CVAT

CVAT (Computer Vision Annotation Tool) is an open-source platform for annotating images, video, and 3D point clouds for vision AI. The CVAT REST API exposes projects, tasks, jobs, annotations, labels, organizations, memberships, and cloud storage integrations, available both self-hosted (MIT-licensed) and as the hosted CVAT Online service at app.cvat.ai.

CVAT publishes 8 APIs on the APIs.io network, including annotations API, cloudstorages API, jobs API, and 5 more. Tagged areas include Computer-Vision, Data Annotation, Labeling, Datasets, and Open-Source.

CVAT’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.8/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Computer-Vision Data Annotation Labeling Datasets Open-Source

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 37.8/100 · thin

Contract Quality 11.6 / 23

Developer Ergonomics 5.8 / 18

Access Clarity 7.1 / 18

Operational Transparency 4.0 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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 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.

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/cvat: 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 8

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

CVAT annotations API

Shapes, tracks, and tags attached to tasks and jobs.

CVAT cloudstorages API

External object-storage connections used as data sources.

CVAT jobs API

Assignable annotation units that subdivide a task.

CVAT labels API

Label taxonomy shared across projects, tasks, and jobs.

CVAT memberships API

Membership of users within organizations.

CVAT organizations API

Organizations scoping resources for teams.

CVAT projects API

Annotation projects that group tasks and share a label set.

CVAT tasks API

Annotation tasks holding media data and annotations.

Scroll for all 8

Open Collections 10

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

CVAT REST annotations API

OPEN COLLECTION

CVAT REST annotations cloudstorages API

OPEN COLLECTION

CVAT REST annotations jobs API

OPEN COLLECTION

CVAT REST annotations labels API

OPEN COLLECTION

CVAT REST annotations memberships API

OPEN COLLECTION

CVAT REST annotations organizations API

OPEN COLLECTION

CVAT REST annotations projects API

OPEN COLLECTION

CVAT REST annotations tasks API

OPEN COLLECTION

CVAT REST API

OPEN COLLECTION

Scroll for all 10

Pricing Plans 1

Published pricing tiers and plan structures.

Cvat Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cvat Rate Limits

6 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Cvat Finops

FINOPS

Security Posture 2

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

Cvat Authentication

apiKey/http · 2 schemes

SECURITY

Cvat Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Cvat Agentic Access

36 operations · 20 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: cvat
url: https://raw.githubusercontent.com/api-evangelist/cvat/refs/heads/main/apis.yml
name: CVAT
kind: company
description: CVAT (Computer Vision Annotation Tool) is an open-source platform for annotating images, video, and 3D point
  clouds for vision AI. The CVAT REST API exposes projects, tasks, jobs, annotations, labels, organizations, memberships,
  and cloud storage integrations, available both self-hosted (MIT-licensed) and as the hosted CVAT Online service at app.cvat.ai.
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: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cvat.png
tags:
- Computer-Vision
- Data Annotation
- Labeling
- Datasets
- Open-Source
tags_raw:
- Computer Vision
- Data Annotation
- Labeling
- Datasets
- Open Source
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.23'
apis:
- aid: cvat:cvat-annotations-api
  name: CVAT annotations API
  description: Shapes, tracks, and tags attached to tasks and jobs.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - Annotations
  tags_raw:
  - annotations
  properties:
  - type: OpenAPI
    url: openapi/cvat-annotations-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
- aid: cvat:cvat-cloudstorages-api
  name: CVAT cloudstorages API
  description: External object-storage connections used as data sources.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - cloudstorages
  properties:
  - type: OpenAPI
    url: openapi/cvat-cloudstorages-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
- aid: cvat:cvat-jobs-api
  name: CVAT jobs API
  description: Assignable annotation units that subdivide a task.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - Job
  tags_raw:
  - jobs
  properties:
  - type: OpenAPI
    url: openapi/cvat-jobs-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
- aid: cvat:cvat-labels-api
  name: CVAT labels API
  description: Label taxonomy shared across projects, tasks, and jobs.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - Labels
  tags_raw:
  - labels
  properties:
  - type: OpenAPI
    url: openapi/cvat-labels-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
- aid: cvat:cvat-memberships-api
  name: CVAT memberships API
  description: Membership of users within organizations.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - Memberships
  tags_raw:
  - memberships
  properties:
  - type: OpenAPI
    url: openapi/cvat-memberships-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
- aid: cvat:cvat-organizations-api
  name: CVAT organizations API
  description: Organizations scoping resources for teams.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - Organization
  tags_raw:
  - organizations
  properties:
  - type: OpenAPI
    url: openapi/cvat-organizations-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
- aid: cvat:cvat-projects-api
  name: CVAT projects API
  description: Annotation projects that group tasks and share a label set.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - Project
  tags_raw:
  - projects
  properties:
  - type: OpenAPI
    url: openapi/cvat-projects-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
- aid: cvat:cvat-tasks-api
  name: CVAT tasks API
  description: Annotation tasks holding media data and annotations.
  humanURL: https://app.cvat.ai/api/docs/
  baseURL: https://app.cvat.ai/api
  tags:
  - Task
  tags_raw:
  - tasks
  properties:
  - type: OpenAPI
    url: openapi/cvat-tasks-api-openapi.yml
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/api/
  - type: APIReference
    url: https://app.cvat.ai/api/docs/
  - type: PostmanCollection
    url: collections/cvat.postman_collection.json
  - type: OpenCollection
    url: collections/cvat.opencollection.json
  - type: GitHub
    url: https://github.com/cvat-ai/cvat
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/tasks-api/
  - type: Documentation
    url: https://docs.cvat.ai/docs/api_sdk/sdk/reference/apis/jobs-api/
common:
- type: AgenticAccess
  url: agentic-access/cvat-agentic-access.yml
- type: DomainSecurity
  url: security/cvat-domain-security.yml
- type: Authentication
  url: authentication/cvat-authentication.yml
- type: GitHubOrganization
  url: https://github.com/cvat-ai
- type: LinkedIn
  url: https://www.linkedin.com/company/cvat-ai
- type: Website
  url: https://www.cvat.ai
- type: Documentation
  url: https://docs.cvat.ai
- type: Plans
  url: plans/cvat-plans-pricing.yml
- type: RateLimits
  url: rate-limits/cvat-rate-limits.yml
- type: FinOps
  url: finops/cvat-finops.yml
- url: https://www.cvat.ai/resources/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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