Nexar

Nexar is a physical-AI infrastructure company that operates one of the largest real-world video driving datasets — over 1.2 billion miles of driving captured each year by more than 350,000 connected dashcams — and turns it into training data, collision-prediction models and real-time road intelligence for autonomous-vehicle, ADAS, mapping and smart-city programs. Its developer-facing surface is the CityStream™ family of REST APIs, published as four OpenAPI 3.0.1 contracts on the Nexar Developers Portal: VirtualCam (anonymized road frames), Live Feed (real-time detections), Work Zones (curated construction-zone detections, served as WZDx and GeoJSON) and Road Inventory (curated traffic-sign and road-asset detections). All four run on a single gRPC-gateway backed host and are authorized with a bearer access token minted through Nexar's Okta authorization server. Nexar also publishes the open-source BADAS collision-prediction model on PyPI and the `nap` platform CLI through its own Homebrew tap.

Nexar publishes 6 APIs on the APIs.io network, including CityStream™ Live Feed API V4 API, Get a collection of road signs API, Get a collection of work zones API, and 3 more. Tagged areas include Company, Mapping, Geospatial, Transportation, and Computer Vision.

Nexar’s developer surface includes documentation, API reference, signup flow, support, engineering blog, authentication, CLI, and 30 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.3/100 thin ▬ flat Agent 43/100 agent ready Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessApproval

4 APIs 1 MCP Servers

Company Mapping Geospatial Transportation Computer Vision Autonomous Vehicles Smart Cities ImageryRoad DataMachine Learning

Kin Score

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

Composite quality — 37.3/100 · thin

Contract Quality 9.8 / 19

Developer Ergonomics 4.2 / 15

Access Clarity 4.1 / 15

Operational Transparency 1.5 / 10

Contract Governance 0.4 / 9

Discoverability 6.0 / 8

Regulatory Posture 5.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 43/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/nexar: 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 6

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

Nexar CityStream™ Live Feed API V4 API

The CityStream™ Live Feed API V4 API from Nexar — 1 operation(s) for citystream™ live feed api v4.

Nexar Get a collection of road signs API

The Get a collection of road signs API from Nexar — 1 operation(s) for get a collection of road signs.

Nexar Get a collection of work zones API

The Get a collection of work zones API from Nexar — 1 operation(s) for get a collection of work zones.

Nexar Get a specific work zone API

The Get a specific work zone API from Nexar — 1 operation(s) for get a specific work zone.

Nexar Get the details of a specific road sign API

The Get the details of a specific road sign API from Nexar — 1 operation(s) for get the details of a specific road sign.

Nexar VirtualCam API

The VirtualCam API API from Nexar — 3 operation(s) for virtualcam api.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Nexar MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Nexar Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nexar Rate Limits

0 limits

RATE LIMITS

Security Posture 3

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

Nexar Authentication

apiKey · 1 scheme

SECURITY

Nexar Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Nexar Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Nexar Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Nexar Agentic Access

8 operations · 6 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

WellKnown

LLMsTxt

MCPServer

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

ToolCrosswalk

Packages

CLI

Access & Security 6

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

SecurityTxt

Authentication

OAuthScopes

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

Deprecation

Deprecation

RateLimits

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

Other 4

Properties that don't map to a standard resource type

Overlay

Overlay

Overlay

Overlay

Source (apis.yml)

