Posttar API
Automate your own Posttar account: create and edit content, schedule, publish, run autopilot and read reports, without opening the app.
The Posttar API gives a script, or another system, the same reach the app has over your account. You can create a post from a theme, edit its slides, set media, schedule it, publish it, turn autopilot on, and read how it performed.
It is available on the Plus and Scale plans. Calls spend the credits your plan already includes, with no separate billing.
Base URL
https://api.posttar.com/v1That host serves the API and nothing else: any other path on it answers 404 in the same JSON error shape, never HTML. The same endpoints also answer at https://app.posttar.com/api/v1, which is the internal name of the same route.
What you can do
| Area | What the API covers |
|---|---|
| Posts | Create in any of the six formats, read, edit, set media, archive, delete |
| Slides | Read, add, edit, reorder, remove, swap layout, reimagine the image |
| Scheduling | Schedule, unschedule, publish now |
| Reel media | List and pick the background clip and the music track |
| Autopilot | Turn on and off, manage slots and their directives |
| Projects | List, create, rename |
| Brand DNA | Read, list and apply palettes, change the brand photo and logo |
| Radar | Read the latest analysis and the saved inspirations |
| Reports | Period summary and per-post performance |
| Team | List who is in the workspace |
Connecting Instagram, paying, and changing plan do not cross into the API: all three are OAuth or checkout flows that need a browser. See the excluded list in the OpenAPI document for everything that stays out and why.
Built for agents
Every page here answers in plain Markdown at the same URL with .md at the end, so an agent can fetch it without parsing HTML. There is also /llms.txt for the index and /docs/api/llms-full.txt for this entire documentation in one file.
The machine contract is the OpenAPI document, generated from the same registry that serves the requests, so it cannot drift from what the API actually does.