Achates Power

Achates Power is a San Diego, California engine technology company founded in 2004 by Dr. James Lemke and John Walton that develops opposed-piston, two-stroke compression-ignition engine architecture and licenses the resulting engine designs, development tools, simulation software and patents to engine manufacturers and OEMs. Its engines target passenger vehicles, medium and heavy-duty commercial trucks, military vehicles, and off-road and power-generation applications, and the company has claimed fuel-efficiency improvements of as much as 30 percent over conventional engines at comparable or better emissions. Achates Power has received U.S. Army TARDEC, Department of Energy and ARPA-E funding and partners with engine manufacturers such as Fairbanks Morse. It is a privately held hardware and engineering licensing business and publishes no public developer program, API, or machine-readable API artifacts.

Achates Power is profiled on the APIs.io network. Tagged areas include Company, Automotive, Engines, Manufacturing, and Clean Technology.

Achates Power’s developer surface includes engineering blog and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

11.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0

0 APIs

CompanyAutomotiveEnginesManufacturingClean TechnologyTransportationDefensePower Generation

Kin Score

Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0

Composite quality — 11.0/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Commercial Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

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/achates-power: 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

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 5

The organization behind the API

Website

Blog

BlogRSS

Careers

About

Other 1

Properties that don't map to a standard resource type

SecondaryMarket

SecondaryMarket

Source (apis.yml)

aid: achates-power
name: Achates Power
description: Achates Power is a San Diego, California engine technology company founded in 2004 by Dr. James Lemke and John
  Walton that develops opposed-piston, two-stroke compression-ignition engine architecture and licenses the resulting engine
  designs, development tools, simulation software and patents to engine manufacturers and OEMs. Its engines target passenger
  vehicles, medium and heavy-duty commercial trucks, military vehicles, and off-road and power-generation applications, and
  the company has claimed fuel-efficiency improvements of as much as 30 percent over conventional engines at comparable or
  better emissions. Achates Power has received U.S. Army TARDEC, Department of Energy and ARPA-E funding and partners with
  engine manufacturers such as Fairbanks Morse. It is a privately held hardware and engineering licensing business and publishes
  no public developer program, API, or machine-readable API artifacts.
image: https://achatespower.com/wp-content/uploads/2019/10/AchatesPower_Logo_RBG.svg
url: https://raw.githubusercontent.com/api-evangelist/achates-power/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Automotive
- Engines
- Manufacturing
- Clean Technology
- Transportation
- Defense
- Power Generation
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/achates-power-domain-security.yml
- type: Website
  url: https://achatespower.com/
- type: Blog
  url: https://achatespower.com/news-blog/
- type: BlogRSS
  url: https://achatespower.com/news-blog/feed/
- type: PrivacyPolicy
  url: https://achatespower.com/privacy-policy/
- type: TermsOfService
  url: https://achatespower.com/wp-content/uploads/2020/03/achates_power_terms_and_conditions.pdf
- type: Careers
  url: https://achatespower.com/careers/
- type: About
  url: https://achatespower.com/about-achates-power/
- type: SecondaryMarket
  url: https://forgeglobal.com/achates-power_stock/
x-enrichment:
  date: '2026-08-06'
  status: minimal
  artifacts_added: 1
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Achates Power licenses opposed-piston engine hardware designs and simulation tooling to OEMs under contract; its
    entire 26-page WordPress sitemap contains no developer, API or docs page, its only partner surface is a supplier-application
    contact form, and no api/developer/docs subdomain resolves in DNS.
  evidence:
  - url: https://achatespower.com/openapi.json
    status: 404
  - url: https://achatespower.com/.well-known/agent-card.json
    status: 404
  - url: https://achatespower.com/.well-known/security.txt
    status: 404
  - url: https://achatespower.com/llms.txt
    status: 404
  - url: https://achatespower.com/page-sitemap.xml
    status: 200
  - url: https://achatespower.com/supplier-portal/
    status: 200
  checked: '2026-08-06'