Kelvin

Kelvin (kelvin°) is a Paris-based startup, founded in 2023 and backed by Seedcamp, building an AI-powered commercial platform for the home energy-renovation industry in France. Its tools help RGE-certified artisans, renovation contractors, general contractors, CEE delegatees and trade platforms find and qualify renovation prospects, generate leads through embeddable address-based simulators, automatically compute energy-efficiency scenarios and government aids (MaPrimeRenov / CEE) with remaining customer cost, and assemble complete financing packages. The AI is trained by thermal engineers and architects and uses open data plus computer vision to assess buildings without a recent DPE. More than 4,000 artisans and sales reps use Kelvin to prospect, prepare appointments and quote work.

Kelvin is profiled on the APIs.io network. Tagged areas include Company, Energy, Energy Efficiency, Home Renovation, and Construction.

Kelvin’s developer surface includes engineering blog, signup flow, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

11.9/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyEnergyEnergy EfficiencyHome RenovationConstructionArtificial IntelligenceLead GenerationSales EnablementFranceSustainability

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 11.9/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.4 / 20

Commercial Clarity 4.7 / 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/kelvin: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

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)

aid: kelvin
name: Kelvin
description: Kelvin (kelvin°) is a Paris-based startup, founded in 2023 and backed by Seedcamp, building an AI-powered commercial
  platform for the home energy-renovation industry in France. Its tools help RGE-certified artisans, renovation contractors,
  general contractors, CEE delegatees and trade platforms find and qualify renovation prospects, generate leads through embeddable
  address-based simulators, automatically compute energy-efficiency scenarios and government aids (MaPrimeRenov / CEE) with
  remaining customer cost, and assemble complete financing packages. The AI is trained by thermal engineers and architects
  and uses open data plus computer vision to assess buildings without a recent DPE. More than 4,000 artisans and sales reps
  use Kelvin to prospect, prepare appointments and quote work.
url: https://raw.githubusercontent.com/api-evangelist/kelvin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- seedcamp
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://cdn.prod.website-files.com/6655caeb6e3835fd7ee50dd6/67a1271dde24f8ccdf843524_Kelvin-Wordmark.svg
tags:
- Company
- Energy
- Energy Efficiency
- Home Renovation
- Construction
- Artificial Intelligence
- Lead Generation
- Sales Enablement
- France
- Sustainability
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://go-kelvin.com
- type: Blog
  url: https://go-kelvin.com/ressources
- type: SignUp
  url: https://go-kelvin.com/creer-un-compte-kelvin
- type: Login
  url: https://app.go-kelvin.com/users/sign_in
- type: PrivacyPolicy
  url: https://go-kelvin.com/gestion-des-donnees
- type: LLMsTxt
  url: llms/kelvin-llms.txt
- type: DomainSecurity
  url: security/kelvin-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence