Sublime Systems

Sublime Systems is a Somerville, Massachusetts cement manufacturer spun out of MIT that makes Sublime Cement, a low-carbon replacement for ordinary portland cement. Its ambient-temperature electrochemical "refinery for rocks" process extracts reactive calcium and silicates from low-value rocks and industrial byproducts and blends them into an ASTM-compliant cement that drops into existing concrete mix designs and equipment. The company sells through general-contractor distribution partners and publishes no developer program, API, SDK or machine-readable contract of any kind.

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

Sublime Systems’ developer surface includes engineering blog and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

7.6/100 minimal Agent 0/100 human only Full breakdown ↓
scored 2026-09-18 · rubric v0.22.0

0 APIs

Company CementConstruction MaterialsClimate Tech Decarbonization ManufacturingElectrochemistry

Kin Score

Kin Score How this is scored →
scored 2026-09-18 · rubric v0.22.0

Composite quality — 7.6/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.5 / 20

Access Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

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

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.

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Security Posture 1

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

Sublime Systems 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

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 5

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

LinkedIn

Careers

Careers

Other 1

Properties that don't map to a standard resource type

SecondaryMarket

SecondaryMarket

Source (apis.yml)

aid: sublime-systems
name: Sublime Systems
description: Sublime Systems is a Somerville, Massachusetts cement manufacturer spun out of MIT that makes Sublime Cement,
  a low-carbon replacement for ordinary portland cement. Its ambient-temperature electrochemical "refinery for rocks" process
  extracts reactive calcium and silicates from low-value rocks and industrial byproducts and blends them into an ASTM-compliant
  cement that drops into existing concrete mix designs and equipment. The company sells through general-contractor distribution
  partners and publishes no developer program, API, SDK or machine-readable contract of any kind.
url: https://raw.githubusercontent.com/api-evangelist/sublime-systems/refs/heads/main/apis.yml
image: https://sublime-systems.com/wp-content/uploads/2025/05/image-3.jpg
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-09-18'
modified: '2026-09-18'
tags:
- Company
- Cement
- Construction Materials
- Climate Tech
- Decarbonization
- Manufacturing
- Electrochemistry
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://sublime-systems.com
- type: Blog
  url: https://sublime-systems.com/news/
- type: BlogRSS
  url: https://sublime-systems.com/feed/
- type: PrivacyPolicy
  url: https://sublime-systems.com/privacy-policy/
- type: Contact
  url: https://sublime-systems.com/build/
- type: LinkedIn
  url: https://www.linkedin.com/company/sublime-cement/
- type: Careers
  url: https://jobs.lever.co/SublimeSystems
- type: SecondaryMarket
  url: https://www.hiive.com/securities/sublime-systems-stock
- type: DomainSecurity
  url: security/sublime-systems-domain-security.yml
x-enrichment:
  date: '2026-09-18'
  status: minimal
  artifacts_added: 2
  pass: local-v3
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Sublime Systems manufactures low-carbon cement sold through general-contractor distribution partners; sublime-systems.com
    is a WordPress marketing site with no developer section, and every OpenAPI, GraphQL, llms.txt, agent-card and /.well-known/
    path probed on it returned 404.
  evidence:
  - url: https://sublime-systems.com/
    status: 200
  - url: https://sublime-systems.com/developers
    status: 404
  - url: https://sublime-systems.com/openapi.json
    status: 404
  - url: https://sublime-systems.com/.well-known/agent-card.json
    status: 404
  - url: https://sublime-systems.com/.well-known/security.txt
    status: 404
  checked: '2026-09-18'

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