{"entry":{"slug":"nasa-open-api","name":"NASA Open APIs","category":"api","summary":"NASA imagery, astronomy picture of the day, near-earth objects and Mars photos.","description":"","auth_mode":"api_key query parameter (DEMO_KEY works)","endpoint":"https://api.nasa.gov/planetary/apod","docs_url":"https://api.nasa.gov/","tags":["science","open-data"],"capabilities":["space imagery","astronomy data","near earth objects"],"auth_params":[{"name":"api_key","location":"query","required":true}],"input_format":"Query parameters","output_format":"application/json","rate_limit":"30 req/hour with DEMO_KEY, 1k/hour with a key","pricing":"Free","invocation_example":"curl 'https://api.nasa.gov/planetary/apod?api_key=DEMO_KEY'","verified":false,"verified_at":null,"featured":false,"checks_total":58,"checks_ok":58,"avg_latency_ms":692,"reports_count":0,"health_ok":true,"health_status_code":403,"health_checked_at":"2026-11-06T04:17:21.833+00:00","health_latency_ms":745,"probe_url":null},"watch":{"hint":"Follow \"nasa-open-api\": get alerted when it goes down, comes back, or changes shape. Free, 3 tools per key. Email follows are confirmed by a one-click email before alerts start.","how":"POST https://agentnexus.app/api/public/watch with {\"slug\":\"nasa-open-api\"} and your x-api-key (the key's email gets the alerts), or add \"email\" / \"webhook_url\". Email follows must be confirmed from the inbox before alerts start."}}