The Open Printer Proxy Agent (OPPA) discovers printers and processes jobs on the local machine. OpenPrinter gives your server a versioned protocol and a small delivery SDK — without owning your queue, database, or business rules.
Application retains the job while OPPA is offline. Receipt is acknowledged only after durable local persistence.
OPPA is the desktop agent with local printer access. OpenPrinter is the protocol and server SDK an integrating application talks to. Restaurant, tenant, routing, and billing concepts stay entirely on your side of the line.
Discovers printers, persists jobs before acknowledgement, renders documents, submits locally, and reports received, submitted, or failed.
Framework-neutral protocol sessions over transports your application owns, with runtime validation, typed callbacks, and no hidden durable queue.
Your application authenticates and routes each connection; the SDK runs the validated protocol session. You stay responsible for transport ownership, job durability, retry policy, and logical printer routing.
See the Node.js integration
const openPrinter = createOpenPrinterServer({
brand: { name: "Acme POS" },
onJobReceived: ({ agent, message }) => {
jobs.markReceived(agent.agentId, message.payload.jobId);
},
});
const session = openPrinter.accept({
identity: authenticatedAgent,
transport: { send, close },
});
socket.on("message", (message) => session.receive(message));
await session.sendJob(job);Local printer access is privileged. OPPA accepts only documented messages and exposes no generic remote execution surface.
Run the example server, authorize a local agent, and exercise the complete delivery path before connecting physical hardware.
pnpm install
pnpm --filter openprinter-node-example dev