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
34.7/100 thin Agent 39/100 agent aware Full breakdown ↓
scored 2026-07-20 · rubric v0.4
1 APIs 1 MCP Servers 0 Features
CompanyEnterpriseOccupancy SensorsWorkplace AnalyticsReal TimeOccupancySensorsIoTSpace UtilizationProptech

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 34.7/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 11.7 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 39/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 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 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/density: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs

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...

MCP Servers

density-mcp.yml

MCP SERVER

Event Specifications

Density Websockets Events

ASYNCAPI

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
 MCPServer
MCPServer
 LLMsTxt
LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Lifecycle
Lifecycle
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance
 Components
Components
 Webhooks
Webhooks
 DataModel
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)

apis.yml Raw ↑ 
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
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: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- 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
  - 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: MCPServer
  url: mcp/density-mcp.yml
- 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