Cala Systems

Cala Systems designs and manufactures intelligent heat pump water heaters that customize heating for each home daily, delivering reliable hot water while significantly reducing energy costs. Proudly designed and assembled in the USA, the company focuses on innovative, energy‑efficient solutions for residential water heating, backed by extensive technical specifications, savings calculators, and a network of professional installers.

Cala Systems is listed with 1 API on the APIs.io network. Tagged areas include Company, HeatPump, WaterHeater, EnergyEfficiency, and USA.

Cala Systems’ developer surface includes support, engineering blog, getting-started guide, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
16.2/100 emerging Agent 8/100 agent aware Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0
1 API
CompanyHeatPumpWaterHeaterEnergyEfficiencyUSA

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0
Composite quality — 16.2/100 · emerging
Contract Quality 0.0 / 21
Developer Ergonomics 3.2 / 17
Access Clarity 5.8 / 17
Operational Transparency 0.0 / 11
Contract Governance 0.0 / 10
Discoverability 5.0 / 9
Regulatory Posture 2.1 / 15
Agent readiness — 8/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 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 5 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 5 / 5
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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/cala-systems: 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 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Cala Systems API

No public developer API documented; only a Shopify storefront GraphQL endpoint was discovered, which belongs to Shopify, not Cala Systems.

Security Posture 1

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

Cala Systems Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login
Login
 GettingStarted
GettingStarted

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Newsroom
Newsroom
 Blog
Blog
 Website
Website

Other 3

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors
 Image
Image

Source (apis.yml)

apis.yml Raw ↑ 
aid: cala-systems
name: Cala Systems
image: https://cdn.prod.website-files.com/66ab6ecca15b64cceee53ca0/66c8477e956e0699ad18307d_cala-og-preview.png
description: Cala Systems designs and manufactures intelligent heat pump water heaters that customize heating for each home
  daily, delivering reliable hot water while significantly reducing energy costs. Proudly designed and assembled in the USA,
  the company focuses on innovative, energy‑efficient solutions for residential water heating, backed by extensive technical
  specifications, savings calculators, and a network of professional installers.
url: https://raw.githubusercontent.com/api-evangelist/cala-systems/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-06 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-06'
modified: '2026-10-06'
tags:
- Company
- HeatPump
- WaterHeater
- EnergyEfficiency
- USA
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: LLMsTxt
  url: llms/cala-systems-llms.txt
- type: WellKnown
  url: well-known/cala-systems-well-known.yml
- type: Hosts
  url: hosts/cala-systems-hosts.yml
- type: Vendors
  url: vendors/cala-systems-vendors.yml
- type: TermsOfService
  url: https://www.calasystems.com/terms-of-sale
- type: Support
  url: https://www.calasystems.com/mobile-app/support
- type: PrivacyPolicy
  url: https://www.calasystems.com/privacy-policy
- type: Newsroom
  url: https://www.calasystems.com/news/were-shipping-cala
- type: Login
  url: https://www.calasystems.com/log-in
- type: Blog
  url: https://www.calasystems.com/blog
- type: GettingStarted
  url: https://www.calasystems.com/news/the-ira-may-be-ending-but-the-future-of-heat-pump-water-heaters-is-just-getting-started
- type: DomainSecurity
  url: security/cala-systems-domain-security.yml
- type: Website
  url: https://www.calasystems.com/
- type: Image
  url: https://cdn.prod.website-files.com/66ab6ecca15b64cceee53ca0/66c8477e956e0699ad18307d_cala-og-preview.png
apis:
- name: Cala Systems API
  description: No public developer API documented; only a Shopify storefront GraphQL endpoint was discovered, which belongs
    to Shopify, not Cala Systems.
  humanURL: https://www.calasystems.com/
  baseURL: null
  aid: cala-systems:cala-systems-api
x-enrichment:
  date: '2026-10-06'
  status: enriched
  artifacts_added: 10
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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