Authentication

Most MultiPost API endpoints require a Bearer token in the Authorization header. The few endpoints that do not require auth are marked explicitly on their pages.

Getting an API key#

Create a new key from MultiPost Dashboard › Settings › API Keys. The full key is shown only once at creation, so copy and store it securely.

How to use the token#

Add the following header to every request:

Authorization: Bearer YOUR_API_KEY

curl#

curl -X GET 'https://api.multipost.app/extension/clients' \
  -H "Authorization: Bearer YOUR_API_KEY"

fetch#

await fetch('https://api.multipost.app/extension/clients', {
  headers: { Authorization: `Bearer ${process.env.MULTIPOST_API_KEY}` },
});

Security tips#

• Never embed an API key in client-side code or commit it to a public repo.
• Prefer environment variables and a server-side proxy for browser-facing flows.
• If a key leaks, disable it from the dashboard and rotate immediately.