Supercritical

Supercritical is a London-based carbon removal marketplace founded in 2021 by Michelle You and Aaron Randall, the team behind Songkick. The company builds the market infrastructure that turns carbon dioxide removal (CDR) commitments into delivered tonnes, connecting corporate buyers with vetted suppliers of durable, engineered, and nature-engineered carbon removal. Supercritical's marketplace covers the major durable CDR pathways — biochar, BECCS, enhanced weathering, direct air capture (DAC), DAC with ocean storage, woody biomass sinking, and bio-oil — with published per-tonne pricing and live availability data. The platform layers a proprietary 118-point vetting protocol on top of supplier listings, spanning climate science, environmental impact, delivery risk, and social benefits, and reports that 84% of assessed projects fail to meet its standards. Supercritical also provides supply sourcing and creation services to originate new CDR projects, buffer-pool-based delivery-risk mitigation, and policy and science advisory work (its team advises SBTi on CDR guidance). Customers include Virgin Atlantic, The Economist Group, Rothschild & Co, XTX Markets, and Tide, with reported coverage of roughly 80% of the global durable CDR market and 1.3M tonnes contracted across 200+ corporate buyers and 600+ tracked suppliers. The business is funded by Lightspeed Venture Partners, MMC Ventures, and GreenCode Ventures. Supercritical does not currently publish a public developer API, SDK, or open-source repository; transactions, supplier discovery, and pricing data are delivered through its hosted marketplace, advisor relationships, and contracted buyer accounts.

Supercritical is profiled on the APIs.io network. Tagged areas include Carbon Removal, Durable CDR, Engineered Carbon Removal, Carbon Markets, and Climate Tech.

Supercritical’s developer surface includes engineering blog and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

2.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Carbon RemovalDurable CDREngineered Carbon RemovalCarbon Markets Climate Tech Net Zero BiocharBECCSEnhanced Weathering Direct Air CaptureWoody Biomass SinkingBio-OilMarketplace Sustainability ESG

Kin Score

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

Composite quality — 2.0/100 · 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 1.1 / 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 Banking & Open Finance 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/supercritical: 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.

Supercritical Domain Security

TLSv1.3 · HSTS · 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 6

The organization behind the API

Website

About

Blog

Careers

LinkedIn

Crunchbase

Crunchbase

Other 6

Properties that don't map to a standard resource type

CarbonRemoval

ForBuyers

ForSuppliers

Marketplace

Resources

CDRfyi

Source (apis.yml)

aid: supercritical
name: Supercritical
description: Supercritical is a London-based carbon removal marketplace founded in 2021 by Michelle You and Aaron Randall,
  the team behind Songkick. The company builds the market infrastructure that turns carbon dioxide removal (CDR) commitments
  into delivered tonnes, connecting corporate buyers with vetted suppliers of durable, engineered, and nature-engineered carbon
  removal. Supercritical's marketplace covers the major durable CDR pathways — biochar, BECCS, enhanced weathering, direct
  air capture (DAC), DAC with ocean storage, woody biomass sinking, and bio-oil — with published per-tonne pricing and live
  availability data. The platform layers a proprietary 118-point vetting protocol on top of supplier listings, spanning climate
  science, environmental impact, delivery risk, and social benefits, and reports that 84% of assessed projects fail to meet
  its standards. Supercritical also provides supply sourcing and creation services to originate new CDR projects, buffer-pool-based
  delivery-risk mitigation, and policy and science advisory work (its team advises SBTi on CDR guidance). Customers include
  Virgin Atlantic, The Economist Group, Rothschild & Co, XTX Markets, and Tide, with reported coverage of roughly 80% of the
  global durable CDR market and 1.3M tonnes contracted across 200+ corporate buyers and 600+ tracked suppliers. The business
  is funded by Lightspeed Venture Partners, MMC Ventures, and GreenCode Ventures. Supercritical does not currently publish
  a public developer API, SDK, or open-source repository; transactions, supplier discovery, and pricing data are delivered
  through its hosted marketplace, advisor relationships, and contracted buyer accounts.
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/supercritical.png
tags:
- Carbon Removal
- Durable CDR
- Engineered Carbon Removal
- Carbon Markets
- Climate Tech
- Net Zero
- Biochar
- BECCS
- Enhanced Weathering
- Direct Air Capture
- Woody Biomass Sinking
- Bio-Oil
- Marketplace
- Sustainability
- ESG
url: https://raw.githubusercontent.com/api-evangelist/supercritical/refs/heads/main/apis.yml
created: '2026-05-24'
modified: '2026-05-24'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/supercritical-domain-security.yml
- type: Website
  url: https://gosupercritical.com
- type: About
  url: https://gosupercritical.com/about-us
- type: CarbonRemoval
  url: https://gosupercritical.com/carbon-removal
- type: ForBuyers
  url: https://gosupercritical.com/for-buyers
- type: ForSuppliers
  url: https://gosupercritical.com/for-suppliers
- type: Marketplace
  url: https://climate.gosupercritical.com/marketplace/
- type: Resources
  url: https://gosupercritical.com/resources
- type: Blog
  url: https://gosupercritical.com/blog
- type: Careers
  url: https://gosupercritical.com/jobs
- type: Contact
  url: https://gosupercritical.com/contact
- type: LinkedIn
  url: https://www.linkedin.com/company/gosupercritical
- type: Crunchbase
  url: https://www.crunchbase.com/organization/supercritical
- type: CDRfyi
  url: https://www.cdr.fyi/marketplace/supercritical
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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