CVAT tasks API
Annotation tasks holding media data and annotations.
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OpenAPI Specification
openapi: 3.2.0
info:
title: CVAT REST annotations Tasks API
description: REST API for CVAT (Computer Vision Annotation Tool), an open-source platform for annotating images, video, and 3D point clouds. The same API is served by self-hosted CVAT (MIT-licensed) and by the hosted CVAT Online service at app.cvat.ai. Endpoints cover projects, tasks, jobs, annotations, labels, organizations, memberships, and cloud storage. The full machine-readable schema is published by each server at /api/schema/ and the interactive docs at /api/docs/. This document captures a representative subset of the documented surface.
termsOfService: https://www.cvat.ai/terms-of-use
contact:
name: CVAT Support
url: https://www.cvat.ai
license:
name: MIT License
url: https://en.wikipedia.org/wiki/MIT_License
version: '2.0'
servers:
- url: https://app.cvat.ai/api
description: CVAT Online (hosted)
- url: http://localhost:8080/api
description: Self-hosted CVAT (default)
security:
- tokenAuth: []
- basicAuth: []
tags:
- name: tasks
description: Annotation tasks holding media data and annotations.
paths:
/tasks:
get:
operationId: tasks_list
tags:
- tasks
summary: List tasks
parameters:
- $ref: '#/components/parameters/Page'
- $ref: '#/components/parameters/PageSize'
- name: project_id
in: query
schema:
type: integer
responses:
'200':
description: A paginated list of tasks.
content:
application/json:
schema:
$ref: '#/components/schemas/PaginatedTaskList'
post:
operationId: tasks_create
tags:
- tasks
summary: Create a task
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/TaskWriteRequest'
responses:
'201':
description: The created task.
content:
application/json:
schema:
$ref: '#/components/schemas/Task'
/tasks/{id}:
parameters:
- $ref: '#/components/parameters/PathId'
get:
operationId: tasks_retrieve
tags:
- tasks
summary: Retrieve a task
responses:
'200':
description: The requested task.
content:
application/json:
schema:
$ref: '#/components/schemas/Task'
patch:
operationId: tasks_partial_update
tags:
- tasks
summary: Update a task
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/TaskWriteRequest'
responses:
'200':
description: The updated task.
content:
application/json:
schema:
$ref: '#/components/schemas/Task'
delete:
operationId: tasks_destroy
tags:
- tasks
summary: Delete a task
responses:
'204':
description: The task has been deleted.
/tasks/{id}/data:
parameters:
- $ref: '#/components/parameters/PathId'
post:
operationId: tasks_create_data
tags:
- tasks
summary: Attach data to a task
description: Upload images, video, or references to cloud-storage objects and start the background process that prepares the task data.
requestBody:
content:
multipart/form-data:
schema:
$ref: '#/components/schemas/DataRequest'
responses:
'202':
description: Data upload accepted and queued for processing.
/tasks/{id}/dataset/export:
parameters:
- $ref: '#/components/parameters/PathId'
post:
operationId: tasks_create_dataset_export
tags:
- tasks
summary: Export a task dataset
parameters:
- name: format
in: query
required: true
schema:
type: string
- name: save_images
in: query
schema:
type: boolean
responses:
'202':
description: Export accepted; poll the returned request for the result link.
components:
schemas:
PaginatedTaskList:
$ref: '#/components/schemas/PaginatedBase'
Label:
type: object
properties:
id:
type: integer
readOnly: true
name:
type: string
color:
type: string
description: Hex color used to render the label.
type:
type: string
enum:
- any
- rectangle
- polygon
- polyline
- points
- ellipse
- cuboid
- mask
- tag
- skeleton
attributes:
type: array
items:
$ref: '#/components/schemas/Attribute'
parent_id:
type:
- integer
- 'null'
PaginatedBase:
type: object
properties:
count:
type: integer
next:
type:
- string
- 'null'
format: uri
previous:
type:
- string
- 'null'
format: uri
results:
type: array
items:
type: object
DataRequest:
type: object
properties:
client_files:
type: array
items:
type: string
format: binary
server_files:
type: array
items:
type: string
remote_files:
type: array
items:
type: string
image_quality:
type: integer
use_cache:
type: boolean
cloud_storage_id:
type: integer
Attribute:
type: object
properties:
id:
type: integer
readOnly: true
name:
type: string
mutable:
type: boolean
input_type:
type: string
enum:
- checkbox
- radio
- number
- text
- select
default_value:
type: string
values:
type: array
items:
type: string
TaskWriteRequest:
type: object
required:
- name
properties:
name:
type: string
project_id:
type:
- integer
- 'null'
labels:
type: array
items:
$ref: '#/components/schemas/Label'
segment_size:
type: integer
overlap:
type: integer
owner_id:
type:
- integer
- 'null'
assignee_id:
type:
- integer
- 'null'
Task:
type: object
properties:
id:
type: integer
readOnly: true
name:
type: string
project_id:
type:
- integer
- 'null'
mode:
type: string
description: annotation or interpolation
status:
type: string
enum:
- annotation
- validation
- completed
size:
type: integer
readOnly: true
description: Number of frames in the task.
segment_size:
type: integer
owner:
$ref: '#/components/schemas/BasicUser'
assignee:
$ref: '#/components/schemas/BasicUser'
labels:
type: array
items:
$ref: '#/components/schemas/Label'
organization:
type:
- integer
- 'null'
created_date:
type: string
format: date-time
readOnly: true
updated_date:
type: string
format: date-time
readOnly: true
BasicUser:
type:
- object
- 'null'
properties:
id:
type: integer
readOnly: true
username:
type: string
first_name:
type: string
last_name:
type: string
parameters:
Page:
name: page
in: query
schema:
type: integer
description: A page number within the paginated result set.
PageSize:
name: page_size
in: query
schema:
type: integer
description: Number of results to return per page.
PathId:
name: id
in: path
required: true
schema:
type: integer
description: A unique integer value identifying this resource.
securitySchemes:
tokenAuth:
type: apiKey
in: header
name: Authorization
description: 'Token authentication. Send the header `Authorization: Token <key>` where the key is obtained from POST /auth/login.'
basicAuth:
type: http
scheme: basic
description: HTTP Basic authentication with CVAT username and password.