Type: Package Package: yfscreen Title: Yahoo Finance 'screener' API Version: 0.1.3 Authors@R: person("Jason", "Foster", , "jason.j.foster@gmail.com", role = c("aut", "cre")) Description: Simple and efficient access to Yahoo Finance's 'screener' API for querying and retrieving financial data. The 'yfscreen' package abstracts the complexities of interacting with Yahoo Finance APIs, such as session management, crumb and cookie handling, query construction, pagination, and JSON payload generation. This abstraction allows users to focus on filtering and retrieving data rather than managing API details. Use cases include screening across a range of security types such as equities, mutual funds, ETFs, indices, and futures. The package supports advanced query capabilities, including logical operators, nested filters, and customizable payloads. It automatically handles pagination for efficient retrieval of large datasets by fetching results in batches of up to 250 entries per request. Filters are defined as lists of conditions to accommodate a wide range of screens. The implementation uses standard HTTP libraries to handle API interactions efficiently and supports both R and 'Python' to make it accessible for a broad audience. License: GPL (>= 2) URL: https://github.com/jasonjfoster/screen BugReports: https://github.com/jasonjfoster/screen/issues Depends: R (>= 3.5.0) Imports: curl, jsonlite Suggests: covr, testthat Config/roxygen2/old_usage: TRUE Config/roxygen2/version: 8.0.0 Encoding: UTF-8 LazyData: true Config/pak/sysreqs: libssl-dev Repository: https://jasonjfoster.r-universe.dev Date/Publication: 2026-09-05 23:25:02 UTC RemoteUrl: https://github.com/jasonjfoster/screen RemoteRef: HEAD RemoteSha: d6c937181834195a9dc46fd25a236e3672185f4f RemoteSubdir: r NeedsCompilation: no Packaged: 2026-10-06 08:03:44 UTC; root Author: Jason Foster [aut, cre] Maintainer: Jason Foster