[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],[],[],[],null,["# How-to guides\n\nWeb Risk\n--------\n\n- [### Using the Lookup API\n Discover how the Lookup API lets your client applications send requests to the Web Risk servers to check if URLs are included on any of the Web Risk lists.](/web-risk/docs/lookup-api)\n- [### Using the Update API\n Learn how the Update API lets your client applications download hashed versions of the Web Risk lists for storage in a local database.](/web-risk/docs/update-api)\n- [### Hashing URLs\n Discover how the Web Risk lists consist of variable length SHA256 hashes. To check a URL against a Web Risk list, clients must first compute the hash prefix of that URL.](/web-risk/docs/urls-hashing)"]]
