Amprius Technologies

Amprius Technologies is a Fremont, California-based developer and manufacturer of high-energy density lithium-ion batteries built on a proprietary 100% silicon anode platform. Its flagship SiCore and SiMaxx cell families are marketed as among the industry's highest gravimetric and volumetric energy density rechargeable cells, enabling longer endurance, faster charging, and higher payload capacity than conventional graphite-anode chemistries. Amprius targets aviation and aerospace (high-altitude pseudo-satellites, unmanned aerial systems, electric vertical takeoff and landing aircraft), defense (US Army soldier-worn power, BAE Systems), light electric vehicles, robotics, and AI hardware. Public references include AALTO's Airbus-derived Zephyr HAPS programs, Prismatic's PHASA-35 stratospheric aircraft, Nokia Drone Networks, and Matternet drone delivery. The company runs pilot manufacturing and R&D in Fremont and is scaling a GWh-scale Brighton, Colorado plant alongside contract manufacturing partnerships in Asia. Amprius is publicly traded on the New York Stock Exchange under the ticker AMPX. It is certified to ISO 9001:2015 and AS9100:2016. Amprius sells cells, modules, and engineering services to OEMs and defense primes; it does not publish a developer API, SDK, or open-source battery telemetry interface, and has no public GitHub organization.

Amprius Technologies is profiled on the APIs.io network. Tagged areas include Batteries, Lithium-Ion, Silicon Anode, Energy Density, and Energy Storage.

Amprius Technologies’ developer surface includes product news, YouTube channel, engineering blog, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

3.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Batteries Lithium-Ion Silicon AnodeEnergy DensityEnergy Storage Aviation Aerospace Defense Unmanned Aerial SystemsHigh Altitude Pseudo SatellitesElectric Vehicles Robotics Hardware Manufacturing Public Company

Kin Score

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

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

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/amprius: 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.

Amprius Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Learn 1

Tutorials, courses, talks, and written guidance

YouTube

YouTube

Operate 2

Status, limits, changes, and where to get help

Contact

Contact

PressReleases

PressReleases

Company 8

The organization behind the API

Website

Partnerships

News

Careers

InvestorRelations

InvestorRelations

Twitter

Twitter

LinkedIn

Blog

Blog

Scroll for all 8

Other 5

Properties that don't map to a standard resource type

Industries

Manufacturing

Technology

SECFilings

StockQuote

Source (apis.yml)

aid: amprius
name: Amprius Technologies
description: Amprius Technologies is a Fremont, California-based developer and manufacturer of high-energy density lithium-ion
  batteries built on a proprietary 100% silicon anode platform. Its flagship SiCore and SiMaxx cell families are marketed
  as among the industry's highest gravimetric and volumetric energy density rechargeable cells, enabling longer endurance,
  faster charging, and higher payload capacity than conventional graphite-anode chemistries. Amprius targets aviation and
  aerospace (high-altitude pseudo-satellites, unmanned aerial systems, electric vertical takeoff and landing aircraft), defense
  (US Army soldier-worn power, BAE Systems), light electric vehicles, robotics, and AI hardware. Public references include
  AALTO's Airbus-derived Zephyr HAPS programs, Prismatic's PHASA-35 stratospheric aircraft, Nokia Drone Networks, and Matternet
  drone delivery. The company runs pilot manufacturing and R&D in Fremont and is scaling a GWh-scale Brighton, Colorado plant
  alongside contract manufacturing partnerships in Asia. Amprius is publicly traded on the New York Stock Exchange under the
  ticker AMPX. It is certified to ISO 9001:2015 and AS9100:2016. Amprius sells cells, modules, and engineering services to
  OEMs and defense primes; it does not publish a developer API, SDK, or open-source battery telemetry interface, and has no
  public GitHub organization.
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/amprius.png
tags:
- Batteries
- Lithium-Ion
- Silicon Anode
- Energy Density
- Energy Storage
- Aviation
- Aerospace
- Defense
- Unmanned Aerial Systems
- High Altitude Pseudo Satellites
- Electric Vehicles
- Robotics
- Hardware
- Manufacturing
- Public Company
tags_raw:
- Batteries
- Lithium Ion
- Silicon Anode
- Energy Density
- Energy Storage
- Aviation
- Aerospace
- Defense
- Unmanned Aerial Systems
- High Altitude Pseudo Satellites
- Electric Vehicles
- Robotics
- Hardware
- Manufacturing
- Public Company
url: https://raw.githubusercontent.com/api-evangelist/amprius/refs/heads/main/apis.yml
x-api-posture: no-product-api
x-api-posture-basis: observed
x-api-posture-note: Amprius sells cells, modules, and engineering services to OEMs and defense primes; it does not publish
  a developer API, SDK, or open-source battery telemetry interface, and has no public GitHub organi
created: '2026-05-24'
modified: '2026-05-24'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/amprius-domain-security.yml
- type: Website
  url: https://amprius.com
- type: Solutions
  url: https://amprius.com/solutions/
- type: Industries
  url: https://amprius.com/industries/
- type: Manufacturing
  url: https://amprius.com/manufacturing/
- type: Partnerships
  url: https://amprius.com/partnerships/
- type: Technology
  url: https://amprius.com/technology/
- type: News
  url: https://amprius.com/news/
- type: Careers
  url: https://amprius.com/careers/
- type: Contact
  url: https://amprius.com/contact/
- type: InvestorRelations
  url: https://ir.amprius.com
- type: SECFilings
  url: https://ir.amprius.com/financials/sec-filings
- type: PressReleases
  url: https://ir.amprius.com/news/news-releases
- type: StockQuote
  url: https://ir.amprius.com/stock-data/quote-chart
- type: Twitter
  url: https://twitter.com/ampriusInc
- type: LinkedIn
  url: https://www.linkedin.com/company/amprius-technologies
- type: YouTube
  url: https://www.youtube.com/@ampriustechnologies
- url: https://amprius.com/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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