# Rigetti & Co — Quantum Cloud Services (QCS)

> Rigetti Computing builds superconducting quantum processors and delivers access to them over Quantum Cloud Services (QCS). The QCS HTTP API is a REST/RPC interface (Google AIP-aligned) for discovering quantum processors and their instruction set architectures, reserving execution time, creating execution engagements/endpoints, and managing accounts and billing. Program build/execution is done with the pyQuil / qcs-sdk Python and Rust SDKs; low-latency job execution and translation run over a companion gRPC surface. Generated by the API Evangelist enrichment pipeline from the provider's published OpenAPI, gRPC protos, packages, and docs.

## APIs
- [Rigetti QCS API (OpenAPI 3.0.2)](https://api.qcs.rigetti.com): 52 operations across quantum processors, endpoints, engagements, reservations, client applications, authentication, and account/billing. Auth: OAuth2 (Okta) bearer JWT.

## Specs
- [OpenAPI](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/openapi/rigetti-and-co-qcs-openapi.yml)
- [gRPC — Controller service](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/grpc/rigetti-and-co-controller-service.proto)
- [gRPC — Translation service](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/grpc/rigetti-and-co-translation-service.proto)

## Docs
- [QCS Documentation](https://docs.rigetti.com/qcs/)
- [API Reference](https://docs.rigetti.com/qcs/api-reference)
- [Getting Started](https://docs.rigetti.com/qcs/getting-started)
- [Changelog](https://docs.rigetti.com/qcs/changelog)
- [Request access (get quantum)](https://www.rigetti.com/get-quantum)

## SDKs
- [pyquil (PyPI)](https://pypi.org/project/pyquil/)
- [qcs-sdk-python (PyPI)](https://pypi.org/project/qcs-sdk-python/)
- [qcs-api-client (PyPI)](https://pypi.org/project/qcs-api-client/)
- [GitHub org](https://github.com/rigetti)

## Enrichment artifacts
- [Authentication](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/authentication/rigetti-and-co-authentication.yml)
- [Conventions](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/conventions/rigetti-and-co-conventions.yml)
- [Error catalog](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/errors/rigetti-and-co-problem-types.yml)
- [Data model](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/data-model/rigetti-and-co-data-model.yml)
- [Lifecycle](https://raw.githubusercontent.com/api-evangelist/rigetti-and-co/refs/heads/main/lifecycle/rigetti-and-co-lifecycle.yml)