Introduction

These docs cover everything you can automate in OnlySocial. Every example uses app.onlysocial.io, the address you sign in to.

Quickstart

Create an API key and make your first request in a few minutes.

Workspace API keys, headers and permissions, and the older personal access tokens.

Contacts, conversations, messages, broadcasts and automations.

Social accounts, posts, scheduling and media.

Bio pages, short links, QR codes and custom domains.

Get notified when posts publish, contacts are created or messages arrive.

Let Claude, ChatGPT, Cursor and other AI assistants work in your workspace.

Provision your own customers, sign them in with SSO and connect their channels.

	Messaging API	Publishing API	Link in Bio API
Covers	Contacts, tags, segments, conversations, messages, broadcasts, automations, media	Social accounts, posts, scheduling, approval, tags, media	Bio pages and blocks, short links, QR codes, pixels, form submissions, analytics, custom domains
Base URL	`https://app.onlysocial.io/api/v1`	`https://app.onlysocial.io/os/api/{workspace-uuid}`	`https://app.onlysocial.io/api/v1/biolinks`
Workspace	Chosen by the API key	In the URL, and must match the API key	Chosen by the API key

One workspace API key can call every API, as long as you give it the permissions for each when you create it.

Some features depend on your plan. If an endpoint returns 404 even with a valid key, the feature is not included in your workspace’s plan.

Integrated before October 2026? Your personal access token still works on the Publishing API at the same addresses. See Older credentials.