Summary endpoints validate tickers and resolve crypto
/api/symbols/{ticker}/sentiment-summary/and/insider-summary/now return404for a ticker no symbol owns, with a pointer at/api/symbols/?search=to look up the right one. Zeros in a 200 response always mean a quiet window for a real listing, never a misspelled symbol. Response codes are documented in the OpenAPI spec.- Both endpoints accept the same ticker forms as the rest of the API. A bare crypto name resolves to its
<SYM>-USDlisting, so/api/symbols/DOGE/sentiment-summary/returns Dogecoin's rollup and echoesDOGE-USDas the ticker. Delisted and renamed symbols stay addressable, and a symbol a stock or ETF already owns keeps its meaning:BTCis still the Grayscale ETF,BTC-USDthe coin.