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