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'