Discord vs Facebook

Discord's REST and Gateway APIs let bots and apps manage servers, channels, messages, and slash commands, authenticated with a bot token for server-side integrations or OAuth2 for user-facing flows like account linking. Rate limits are enforced per route and per bucket, and most guild-management scopes only work once the bot has been added to a server with matching OAuth2 permission scopes.

Meta's Graph API is the single HTTP interface behind Facebook Login, Page management, and Social Plugins, exposing versioned endpoints under graph.facebook.com that read and write data about people, Pages, and Groups once a user grants OAuth permissions. Most scopes that touch another person's data or a business Page require Meta's app review process before they work outside development mode, and the same Graph API infrastructure also underlies Instagram's Business API stack.