Density

Density builds radar-based occupancy sensors and a workplace analytics platform that measures how people use physical space without cameras or personally identifiable information. Its v3 Public API (api.density.io) exposes real-time occupancy and presence, historical metrics (occupancy, utilization, time used, sessions, raw sessions), spaces / doorways / sensors / labels resources, sensor and space health, wayfinding display tokens, and WebSocket streams for live floor presence and space occupancy. Authentication is OAuth 2.0 client-credentials (Auth0-backed) or static Bearer API tokens. Originally surfaced as a portfolio company of kleiner-perkins and enriched from Density's public developer surface.

Density publishes 1 API on the APIs.io network. Tagged areas include Company, Enterprise, Occupancy Sensors, Workplace Analytics, and Real-Time.

The Density catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Density’s developer surface includes documentation, API reference, getting-started guide, support, signup flow, pricing, authentication, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.3/100 developing ▬ flat Agent 23/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-09-19 · rubric v0.22.0

AccessSelf serve

1 APIs

Company EnterpriseOccupancy SensorsWorkplace Analytics Real-Time Occupancy Sensors IoT Space Utilization PropTech

Kin Score

Kin Score How this is scored →
scored 2026-09-19 · rubric v0.22.0

Composite quality — 40.3/100 · developing

Contract Quality 10.4 / 25

Developer Ergonomics 11.0 / 20

Access Clarity 6.3 / 20

Operational Transparency 4.4 / 13

Contract Governance 0.5 / 12

Discoverability 7.6 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 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 0 / 7

Typed Event Surface 6 / 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 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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/density: 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.

Density Public API v3

Density v3 Public API for real-time occupancy and presence, historical space metrics (occupancy, utilization, time used, sessions), spaces / doorways / sensors / labels manageme...

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Density Websockets Events

ASYNCAPI

Security Posture 2

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

Density Authentication

http/oauth2 · 2 schemes

SECURITY

Density Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

ErrorCatalog

Conformance

Components

Webhooks

DataModel

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Deprecation

Deprecation

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: density
name: Density
description: Density builds radar-based occupancy sensors and a workplace analytics platform that measures how people use
  physical space without cameras or personally identifiable information. Its v3 Public API (api.density.io) exposes real-time
  occupancy and presence, historical metrics (occupancy, utilization, time used, sessions, raw sessions), spaces / doorways
  / sensors / labels resources, sensor and space health, wayfinding display tokens, and WebSocket streams for live floor presence
  and space occupancy. Authentication is OAuth 2.0 client-credentials (Auth0-backed) or static Bearer API tokens. Originally
  surfaced as a portfolio company of kleiner-perkins and enriched from Density's public developer surface.
url: https://raw.githubusercontent.com/api-evangelist/density/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/5f49c40736fbe713860f9203/681a28ab6cdef3f72543b7bd_density-favicon_256x256.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- kleiner-perkins
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Enterprise
- Occupancy Sensors
- Workplace Analytics
- Real-Time
- Occupancy
- Sensors
- IoT
- Space Utilization
- PropTech
tags_raw:
- Company
- Enterprise
- Occupancy Sensors
- Workplace Analytics
- Real Time
- Occupancy
- Sensors
- IoT
- Space Utilization
- Proptech
apis:
- name: Density Public API v3
  description: Density v3 Public API for real-time occupancy and presence, historical space metrics (occupancy, utilization,
    time used, sessions), spaces / doorways / sensors / labels management, sensor and space health, WebSocket live streams,
    and wayfinding display tokens. OAuth 2.0 client-credentials or Bearer token authentication.
  humanURL: https://developers.density.io/docs
  baseURL: https://api.density.io/v3
  tags:
  - Occupancy
  - Presence
  - Sensors
  - Space
  - Analytics
  tags_raw:
  - Occupancy
  - Presence
  - Sensors
  - Spaces
  - Analytics
  properties:
  - type: Documentation
    url: https://developers.density.io/docs
  - type: APIReference
    url: https://developers.density.io/docs
  - type: Authentication
    url: authentication/density-authentication.yml
  - type: Webhooks
    url: asyncapi/density-websockets-events.yml
  - type: ErrorCatalog
    url: errors/density-problem-types.yml
  - type: Conventions
    url: conventions/density-conventions.yml
  - type: DataModel
    url: data-model/density-data-model.yml
common:
- type: DomainSecurity
  url: security/density-domain-security.yml
- type: Website
  url: https://www.density.io
- type: DeveloperPortal
  url: https://developers.density.io/
- type: Documentation
  url: https://developers.density.io/docs
- type: APIReference
  url: https://developers.density.io/docs
- type: GettingStarted
  url: https://developers.density.io/quick_start/
- type: Support
  url: https://support.density.io/hc/en-us
- type: SignUp
  url: https://atlas.density.io/
- type: Pricing
  url: https://www.density.io/pricing
- type: TermsOfService
  url: https://www.density.io/legal/terms-of-service
- type: PrivacyPolicy
  url: https://www.density.io/legal/privacy-policy
- type: GitHubOrganization
  url: https://github.com/DensityCo
- type: StatusPage
  url: https://status.density.io
- type: Deprecation
  url: lifecycle/density-lifecycle.yml
- type: Authentication
  url: authentication/density-authentication.yml
- type: Conventions
  url: conventions/density-conventions.yml
- type: Lifecycle
  url: lifecycle/density-lifecycle.yml
- type: ErrorCatalog
  url: errors/density-problem-types.yml
- type: Conformance
  url: conformance/density-conformance.yml
- type: Packages
  url: packages/density-packages.yml
- type: Components
  url: components/density-components.yml
- type: Webhooks
  url: asyncapi/density-websockets-events.yml
- type: DataModel
  url: data-model/density-data-model.yml
- type: WellKnown
  url: well-known/density-well-known.yml
- type: X-MCPServerCandidate
  url: mcp/density-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/density-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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