
- Cacheable by default
- No (unless Cache-Control/Expires say so)
- Safe to retry
- Sometimes — idempotent requests only
Try it: get a real 507 response
Our test endpoint answers every request with 507 Insufficient Storage.
curl -i https://mockfox.dev/api/status/507Use it in tests, health-check monitors or to see how your client handles a 507. Add ?delay=2000 to slow it down.
What does HTTP 507 mean?
A WebDAV status for uploads that exceed available storage or the user's quota — Nextcloud and ownCloud return it when a user's quota is full. Free up space or raise the quota; the condition is assumed to be temporary.
How to fix 507
- Visitors: This is a server-side problem — wait a moment and retry, or check the site's status page.
- Developers: Check application and proxy logs at the time of the error, verify upstream services are healthy, and alert on 5xx rates.
Example 507 response
HTTP/1.1 507 Insufficient Storage
Content-Type: application/json
{"status":507,"error":"Insufficient Storage"}5xx Server Error: The server failed to fulfill a valid request — usually temporary, or a server-side bug. See the full list of HTTP status codes.
Related status codes
- 413 Content Too LargeThe request body is larger than the server is willing to accept.
- 500 Internal Server ErrorThe server hit an unexpected condition that prevented it from fulfilling the request.
- 503 Service UnavailableThe server is temporarily unable to handle the request (overload or maintenance).
Related tools
Frequently asked questions
What does HTTP 507 Insufficient Storage mean?
The server can't store what's needed to complete the request (disk or quota full).
Is 507 a client or a server error?
507 is a 5xx code: the server failed to handle a request that may be perfectly valid. It's often temporary.
Where is 507 defined?
In RFC 4918 (WebDAV). It's listed in the IANA HTTP Status Code Registry.
How can I test how my app handles a 507?
Call https://mockfox.dev/api/status/507 — it responds with 507 to any method, with CORS enabled. Add ?delay=2000 to simulate a slow response.