Plans

Plans (plans.app, formerly lun.energy) is a climate-technology company focused on decarbonising the built world. It removes the friction that stands in the way of transitioning homes to low-carbon energy faster, letting professionals capture building data on a mobile device, analyze it, and produce retrofit / energy plans — "capture, analyze, plan, all in your pocket." A web platform (platform.plans.app) and a Chrome extension support the workflow, and the product is offered across English, Danish, and French markets. Plans is backed by Partech. No public developer API has been identified during enrichment; the platform is a login-gated single-page application and the site exposes no OpenAPI, SDKs, docs, or developer portal.

Plans is profiled on the APIs.io network. Tagged areas include Company, Climate, Energy, Decarbonization, and Built World.

Plans’ developer surface includes signup flow and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

15.6/100 emerging ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyClimateEnergyDecarbonizationBuilt WorldHome RetrofitConstruction TechSustainability

Kin Score

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

Composite quality — 15.6/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 6.8 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 4/100 · 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 4 / 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/plans: 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

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Careers

Careers

Source (apis.yml)

aid: plans
name: Plans
description: Plans (plans.app, formerly lun.energy) is a climate-technology company focused on decarbonising the built world.
  It removes the friction that stands in the way of transitioning homes to low-carbon energy faster, letting professionals
  capture building data on a mobile device, analyze it, and produce retrofit / energy plans — "capture, analyze, plan, all
  in your pocket." A web platform (platform.plans.app) and a Chrome extension support the workflow, and the product is offered
  across English, Danish, and French markets. Plans is backed by Partech. No public developer API has been identified during
  enrichment; the platform is a login-gated single-page application and the site exposes no OpenAPI, SDKs, docs, or developer
  portal.
url: https://raw.githubusercontent.com/api-evangelist/plans/refs/heads/main/apis.yml
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://plans.app/apple-touch-icon.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- partech
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Climate
- Energy
- Decarbonization
- Built World
- Home Retrofit
- Construction Tech
- Sustainability
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/plans-domain-security.yml
- type: Website
  url: https://plans.app/
- type: SignUp
  url: https://plans.app/signup
- type: Login
  url: https://platform.plans.app/login
- type: StatusPage
  url: https://plans.hyperping.app
- type: TermsOfService
  url: https://plans.app/legal/terms-and-conditions-en
- type: PrivacyPolicy
  url: https://plans.app/legal/privacy-policy-en
- type: Careers
  url: https://plans.app/careers
- type: Lifecycle
  url: lifecycle/plans-lifecycle.yml
- type: WellKnown
  url: well-known/plans-well-known.yml
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 3
  pass: local-v1