Documentation

Print from your backend.

RocketPrint is a JSON REST API plus a small app that runs next to your printers. If you can make an HTTP request, you can print.

Start here

The fastest path is the quickstart: create an API key, install RocketPrint Station on a computer that can already print, and send a label. Everything else here is reference material you can come back to.

QuickstartCreate a key, install the Station app, print a label. Two curl commands, about five minutes.Print something →API referenceEvery endpoint, field, header, and status code on the public /v1 surface.Read the reference →Errors & limitsWhat each failure means, what to do about it, and the rate and size limits.See the catalog →Client librariesThe Node client with a status helper, plus curl for everything else.Get the client →RocketPrint StationWhat runs next to your printers: installing, signing in, finding printers, and fixing problems.Read the guide →Reliability modelJob statuses, offline queueing, safe retries, and the failures we cannot detect.Read the contract →

How it fits together

There are three things: your backend, RocketPrint, and the Station app running next to your printers. Your backend makes one authenticated request naming a printer. We save the job, find the computer that printer is attached to, and send the job down the connection that computer already opened to us. The app prints it and reports back what happened.

You never address a printer by hostname or IP, and nothing connects in to your network. Choosing where something prints is one field in your request — an ordinary decision in your own code.

Base URL and authentication

The public API lives at https://rocketprint.io/api. Authenticate every request with an account API key in the X-API-Key header. You create keys in your account. Each one is shown once, and we only ever store a scrambled version.

Full details are in the API reference, and the security model behind them is on the security page.

Conventions

  • All requests and responses are JSON.
  • IDs are opaque strings. Store them; do not parse them.
  • Timestamps are RFC 3339 in UTC.
  • Send an Idempotency-Key on every job creation. It costs nothing and prevents duplicate prints.
  • Today you ask us for job status. Webhooks are coming.

Print your first label.

One install and two curl commands.

Open the quickstart