75F

75F is an IoT-based building management and automation company (Burnsville, Minnesota; acquired by Carrier Global in July 2026) whose vertically integrated platform pairs wireless sensors, thermostats and Central Control Units with cloud software — Facilisight, Portfolio Analytics, Hayloft and Saffron AI — to control and optimize HVAC, lighting and equipment in commercial buildings. Its developer surface is a Project Haystack-compliant REST API published through an Azure API Management gateway at api.75f.io, exposing Haystack ops (read, hisReadMany, pointWrite, hisWriteMany) over Haystack-tagged JSON and ZINC grids, plus a v2 Special Schedules API for exception-based scheduling. Access is OAuth 2.0 client-credentials bearer tokens layered on a product-scoped APIM subscription key, and integrators also reach the system over BACnet IP/MS-TP, Modbus and a Niagara driver.

75F publishes 2 APIs on the APIs.io network. Tagged areas include Company, Building Automation, Smart Buildings, HVAC, and IoT.

75F’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, changelog, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

39.9/100 developing ▬ flat Agent 9/100 agent aware Front door AI 3/6 light Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

2 APIs

Company Building Automation Smart Buildings HVAC IoT Energy ManagementProject HaystackFacilities Management SensorsBuilding Management System

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 39.9/100 · developing

Contract Quality 0.0 / 21

Developer Ergonomics 11.2 / 17

Access Clarity 8.5 / 17

Operational Transparency 3.5 / 11

Contract Governance 1.9 / 10

Discoverability 5.6 / 9

Regulatory Posture 5.8 / 15

Agent readiness — 9/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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/75f: 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 2

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

75F Haystack API

75F's Project Haystack-compliant external REST API. Reads Haystack entity records by filter or by id (read), reads time-series history for many points at once (hisReadMany), and...

75F Special Schedules API

A v2 REST API for exception-based ("special") schedules applied at building or zone level — create, update and delete date-bounded occupancy overrides with mode and heating/cool...

Pricing Plans 1

Published pricing tiers and plan structures.

