Commonwealth Fusion Systems

Commonwealth Fusion Systems (CFS) is a commercial fusion energy company headquartered in Devens, Massachusetts and spun out of the MIT Plasma Science and Fusion Center in 2018. CFS is developing tokamak-based fusion systems built around high-temperature superconducting (HTS) REBCO magnet technology that enables substantially smaller, faster, and lower-cost fusion machines than prior generations. The company's technology pipeline starts with SPARC, a net-energy demonstration tokamak under construction at the Devens campus, and continues with ARC, the planned first commercial fusion power plant, sited in Chesterfield County, Virginia in partnership with Dominion Energy and targeted to deliver approximately 400 MW of electricity to the grid in the early 2030s. CFS is backed by a deep investor base including Breakthrough Energy Ventures, Eni, Equinor, Google, Temasek, Tiger Global, Khosla Ventures, Bill Gates, Soros Fund Management, Lowercase Capital, John Doerr, and TIME Ventures. CFS does not publish a public developer API or SDK; engagement is via partnerships, careers, and investor channels.

Commonwealth Fusion Systems is profiled on the APIs.io network. Tagged areas include Fusion Energy, Tokamak, SPARC, ARC, and HTS Magnets.

Commonwealth Fusion Systems’ developer surface includes product news, engineering blog, YouTube channel, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

9.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

Fusion EnergyTokamakSPARCARCHTS MagnetsHigh-Temperature SuperconductorsREBCOClean EnergyMITDevensChesterfield CountyDominion Energy

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 9.3/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.4 / 20

Commercial Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 0 / 4

Consent & Bot Identity 0 / 3

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Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Learn 1

Tutorials, courses, talks, and written guidance

YouTube

YouTube

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 10

The organization behind the API

Website

About

News

Blog

Careers

PressEmail

InvestorEmail

LinkedIn

Twitter

Twitter

Instagram

Instagram

Scroll for all 10

Other 5

Properties that don't map to a standard resource type

Technology

SPARC

ARC

Magnets

Email

Source (apis.yml)

aid: commonwealth-fusion-systems
name: Commonwealth Fusion Systems
description: Commonwealth Fusion Systems (CFS) is a commercial fusion energy company headquartered in Devens, Massachusetts
  and spun out of the MIT Plasma Science and Fusion Center in 2018. CFS is developing tokamak-based fusion systems built around
  high-temperature superconducting (HTS) REBCO magnet technology that enables substantially smaller, faster, and lower-cost
  fusion machines than prior generations. The company's technology pipeline starts with SPARC, a net-energy demonstration
  tokamak under construction at the Devens campus, and continues with ARC, the planned first commercial fusion power plant,
  sited in Chesterfield County, Virginia in partnership with Dominion Energy and targeted to deliver approximately 400 MW
  of electricity to the grid in the early 2030s. CFS is backed by a deep investor base including Breakthrough Energy Ventures,
  Eni, Equinor, Google, Temasek, Tiger Global, Khosla Ventures, Bill Gates, Soros Fund Management, Lowercase Capital, John
  Doerr, and TIME Ventures. CFS does not publish a public developer API or SDK; engagement is via partnerships, careers, and
  investor channels.
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/commonwealth-fusion-systems.png
tags:
- Fusion Energy
- Tokamak
- SPARC
- ARC
- HTS Magnets
- High-Temperature Superconductors
- REBCO
- Clean Energy
- MIT
- Devens
- Chesterfield County
- Dominion Energy
url: https://raw.githubusercontent.com/api-evangelist/commonwealth-fusion-systems/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.20'
apis: []
common:
- type: DomainSecurity
  url: security/commonwealth-fusion-systems-domain-security.yml
- type: Website
  url: https://cfs.energy
- type: Technology
  url: https://cfs.energy/technology
- type: SPARC
  url: https://cfs.energy/technology/sparc
- type: ARC
  url: https://cfs.energy/technology/arc
- type: Magnets
  url: https://cfs.energy/technology/magnets
- type: About
  url: https://cfs.energy/about-us
- type: News
  url: https://cfs.energy/news-and-media/
- type: Blog
  url: https://blog.cfs.energy
- type: Careers
  url: https://jobs.lever.co/cfsenergy
- type: Contact
  url: https://cfs.energy/contact
- type: PrivacyPolicy
  url: https://cfs.energy/privacy-policy/
- type: Email
  url: mailto:info@cfs.energy
- type: PressEmail
  url: mailto:press@cfs.energy
- type: InvestorEmail
  url: mailto:investment@cfs.energy
- type: LinkedIn
  url: https://www.linkedin.com/company/commonwealth-fusion-systems
- type: Twitter
  url: https://twitter.com/CFS_energy
- type: YouTube
  url: https://www.youtube.com/@CommonwealthFusionSystems
- type: Instagram
  url: https://www.instagram.com/cfs.energy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com