Graph API
Why it matters for creators
The Graph API is the line between tools that are permitted and tools that are not, which makes it worth knowing about even if you never touch it.
Anything working through the Graph API is doing so with Meta's knowledge, under a reviewed app, with permissions the creator explicitly granted and can revoke from Instagram's own settings at any time. Anything not working through it is automating the app itself — logging in as you and clicking — which violates Meta's terms and puts the account at genuine risk.
The practical test is what happens when you connect. A tool that sends you to Instagram's own login screen, shows you the permissions it wants and returns you to the app is using the official path. A tool that asks you to type your Instagram password into its own form is not, and no amount of reassurance changes that. Whether connecting a third-party app is safe covers what to check.