Oklo

Oklo Inc. is a Santa Clara, California advanced fission company designing and deploying small modular reactors under the Aurora powerhouse brand. The Aurora is a liquid-metal (sodium) cooled, metal-fueled fast reactor derived from the Experimental Breeder Reactor-II (EBR-II) lineage, engineered as a "walk-away safe" passively cooled system that is self-stabilizing and self-controlling under loss-of-coolant and loss-of-shutdown conditions. Oklo's reactors are intended to run on recycled high-assay low-enriched uranium (HALEU) fuel, including legacy EBR-II material, with the company building out three vertically integrated fast-reactor businesses: clean power generation, advanced nuclear fuel fabrication and recycling, and medical radioisotope production. The first commercial Aurora is targeted for operation at Idaho National Laboratory (INL) in late 2027 to early 2028, supported by selection into the DOE Reactor Pilot Program and Fuel Line Pilot Projects, and the company has completed an NRC Phase 1 pre-application assessment. Oklo went public in May 2024 via merger with AltC Acquisition Corp (a SPAC co-founded by Sam Altman, who serves as chairman) and trades on the NYSE under ticker OKLO. Oklo's commercial posture is utility-scale and industrial — selling power, fuel cycle services, and isotopes to data center operators, defense customers, and industrial offtakers — and the company exposes no public developer API, SDK, or open source software.

Oklo is profiled on the APIs.io network. Tagged areas include Energy, Nuclear, Advanced Fission, Small Modular Reactor, and Fast Reactor.

Oklo’s developer surface includes YouTube channel and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

3.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Energy NuclearAdvanced FissionSmall Modular ReactorFast ReactorSodium CooledHALEUAurora PowerhouseFuel RecyclingRadioisotopes Clean Energy Data Center Power Hardware

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 3.3/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/oklo: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

Oklo Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Build 1

SDKs, sample code, and the tooling you integrate with

FuelRecycling

FuelRecycling

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

About

Newsroom

Investors

Careers

Twitter

LinkedIn

Facebook

Facebook

Instagram

Instagram

Scroll for all 9

Other 3

Properties that don't map to a standard resource type

Technology

Technology

Energy

Energy

Isotopes

Isotopes

Source (apis.yml)

aid: oklo
name: Oklo
description: 'Oklo Inc. is a Santa Clara, California advanced fission company designing and deploying small modular reactors
  under the Aurora powerhouse brand. The Aurora is a liquid-metal (sodium) cooled, metal-fueled fast reactor derived from
  the Experimental Breeder Reactor-II (EBR-II) lineage, engineered as a "walk-away safe" passively cooled system that is self-stabilizing
  and self-controlling under loss-of-coolant and loss-of-shutdown conditions. Oklo''s reactors are intended to run on recycled
  high-assay low-enriched uranium (HALEU) fuel, including legacy EBR-II material, with the company building out three vertically
  integrated fast-reactor businesses: clean power generation, advanced nuclear fuel fabrication and recycling, and medical
  radioisotope production. The first commercial Aurora is targeted for operation at Idaho National Laboratory (INL) in late
  2027 to early 2028, supported by selection into the DOE Reactor Pilot Program and Fuel Line Pilot Projects, and the company
  has completed an NRC Phase 1 pre-application assessment. Oklo went public in May 2024 via merger with AltC Acquisition Corp
  (a SPAC co-founded by Sam Altman, who serves as chairman) and trades on the NYSE under ticker OKLO. Oklo''s commercial posture
  is utility-scale and industrial — selling power, fuel cycle services, and isotopes to data center operators, defense customers,
  and industrial offtakers — and the company exposes no public developer API, SDK, or open source software.'
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Producing
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/oklo.png
tags:
- Energy
- Nuclear
- Advanced Fission
- Small Modular Reactor
- Fast Reactor
- Sodium Cooled
- HALEU
- Aurora Powerhouse
- Fuel Recycling
- Radioisotopes
- Clean Energy
- Data Center Power
- Hardware
url: https://raw.githubusercontent.com/api-evangelist/oklo/refs/heads/main/apis.yml
created: '2026-05-24'
modified: '2026-05-24'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/oklo-domain-security.yml
- type: Website
  url: https://oklo.com
- type: Technology
  url: https://oklo.com/technology
- type: Energy
  url: https://oklo.com/energy
- type: FuelRecycling
  url: https://oklo.com/fuel-recycling
- type: Isotopes
  url: https://oklo.com/isotopes
- type: About
  url: https://oklo.com/about
- type: Newsroom
  url: https://oklo.com/newsroom
- type: Investors
  url: https://investors.oklo.com
- type: Careers
  url: https://oklo.com/careers
- type: Contact
  url: https://oklo.com/contact
- type: Twitter
  url: https://twitter.com/oklo
- type: LinkedIn
  url: https://www.linkedin.com/company/oklo-inc
- type: YouTube
  url: https://www.youtube.com/@OkloInc
- type: Facebook
  url: https://www.facebook.com/OkloInc
- type: Instagram
  url: https://www.instagram.com/oklo_inc
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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