Troubleshooting

Reviewed by Proof · Updated September 30, 2026

Definition

Troubleshooting is a symptom-to-fix list for the most common problems when calling luv13, based on the responses the API actually returns.

Key takeaways

First check the API is up: curl -s -o /dev/null -w "%{http_code}\n" https://api.luv13.ai/v1/models should print 200.
401 is almost always the key or the header format.
404 is almost always the URL: the base URL must be exactly https://api.luv13.ai/v1, with no trailing slash on paths.
A tool that shows no models or can't connect usually has the wrong base URL.
If a model is unavailable, switch to another id.

Symptom and fix

Symptom	Likely cause	Fix
`401` with `invalid_auth`	Key missing, wrong, or not sent as `Authorization: Bearer <key>`	Re-copy the key from where you stored it; check for a missing `Bearer` or a trailing newline
`404` with an HTML page	Wrong path: missing `/v1`, doubled `/v1/v1`, a trailing slash, or an endpoint luv13 doesn't serve	Use `https://api.luv13.ai/v1` as the base URL; see Endpoints
`405` with an HTML page	`GET` sent to `/v1/chat/completions`	Use `POST`
`522`	luv13's servers unreachable behind Cloudflare	Wait and retry; see Health Checks
Error naming a model as unavailable	That model is out of capacity	Switch ids; see Model Fallback
Requests slow or failing under load	Capacity saturated; requests queue or fail	Retry with backoff; see Retrying Requests
CORS error in the browser console	luv13 rejects cross-origin browser calls	Call luv13 from your server; see Browser Requests
JSON parse error in your code	The error body was HTML (404 or 405)	Check the status code before parsing
Tool feature fails, chat works	The feature uses an endpoint luv13 doesn't serve, such as embeddings	Turn that feature off, or use another service for it

Base URL mistakes

Many tools add /chat/completions to whatever you enter. Enter the base URL, not the full endpoint:

You enter	Tool calls	Result
`https://api.luv13.ai/v1`	`https://api.luv13.ai/v1/chat/completions`	Works
`https://api.luv13.ai`	`https://api.luv13.ai/chat/completions`	404
`https://api.luv13.ai/v1/chat/completions`	`.../v1/chat/completions/chat/completions`	404

Still stuck

Email [email protected] with the time, endpoint, model id, status code and error body. See Contact and Support.