Q Ctrl

Q-CTRL builds infrastructure software to power the quantum future, delivering AI-driven quantum control, error-suppression, and performance-management tools that span quantum computing and quantum sensing. Its products — Boulder Opal (hardware design and control), Fire Opal (quantum error suppression), Black Opal (education), and Ironstone Opal (GPS-free quantum navigation) — are consumed primarily through official Python client libraries that authenticate against the Q-CTRL account service and call a hosted cloud GraphQL API at api.q-ctrl.com. Q-CTRL serves enterprise, defense, aerospace, and research customers and is ISO/IEC 27001:2022 certified.

Q Ctrl publishes 1 API on the APIs.io network. Tagged areas include Company, Quantum Computing, Quantum Control, Quantum Sensing, and Error Suppression.

Q Ctrl’s developer surface includes documentation, getting-started guide, signup flow, engineering blog, support, authentication, changelog, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
35.9/100 thin ▬ flat Agent 14/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs
CompanyQuantum ComputingQuantum ControlQuantum SensingError SuppressionDeveloper ToolsSDKGraphQL API

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 35.9/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 10.4 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 6.2 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 14/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/q-ctrl: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Q-CTRL Cloud API

Hosted GraphQL API behind the Q-CTRL Boulder Opal and Fire Opal Python clients. Not published as a public OpenAPI/REST spec; accessed via the official SDKs with an account-issue...

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Q Ctrl Authentication

apiKey · 1 scheme

SECURITY

Q Ctrl Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Q Ctrl Vulnerability Disclosure

contact published

SECURITY

Q Ctrl Trust Center

ISO/IEC 27001:2022, Cyber Essentials, NIST SP 800-171 Rev 3, DISP (Defence Industry Security Program)

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 6

Authentication, authorization, and security posture

Security
Security
 Compliance
Compliance
 Authentication
Authentication
 DomainSecurity
DomainSecurity
 VulnerabilityDisclosure
VulnerabilityDisclosure
 TrustCenter
TrustCenter

Operate 3

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 ChangeLog
ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: q-ctrl
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/q-ctrl.png
name: Q Ctrl
description: Q-CTRL builds infrastructure software to power the quantum future, delivering AI-driven quantum control, error-suppression,
  and performance-management tools that span quantum computing and quantum sensing. Its products — Boulder Opal (hardware
  design and control), Fire Opal (quantum error suppression), Black Opal (education), and Ironstone Opal (GPS-free quantum
  navigation) — are consumed primarily through official Python client libraries that authenticate against the Q-CTRL account
  service and call a hosted cloud GraphQL API at api.q-ctrl.com. Q-CTRL serves enterprise, defense, aerospace, and research
  customers and is ISO/IEC 27001:2022 certified.
url: https://raw.githubusercontent.com/api-evangelist/q-ctrl/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- dcvc
- sierra-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Quantum Computing
- Quantum Control
- Quantum Sensing
- Error Suppression
- Developer Tools
- SDK
- GraphQL API
apis:
- name: Q-CTRL Cloud API
  description: Hosted GraphQL API behind the Q-CTRL Boulder Opal and Fire Opal Python clients. Not published as a public OpenAPI/REST
    spec; accessed via the official SDKs with an account-issued API key.
  humanURL: https://docs.q-ctrl.com/
  baseURL: https://api.q-ctrl.com/graphql
  properties:
  - type: GraphQL
    url: https://api.q-ctrl.com/graphql
  - type: Documentation
    url: https://docs.q-ctrl.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://q-ctrl.com/
- type: DeveloperPortal
  url: https://docs.q-ctrl.com/
- type: Documentation
  url: https://docs.q-ctrl.com/
- type: GettingStarted
  url: https://docs.q-ctrl.com/boulder-opal/get-started
- type: GitHubOrganization
  url: https://github.com/qctrl
- type: SignUp
  url: https://accounts.q-ctrl.com/signup
- type: Blog
  url: https://q-ctrl.com/blog
- type: Support
  url: https://q-ctrl.com/contact
- type: TermsOfService
  url: https://q-ctrl.com/terms
- type: PrivacyPolicy
  url: https://q-ctrl.com/privacy
- type: StatusPage
  url: https://status.q-ctrl.com/
- type: Security
  url: https://q-ctrl.com/security
- type: Compliance
  url: https://q-ctrl.com/security
- type: Packages
  url: packages/q-ctrl-packages.yml
- type: SDKs
  url: packages/q-ctrl-packages.yml
- type: Authentication
  url: authentication/q-ctrl-authentication.yml
- type: Lifecycle
  url: lifecycle/q-ctrl-lifecycle.yml
- type: ChangeLog
  url: changelog/q-ctrl-changelog.yml
- type: LLMsTxt
  url: llms/q-ctrl-llms.txt
- type: DomainSecurity
  url: security/q-ctrl-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/q-ctrl-vulnerability-disclosure.yml
- type: TrustCenter
  url: security/q-ctrl-trust-center.yml
- type: WellKnown
  url: well-known/q-ctrl-well-known.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 9
  pass: local-v1