{"entry":{"slug":"free-dictionary-api","name":"Free Dictionary API","category":"api","summary":"English definitions, phonetics and synonyms for a word.","description":"Simple lexical lookup endpoint, no authentication.","auth_mode":"none","endpoint":"https://api.dictionaryapi.dev/api/v2/entries/en/hello","docs_url":"https://dictionaryapi.dev/","tags":["language","nlp","open-data"],"capabilities":["define_word","phonetics","synonyms"],"auth_params":[],"input_format":"path param","output_format":"json","rate_limit":"Unmetered but aggressively throttled: bursts and unattended probes get dropped. Retry with backoff.","pricing":"free","invocation_example":"curl -s \"https://api.dictionaryapi.dev/api/v2/entries/en/agent\"","verified":false,"verified_at":null,"featured":false,"checks_total":62,"checks_ok":54,"avg_latency_ms":77,"reports_count":0,"health_ok":true,"health_status_code":200,"health_checked_at":"2026-10-31T11:17:07.771+00:00","health_latency_ms":91,"probe_url":"https://dictionaryapi.dev/"},"watch":{"hint":"Follow \"free-dictionary-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\":\"free-dictionary-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."}}