aid: nexar
name: Nexar
description: 'Nexar is a physical-AI infrastructure company that operates one of the largest real-world video driving datasets
  — over 1.2 billion miles of driving captured each year by more than 350,000 connected dashcams — and turns it into training
  data, collision-prediction models and real-time road intelligence for autonomous-vehicle, ADAS, mapping and smart-city programs.
  Its developer-facing surface is the CityStream™ family of REST APIs, published as four OpenAPI 3.0.1 contracts on the Nexar
  Developers Portal: VirtualCam (anonymized road frames), Live Feed (real-time detections), Work Zones (curated construction-zone
  detections, served as WZDx and GeoJSON) and Road Inventory (curated traffic-sign and road-asset detections). All four run
  on a single gRPC-gateway backed host and are authorized with a bearer access token minted through Nexar''s Okta authorization
  server. Nexar also publishes the open-source BADAS collision-prediction model on PyPI and the `nap` platform CLI through
  its own Homebrew tap.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: approval
  trial: false
  try_now: false
  public: false
  label: Requires approval
  confidence: medium
  source:
  - plans
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://cdn.prod.website-files.com/6714bce7188a12cb895149f5/68f0ac403e8da1fec926cec2_social%20sharing.png
url: https://raw.githubusercontent.com/api-evangelist/nexar/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-26'
modified: '2026-08-26'
tags:
- Company
- Mapping
- Geospatial
- Transportation
- Computer Vision
- Autonomous Vehicles
- Smart Cities
- Imagery
- Road Data
- Machine Learning
tags_raw:
- Company
- Mapping
- Geospatial
- Transportation
- Computer Vision
- Autonomous Vehicles
- Smart Cities
- Imagery
- Road Data
- Machine Learning
- Computer-Vision
- Machine-Learning
apis:
- aid: nexar:nexar-citystream-live-feed-api-v4-api
  name: Nexar CityStream™ Live Feed API V4 API
  description: The CityStream™ Live Feed API V4 API from Nexar — 1 operation(s) for citystream™ live feed api v4.
  humanURL: https://developer.getnexar.com/documentation
  baseURL: https://external.getnexar.com
  tags:
  - CityStream™ Live Feed API V4
  properties:
  - type: OpenAPI
    url: openapi/nexar-citystream-live-feed-api-v4-api-openapi.yml
- aid: nexar:nexar-get-a-collection-of-road-signs-api
  name: Nexar Get a collection of road signs API
  description: The Get a collection of road signs API from Nexar — 1 operation(s) for get a collection of road signs.
  humanURL: https://developer.getnexar.com/documentation
  baseURL: https://external.getnexar.com
  tags:
  - Get a collection of road signs
  properties:
  - type: OpenAPI
    url: openapi/nexar-get-a-collection-of-road-signs-api-openapi.yml
- aid: nexar:nexar-get-a-collection-of-work-zones-api
  name: Nexar Get a collection of work zones API
  description: The Get a collection of work zones API from Nexar — 1 operation(s) for get a collection of work zones.
  humanURL: https://developer.getnexar.com/documentation
  baseURL: https://external.getnexar.com
  tags:
  - Get a collection of work zones
  properties:
  - type: OpenAPI
    url: openapi/nexar-get-a-collection-of-work-zones-api-openapi.yml
- aid: nexar:nexar-get-a-specific-work-zone-api
  name: Nexar Get a specific work zone API
  description: The Get a specific work zone API from Nexar — 1 operation(s) for get a specific work zone.
  humanURL: https://developer.getnexar.com/documentation
  baseURL: https://external.getnexar.com
  tags:
  - Get a specific work zone
  properties:
  - type: OpenAPI
    url: openapi/nexar-get-a-specific-work-zone-api-openapi.yml
- aid: nexar:nexar-get-the-details-of-a-specific-road-sign-api
  name: Nexar Get the details of a specific road sign API
  description: The Get the details of a specific road sign API from Nexar — 1 operation(s) for get the details of a specific
    road sign.
  humanURL: https://developer.getnexar.com/documentation
  baseURL: https://external.getnexar.com
  tags: []
  tags_raw:
  - Get the details of a specific road sign
  properties:
  - type: OpenAPI
    url: openapi/nexar-get-the-details-of-a-specific-road-sign-api-openapi.yml
- aid: nexar:nexar-virtualcam-api-api
  name: Nexar VirtualCam API
  description: The VirtualCam API API from Nexar — 3 operation(s) for virtualcam api.
  humanURL: https://developer.getnexar.com/documentation
  baseURL: https://external.getnexar.com
  tags:
  - VirtualCam API
  properties:
  - type: OpenAPI
    url: openapi/nexar-virtualcam-api-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/nexar-virtualcam-overlay.yaml
- type: Overlay
  url: overlays/nexar-livefeed-overlay.yaml
- type: Overlay
  url: overlays/nexar-workzones-overlay.yaml
- type: Overlay
  url: overlays/nexar-roadinventory-overlay.yaml
- type: AgenticAccess
  url: agentic-access/nexar-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/nexar-vulnerability-disclosure.yml
- type: Website
  url: https://www.nexar-ai.com/
- type: DeveloperPortal
  url: https://developer.getnexar.com/
- type: Documentation
  url: https://developer.getnexar.com/documentation
- type: APIReference
  url: https://developer.getnexar.com/documentation
- type: SignUp
  url: https://developer.getnexar.com/signup
- type: Login
  url: https://developer.getnexar.com/login
- type: Support
  url: https://help.getnexar.com/
- type: Blog
  url: https://www.nexar-ai.com/blog
- type: GitHubOrganization
  url: https://github.com/getnexar
- type: TermsOfService
  url: https://www.nexar-ai.com/legal/terms-of-service
- type: PrivacyPolicy
  url: https://www.nexar-ai.com/legal/privacy-policy
- type: Security
  url: https://www.getnexar.com/.well-known/security.txt
- type: SecurityTxt
  url: well-known/nexar-security.txt
- type: WellKnown
  url: well-known/nexar-well-known.yml
- type: LLMsTxt
  url: llms/nexar-llms.txt
- type: MCPServer
  url: mcp/nexar-mcp.yml
- type: ToolCrosswalk
  url: mcp/nexar-tool-crosswalk.yml
- type: Authentication
  url: authentication/nexar-authentication.yml
- type: OAuthScopes
  url: scopes/nexar-scopes.yml
- type: Conventions
  url: conventions/nexar-conventions.yml
- type: ErrorCatalog
  url: errors/nexar-problem-types.yml
- type: Lifecycle
  url: lifecycle/nexar-lifecycle.yml
- type: Deprecation
  url: lifecycle/nexar-lifecycle.yml
- type: Conformance
  url: conformance/nexar-conformance.yml
- type: DataModel
  url: data-model/nexar-data-model.yml
- type: Packages
  url: packages/nexar-packages.yml
- type: CLI
  url: cli/nexar-cli.yml
- type: Plans
  url: plans/nexar-plans-pricing.yml
- type: RateLimits
  url: rate-limits/nexar-rate-limits.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DomainSecurity
  url: security/nexar-domain-security.yml
x-enrichment:
  date: '2026-08-26'
  status: enriched
  artifacts_added: 36
  pass: local-v1

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