Slack Files API

Slack's Files API lets apps programmatically upload, share, and manage files in Slack. Apps can upload binaries (images, docs, code snippets) or register links to external files, then attach them to channels, DMs, or threads with optional captions. The API supports retrieving file metadata and content, listing and filtering files, generating or revoking public share links, and deleting files, with access controlled by app scopes and channel membership.