What is API (Application Programming Interface)?

Also known as: Application Programming Interface

Definition

A set of rules that lets different software applications talk to each other — for example, to pull data from Instagram or publish a post from an external tool.

In-depth explanation

For social media management tools like Senly, each platform's API (Instagram Graph API, LinkedIn API, TikTok API) is how publishing, analytics and messaging get automated. Without API access, everything would have to be manual — no scheduling, no reporting, no unified inbox.

For agencies, API access is usually indirect, through the software. But it's worth knowing that platforms can restrict their API access (as Twitter/X did in 2023). A platform with official API access to every relevant social network is safer than one that relies on scraping.

Example from agency practice

An agency publishes on Instagram for 20 clients. Behind the scenes the tool uses Instagram's Graph API — a scheduled post is published at the right time via an API call. No one has to press a button.

Especially relevant for

  • Developers
  • Agency owners
Senly

One platform for your entire agency workflow.

Client portal, content planning, AI captions, white-label reporting — all in one tool. Try it free for 14 days.