Sion Power

Sion Power Corporation is a Tucson, Arizona lithium-metal battery developer and manufacturer, spun out of Brookhaven National Laboratory in 1989. Its Licerion platform pairs a protected lithium-metal anode with proprietary electrolyte and cell engineering to deliver rechargeable cells with roughly double the gravimetric energy density of conventional lithium-ion, targeting defense and aerospace systems, uncrewed aircraft, and electrified mobility. The company operates a 115,000-square-foot R&D and pilot manufacturing facility, holds more than 430 international patents and applications, and has raised over $230 million from investors including LG Energy Solution. Sion Power sells physical battery cells under development agreements with OEMs; it publishes no developer program, public API, SDK, or machine-readable API contract of any kind.

Sion Power is profiled on the APIs.io network. Tagged areas include Company, Batteries, Energy Storage, Lithium Metal, and Manufacturing.

Sion Power’s developer surface includes product news and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

3.3/100 minimal ▬ flat Agent 0/100 human only Front door AI 1/6 silent Heartbeat 37/100 slowing Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs

Company Batteries Energy StorageLithium MetalManufacturing Advanced Materials Defense Aerospace Electric Vehicles Hardware

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

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 3.9 / 9

Regulatory Posture 0.7 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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<a href="https://apis.io/providers/sion-power/"><img src="https://apis.io/badge/sion-power/card.svg" alt="Sion Power on APIs.io — Kin Score by API Evangelist"></a>

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 0.0 — up to +20.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/sion-power/apis.yml: open an issue on github.com/api-evangelist/sion-power to ask a question or point us at an artifact you publish. 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.

Sion Power Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Company 5

The organization behind the API

Website

About

Partners

News

Careers

Other 3

Properties that don't map to a standard resource type

Product

Product

Technology

Technology

SecondaryMarket

SecondaryMarket

Source (apis.yml)

aid: sion-power
name: Sion Power
description: Sion Power Corporation is a Tucson, Arizona lithium-metal battery developer and manufacturer, spun out of Brookhaven
  National Laboratory in 1989. Its Licerion platform pairs a protected lithium-metal anode with proprietary electrolyte and
  cell engineering to deliver rechargeable cells with roughly double the gravimetric energy density of conventional lithium-ion,
  targeting defense and aerospace systems, uncrewed aircraft, and electrified mobility. The company operates a 115,000-square-foot
  R&D and pilot manufacturing facility, holds more than 430 international patents and applications, and has raised over $230
  million from investors including LG Energy Solution. Sion Power sells physical battery cells under development agreements
  with OEMs; it publishes no developer program, public API, SDK, or machine-readable API contract of any kind.
url: https://raw.githubusercontent.com/api-evangelist/sion-power/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
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
  probe_state: none
  source:
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-08-27'
modified: '2026-08-27'
tags:
- Company
- Batteries
- Energy Storage
- Lithium Metal
- Manufacturing
- Advanced Materials
- Defense
- Aerospace
- Electric Vehicles
- Hardware
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/sion-power-domain-security.yml
- type: Website
  url: https://sionpower.com/
- type: About
  url: https://sionpower.com/company/
- type: Product
  url: https://sionpower.com/product/
- type: Technology
  url: https://sionpower.com/technology/
- type: Partners
  url: https://sionpower.com/partners/
- type: News
  url: https://sionpower.com/news/
- type: Careers
  url: https://sionpower.com/careers/
- type: Contact
  url: https://sionpower.com/contact/
- type: SecondaryMarket
  url: https://forgeglobal.com/sion-power_stock/
x-enrichment:
  date: '2026-08-27'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Sion Power manufactures physical lithium-metal battery cells under OEM development agreements; sionpower.com is
    an eight-page WordPress marketing site with no developer, docs or API section, and every contract-discovery probe (/openapi.json,
    /swagger.json, /api-docs, /graphql, /.well-known/*) returned the theme's 404 page, leaving the WordPress /wp-json/ CMS
    endpoint (401 rest_api_authentication_required) as the only API-shaped surface on the domain.
  evidence:
  - url: https://sionpower.com/openapi.json
    status: 404
  - url: https://sionpower.com/graphql
    status: 404
  - url: https://sionpower.com/.well-known/agent-card.json
    status: 404
  - url: https://sionpower.com/wp-json/
    status: 401
  - url: https://sionpower.com/sitemap.xml
    status: 200
  checked: '2026-08-27'

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