Brimstone website screenshot

Brimstone

Brimstone is a materials technology company decarbonizing heavy industry through a single-rock co-production process it calls the Rock Refinery. From ordinary calcium silicate rock it extracts multiple high-value materials at once - carbon-negative Portland cement and supplementary cementitious materials, alumina and aluminum, magnesium, titanium, iron/steel feedstock and critical minerals - aiming to use 100% of the feed rock and eliminate tailings while cutting process emissions. The company uses commercially available equipment for a low-cost, market-ready approach, and has secured commitments including Amazon as a buyer of low-carbon cement from its first commercial plant. Brimstone is a private heavy-industry / climate-tech company backed by DCVC and Fifth Wall; it operates no public developer API.

Brimstone is profiled on the APIs.io network. Tagged areas include Company, Climate Tech, Materials, Cement, and Decarbonization.

Brimstone’s developer surface includes engineering blog and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
9.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyClimate TechMaterialsCementDecarbonizationCritical MineralsManufacturingHeavy Industry

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 9.3/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 2.1 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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
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/brimstone: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

Brimstone Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: brimstone
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/brimstone.png
name: Brimstone
description: Brimstone is a materials technology company decarbonizing heavy industry through a single-rock co-production
  process it calls the Rock Refinery. From ordinary calcium silicate rock it extracts multiple high-value materials at once
  - carbon-negative Portland cement and supplementary cementitious materials, alumina and aluminum, magnesium, titanium, iron/steel
  feedstock and critical minerals - aiming to use 100% of the feed rock and eliminate tailings while cutting process emissions.
  The company uses commercially available equipment for a low-cost, market-ready approach, and has secured commitments including
  Amazon as a buyer of low-carbon cement from its first commercial plant. Brimstone is a private heavy-industry / climate-tech
  company backed by DCVC and Fifth Wall; it operates no public developer API.
url: https://raw.githubusercontent.com/api-evangelist/brimstone/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- dcvc
- fifth-wall
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Climate Tech
- Materials
- Cement
- Decarbonization
- Critical Minerals
- Manufacturing
- Heavy Industry
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/brimstone-domain-security.yml
- type: Website
  url: https://www.brimstone.com/
- type: Blog
  url: https://www.brimstone.com/media
- type: PrivacyPolicy
  url: https://www.brimstone.com/privacy-policy
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence