X-energy

X-energy is an advanced nuclear reactor and fuel company headquartered in Rockville, Maryland, founded in 2009 by Dr. Kam Ghaffarian. The company's flagship product is the Xe-100, an 80 MWe (320 MWe four-pack) high-temperature gas-cooled small modular reactor (SMR) using helium coolant and TRISO-X pebble fuel, designed to deliver both electricity and high-temperature process steam to industrial customers. X-energy's fuel subsidiary, TRISO-X, is building a commercial TRISO fuel fabrication facility in Oak Ridge, Tennessee. Project pipeline includes a four-unit Xe-100 plant for Dow Chemical at Seadrift, Texas (NRC environmental assessment completed May 2026, the first US advanced reactor environmental review to be completed), a 12-unit Xe-100 deployment with Energy Northwest at the Tri-Cities, Washington site, a collaboration with Amazon Web Services for data-center power, a feasibility study with LG&E and KU in Kentucky, work with Ontario Power Generation in Canada, and selection under the US Department of Energy's Advanced Reactor Demonstration Program (ARDP). X-energy is led by CEO J. Clay Sell and Chairman/founder Dr. Kam Ghaffarian. Investors include Amazon (Climate Pledge Fund), Ares Management, Citadel, Segra Capital Management, Jane Street, Ken Griffin, the University of Michigan, and others. X-energy completed an upsized IPO on Nasdaq in April 2026. The company does not publish a public developer API or SDK.

X-energy is profiled on the APIs.io network. Tagged areas include Nuclear Energy, Small Modular Reactor, SMR, High-Temperature Gas Reactor, and HTGR.

X-energy’s developer surface includes product news, engineering blog, YouTube channel, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

3.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

0 APIs

Nuclear EnergySmall Modular ReactorSMRHigh-Temperature Gas ReactorHTGRXe-100TRISO FuelTRISO-XAdvanced ReactorClean EnergyProcess HeatIndustrial Decarbonization

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 3.8/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 1.2 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/x-energy: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

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

Company 9

The organization behind the API

Website

Careers

News

Blog

InvestorRelations

InvestorRelations

LinkedIn

Twitter

Twitter

Facebook

Facebook

Instagram

Instagram

Scroll for all 9

Other 5

Properties that don't map to a standard resource type

Xe100

TRISOXFuel

Mission

Leadership

TikTok

Source (apis.yml)

aid: x-energy
name: X-energy
description: X-energy is an advanced nuclear reactor and fuel company headquartered in Rockville, Maryland, founded in 2009
  by Dr. Kam Ghaffarian. The company's flagship product is the Xe-100, an 80 MWe (320 MWe four-pack) high-temperature gas-cooled
  small modular reactor (SMR) using helium coolant and TRISO-X pebble fuel, designed to deliver both electricity and high-temperature
  process steam to industrial customers. X-energy's fuel subsidiary, TRISO-X, is building a commercial TRISO fuel fabrication
  facility in Oak Ridge, Tennessee. Project pipeline includes a four-unit Xe-100 plant for Dow Chemical at Seadrift, Texas
  (NRC environmental assessment completed May 2026, the first US advanced reactor environmental review to be completed), a
  12-unit Xe-100 deployment with Energy Northwest at the Tri-Cities, Washington site, a collaboration with Amazon Web Services
  for data-center power, a feasibility study with LG&E and KU in Kentucky, work with Ontario Power Generation in Canada, and
  selection under the US Department of Energy's Advanced Reactor Demonstration Program (ARDP). X-energy is led by CEO J. Clay
  Sell and Chairman/founder Dr. Kam Ghaffarian. Investors include Amazon (Climate Pledge Fund), Ares Management, Citadel,
  Segra Capital Management, Jane Street, Ken Griffin, the University of Michigan, and others. X-energy completed an upsized
  IPO on Nasdaq in April 2026. The company does not publish a public developer API or SDK.
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/x-energy.png
tags:
- Nuclear Energy
- Small Modular Reactor
- SMR
- High-Temperature Gas Reactor
- HTGR
- Xe-100
- TRISO Fuel
- TRISO-X
- Advanced Reactor
- Clean Energy
- Process Heat
- Industrial Decarbonization
url: https://raw.githubusercontent.com/api-evangelist/x-energy/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/x-energy-domain-security.yml
- type: Website
  url: https://x-energy.com
- type: Xe100
  url: https://x-energy.com/xe-100/
- type: TRISOXFuel
  url: https://x-energy.com/triso-x-fuel/
- type: Mission
  url: https://x-energy.com/our-mission/
- type: Leadership
  url: https://x-energy.com/leadership/
- type: Careers
  url: https://x-energy.com/careers/
- type: News
  url: https://x-energy.com/news/
- type: Blog
  url: https://x-energy.com/blog/
- type: Contact
  url: https://x-energy.com/contact/
- type: InvestorRelations
  url: https://investors.x-energy.com
- type: LinkedIn
  url: https://www.linkedin.com/company/x-energy-llc
- type: Twitter
  url: https://twitter.com/x_energy_nuclear
- type: Facebook
  url: https://www.facebook.com/xenergynuclear
- type: YouTube
  url: https://www.youtube.com/@xenergyllc
- type: Instagram
  url: https://www.instagram.com/x_energy_nuclear
- type: TikTok
  url: https://www.tiktok.com/@x_energy_nuclear
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com