The watchlist API requires users to install your app in order to make requests. There is an Install App option in the developers tools under the app details section of your app. More information is available here.
Try the watchlist app on settle: https://settle.finance/app/watchlist
[ { id: 'c1c17594-ca3e-4330-b073-6874bca54dc1',title: 'new watchlist',user_guid: '600c7844-a5c8-4ca1-b24b-5aa3a563cafc' },{ id: 'd1d69926-4c3a-46e7-ba40-96a0157d6688',title: 'John Doe\'s Tokens',user_guid: '600c7844-a5c8-4ca1-b24b-5aa3a563cafc' },{ id: 'a92bd65f-a969-42cc-98be-232a4da12bd4',title: 'My Portfolio',user_guid: '600c7844-a5c8-4ca1-b24b-5aa3a563cafc' },{ id: '5f8e6b68-b34d-4d68-a6bc-bf718af165b3',title: 'Top 20',user_guid: '600c7844-a5c8-4ca1-b24b-5aa3a563cafc' } ]
[ { id: 1, name: 'Bitcoin', symbol: 'BTC' },{ id: 1027, name: 'Ethereum', symbol: 'ETH' },{ id: 52, name: 'XRP', symbol: 'XRP' },{ id: 1765, name: 'EOS', symbol: 'EOS' },{ id: 2, name: 'Litecoin', symbol: 'LTC' },{ id: 1831, name: 'Bitcoin Cash', symbol: 'BCH' },{ id: 825, name: 'Tether', symbol: 'USDT' },{ id: 512, name: 'Stellar', symbol: 'XLM' },{ id: 1958, name: 'TRON', symbol: 'TRX' },{ id: 1839, name: 'Binance Coin', symbol: 'BNB' },{ id: 2010, name: 'Cardano', symbol: 'ADA' },{ id: 3602, name: 'Bitcoin SV', symbol: 'BSV' },{ id: 328, name: 'Monero', symbol: 'XMR' },{ id: 1720, name: 'IOTA', symbol: 'MIOTA' },{ id: 131, name: 'Dash', symbol: 'DASH' },{ id: 1518, name: 'Maker', symbol: 'MKR' },{ id: 1376, name: 'NEO', symbol: 'NEO' },{ id: 1321, name: 'Ethereum Classic', symbol: 'ETC' },{ id: 2566, name: 'Ontology', symbol: 'ONT' },{ id: 873, name: 'NEM', symbol: 'XEM' } ]