Hey Sydney L..
Checked and the Perplexity API status page is showing all green right now, so the issue is likely on the config side. Most common culprit: expired API credits or a stale API key. I'd check Perplexity Settings → API tab first.
Also worth confirming the model in your Lindy agent is set to one of the current options (Sonar, Sonar Pro, Sonar Reasoning). Lindy updated their Perplexity integration recently and older model names will throw errors.
If the problem persists send me a link to your agent and will be happy to help.