> ## Documentation Index
> Fetch the complete documentation index at: https://docs.neuro-tech.io/llms.txt
> Use this file to discover all available pages before exploring further.

# FAQ and troubleshooting

> Common questions and fixes for Agent API integrations

## Why does Create or Login return a signature error?

Double-check the string you sign, the host value (domain only), and the HMAC
key. Reusing a nonce will also cause failures.

## How long are JWTs valid?

JWTs are short-lived. Use `Account/Refresh` before expiry or log in again.

## Why is my account still disabled after Create?

New accounts are disabled until the email address is verified with
`Account/VerifyEMail`.

## What happens if Refresh fails?

If the JWT is expired or invalid, you must log in again with
`Account/Login`.

## Does Recover reveal if an account exists?

No. `Account/Recover` intentionally returns no success signal to avoid
information leakage. A 422 error is the only explicit case, when multiple
accounts match and no `userName` is supplied.

## Are there rate limits?

Yes. Account recovery and login endpoints are audited and may be rate-limited.
Contact your Neuron operator if you are blocked.