75F Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

75F Rate Limits

0 limits

RATE LIMITS

Security Posture 3

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

75F Authentication

oauth2/http/apiKey · 2 schemes

SECURITY

75F Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

75F Trust Center

SOC 2, VAPT

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

75F Scopes

2 scopes · clientCredentials

2 scopes

SCOPES

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

X-MCPServerCandidate

X-MCPServerCandidate

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

Lifecycle

Conformance

DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 5

Authentication, authorization, and security posture

Compliance

Authentication

OAuthScopes

DomainSecurity

TrustCenter

Operate 5

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

ChangeLog

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: 75f
name: 75F
description: 75F is an IoT-based building management and automation company (Burnsville, Minnesota; acquired by Carrier Global
  in July 2026) whose vertically integrated platform pairs wireless sensors, thermostats and Central Control Units with cloud
  software — Facilisight, Portfolio Analytics, Hayloft and Saffron AI — to control and optimize HVAC, lighting and equipment
  in commercial buildings. Its developer surface is a Project Haystack-compliant REST API published through an Azure API Management
  gateway at api.75f.io, exposing Haystack ops (read, hisReadMany, pointWrite, hisWriteMany) over Haystack-tagged JSON and
  ZINC grids, plus a v2 Special Schedules API for exception-based scheduling. Access is OAuth 2.0 client-credentials bearer
  tokens layered on a product-scoped APIM subscription key, and integrators also reach the system over BACnet IP/MS-TP, Modbus
  and a Niagara driver.
url: https://raw.githubusercontent.com/api-evangelist/75f/refs/heads/main/apis.yml
image: https://www.datocms-assets.com/55631/1643443175-75f-logo.jpg?w=1000&fit=max&fm=jpg
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: 'enrichment pass 2026-09-05: full contract discovery run; documented Project Haystack REST API, no public machine-readable
  spec'
specificationVersion: '0.20'
created: '2026-09-05'
modified: '2026-09-05'
position: Producing
tags:
- Company
- Building Automation
- Smart Buildings
- HVAC
- IoT
- Energy Management
- Project Haystack
- Facilities Management
- Sensors
- Building Management System
tags_raw:
- Company
- Building Automation
- Smart Buildings
- HVAC
- Internet of Things
- Energy Management
- Project Haystack
- Facilities Management
- Sensors
- Building Management System
apis:
- name: 75F Haystack API
  description: 75F's Project Haystack-compliant external REST API. Reads Haystack entity records by filter or by id (read),
    reads time-series history for many points at once (hisReadMany), and writes to writable points and historized points (pointWrite,
    hisWriteMany). Requests carry an OAuth 2.0 bearer token plus a product-scoped Ocp-Apim-Subscription-Key; responses are
    Haystack grids in JSON or ZINC.
  humanURL: https://support.75f.io/hc/en-us/articles/5459129016595-75F-External-API-s-Overview
  baseURL: https://api.75f.io/ph
  image: https://www.datocms-assets.com/55631/1643443175-75f-logo.jpg?w=1000&fit=max&fm=jpg
  tags:
  - Project Haystack
  - Building Data
  - Time Series
  - Building Automation
  properties:
  - type: Documentation
    url: https://support.75f.io/hc/en-us/sections/5484889695123-API-s-for-Integrations
  - type: APIReference
    url: https://support.75f.io/hc/en-us/articles/5460066903827-Read-API
  - type: GettingStarted
    url: https://support.75f.io/hc/en-us/articles/5509604551443-Accessing-the-API
- name: 75F Special Schedules API
  description: A v2 REST API for exception-based ("special") schedules applied at building or zone level — create, update
    and delete date-bounded occupancy overrides with mode and heating/cooling setpoints, with conflict and validation rules
    enforced server-side. OAuth 2.0 bearer token with schedules:read and schedules:write scopes.
  humanURL: https://support.75f.io/hc/en-us/articles/45325600917651-Special-Schedules-Via-API
  baseURL: https://api.75f.io/v2
  image: https://www.datocms-assets.com/55631/1643443175-75f-logo.jpg?w=1000&fit=max&fm=jpg
  tags:
  - Scheduling
  - Building Automation
  - HVAC
  properties:
  - type: APIReference
    url: https://support.75f.io/hc/en-us/articles/45325600917651-Special-Schedules-Via-API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.75f.io/
- type: DeveloperPortal
  url: https://api-management-75f-dev.developer.azure-api.net/
- type: Documentation
  url: https://support.75f.io/hc/en-us/sections/5484889695123-API-s-for-Integrations
- type: APIReference
  url: https://support.75f.io/hc/en-us/articles/5459129016595-75F-External-API-s-Overview
- type: GettingStarted
  url: https://support.75f.io/hc/en-us/articles/5509604551443-Accessing-the-API
- type: Support
  url: https://support.75f.io/hc/en-us
- type: Blog
  url: https://www.75f.io/news/
- type: SignUp
  url: https://api-management-75f-dev.developer.azure-api.net/
- type: Login
  url: https://fs.75f.io/
- type: TermsOfService
  url: https://www.datocms-assets.com/55631/1648491708-75f-terms-of-service-pdf-2022.pdf
- type: PrivacyPolicy
  url: https://www.datocms-assets.com/55631/1650987646-75f-website-privacy-notice-march-2022.pdf
- type: StatusPage
  url: https://75f.statuspage.io/
- type: ChangeLog
  url: https://support.75f.io/hc/en-us/categories/11037028410771-Feature-Release-History
- type: Compliance
  url: https://www.75f.io/software/security/
- type: Authentication
  url: authentication/75f-authentication.yml
- type: OAuthScopes
  url: scopes/75f-scopes.yml
- type: ErrorCatalog
  url: errors/75f-problem-types.yml
- type: Conventions
  url: conventions/75f-conventions.yml
- type: Lifecycle
  url: lifecycle/75f-lifecycle.yml
- type: ChangeLog
  url: changelog/75f-changelog.yml
- type: Conformance
  url: conformance/75f-conformance.yml
- type: DomainSecurity
  url: security/75f-domain-security.yml
- type: Plans
  url: plans/75f-plans-pricing.yml
- type: RateLimits
  url: rate-limits/75f-rate-limits.yml
- type: Packages
  url: packages/75f-packages.yml
- type: LLMsTxt
  url: llms/75f-llms.txt
- type: DataModel
  url: data-model/75f-data-model.yml
- type: Sandbox
  url: sandbox/75f-sandbox.yml
- type: AgentSkill
  url: skills/_index.yml
- type: X-MCPServerCandidate
  url: mcp/75f-mcp.yml
- type: TrustCenter
  url: security/75f-trust-center.yml
x-enrichment:
  date: '2026-09-05'
  status: enriched
  artifacts_added: 20
  pass: local-v3
x-coverage:
  state: covered
  reason: null
  detail: '75F documents its API thoroughly in prose but publishes no machine-readable contract: the OpenAPI 3.0 document
    behind the Facilisight API Trial and the Azure APIM developer portal is reachable only after portal registration and product-subscription
    approval, and the anonymous APIM API listing returns an empty set.'
  evidence:
  - url: https://api-management-75f-dev.developer.azure-api.net/developer/apis?api-version=2022-04-01-preview
    status: 200
  - url: https://api.75f.io/openapi.json
    status: 404
  - url: https://support.75f.io/hc/en-us/sections/5484889695123-API-s-for-Integrations
    status: 403
  checked: '2026-09-05'

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