The Optimate API lets other software work with your account: list your connected accounts, schedule, publish or draft posts, make branded designs, and read your analytics and best posting times. It's included on Pro, Studio and Agency, and during the free trial.
Make a key
- Open Settings → Automations and find API keys.
- Name the key after what will use it, like "Zapier", so you know which one to revoke later.
- Choose Read and post to schedule and publish, or Read only for reports and dashboards.
- Copy the key straight away. It starts with opt_live_ and is shown only once.
The developer guide has the requests, the Zapier and Make steps, and every endpoint.