Green Fusion

Green Fusion GmbH is a Berlin-based climate-energy software company that provides an intelligent 360-degree energy management platform for the residential real estate sector (Wohnungswirtschaft). Its software digitizes and optimizes building heating systems: "Der Energiespar-Pilot" delivers digital boiler-room management and optimized operation of conventional heat sources (gas, oil, district heating, CHP/BHKW), while its AI platform for sector coupling (Sektorkopplung) integrates heat pumps, PV systems, storage, and grid connectivity for intelligent monitoring and control. The platform is TUV-certified under GEG section 71a. Green Fusion is backed by HV Capital and surfaced in the API Evangelist network as a climate-energy provider; it operates a customer control platform (control.green-fusion.de) but publishes no public developer API at this time.

Green Fusion is profiled on the APIs.io network. Tagged areas include Company, Climate Energy, Energy Management, Heating, and Building Automation.

Green Fusion’s developer surface includes engineering blog, support, and 5 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

8.9/100 minimal ▬ flat Agent 0/100 human only Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

0 APIs

Company Climate Energy Energy ManagementHeatingBuilding Automation Sustainability Germany IoT

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 8.9/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 2.9 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 1.2 / 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 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/.

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/green-fusion: 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Building Automation (HVAC, BACnet, KNX, smart buildings)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Security Posture 1

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

Green Fusion Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Source (apis.yml)

aid: green-fusion
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  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
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/green-fusion.png
name: Green Fusion
description: 'Green Fusion GmbH is a Berlin-based climate-energy software company that provides an intelligent 360-degree
  energy management platform for the residential real estate sector (Wohnungswirtschaft). Its software digitizes and optimizes
  building heating systems: "Der Energiespar-Pilot" delivers digital boiler-room management and optimized operation of conventional
  heat sources (gas, oil, district heating, CHP/BHKW), while its AI platform for sector coupling (Sektorkopplung) integrates
  heat pumps, PV systems, storage, and grid connectivity for intelligent monitoring and control. The platform is TUV-certified
  under GEG section 71a. Green Fusion is backed by HV Capital and surfaced in the API Evangelist network as a climate-energy
  provider; it operates a customer control platform (control.green-fusion.de) but publishes no public developer API at this
  time.'
url: https://raw.githubusercontent.com/api-evangelist/green-fusion/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- hv-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Climate Energy
- Energy Management
- Heating
- Building Automation
- Sustainability
- Germany
- IoT
apis: []
common:
- type: DomainSecurity
  url: security/green-fusion-domain-security.yml
- type: Website
  url: https://green-fusion.de
- type: Login
  url: https://control.green-fusion.de/
- type: Blog
  url: https://green-fusion.de/aktuelles/news-blog
- type: Support
  url: https://green-fusion.de/uber-uns/kontakt
- type: PrivacyPolicy
  url: https://green-fusion.de/datenschutz
- type: LinkedIn
  url: https://www.linkedin.com/company/green-fusion-gmbh/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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