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What the QCOS quantum operating system does

QCOS is the SoftQuantus operating system for quantum computers: a vendor-neutral runtime for quantum and hybrid workloads. Use it to submit circuits to a CPU simulator, estimate costs, retrieve evidence and expose quantum capabilities to applications and LLM agents.
What runs today. CPU state-vector simulation (up to 24 qubits per API replica). Real quantum hardware (QPU) and GPU compute are in validation and not yet available: no real QPU job and no GPU job has completed through Softquantus Cloud, and a real-QPU request is refused with 403 real_qpu_disabled. Workspaces are not confidential: there is no confidential compute and no per-workspace encryption key. Evidence bundles are sealed under a SHA-256 Merkle root; they are not signed.

Quantum OS user manual

The complete end-user manual for the quantum operating system — no quantum background assumed.

Quantum computing use cases

QAOA portfolio optimisation, Grover DNA search, Shor RSA assessment and VQE chemistry.

Platform guide

The platform.softquantus.com console: workspaces, roles, API keys, credits and billing.

Which API key do I need?

A single map of every credential across QCOS, the Platform and QuantumLock.

Compute services

One Execution Plane for quantum simulators and CPU compute — prepaid, budgeted, evidence-sealed. Real QPUs and GPU compute are in validation and not yet available.

QCOS & QuantumLock on your compute

Hosted runtime, free local simulation and the licensed on-prem paths. GPU hybrid containers are in validation and not yet available.

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Interfaces for running quantum circuits

QCOS quick start

Run a Bell-state circuit through the API, SDK, CLI or MCP in a few minutes.

REST API

Integrate QCOS from any application using HTTPS, API keys and JSON.

Python SDK

Build applications, notebooks and pipelines with softqcos-sdk.

CLI

Operate QCOS from local terminals, CI/CD and automation scripts.

MCP Server

Let MCP-compatible AI agents call QCOS through typed tools.

QuantumLock

Licensing, key governance and cryptographic evidence for the stack.

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How to run a quantum circuit on QCOS

1

Create a SoftQuantus account

Open platform.softquantus.com, create an organization and generate a scoped API key.
2

Choose an interface

Use REST for applications, the Python SDK for notebooks and services, the CLI for automation, or MCP for LLM agents.
3

Submit jobs safely

Start on simulator_aer and estimate cost. Hardware providers (IBM Quantum, AWS Braket, Azure Quantum, IonQ) are reached only through Softquantus Cloud, which is in validation and not yet available.
4

Track usage and evidence

Review credits, job status, result artifacts, evidence bundles and license validation logs.

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What QCOS sends to quantum backends

Large datasets, images and genomics files stay in the classical data layer. QCOS sends compact quantum workload artifacts to the simulator (and, once hardware is available, to providers): circuits, parameters, Hamiltonians, QUBO/Ising models, observables and shot counts.