Basecamp Card Tables API
Manage kanban-style card tables and card movements
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OpenAPI Specification
openapi: 3.2.0
info:
title: Basecamp Card Tables API
description: The Basecamp API is a REST API that provides programmatic access to Basecamp's project management and team communication platform.
version: '1.0'
contact:
name: Basecamp Developer Support
url: https://github.com/basecamp/bc3-api
termsOfService: https://basecamp.com/terms
servers:
- url: https://3.basecampapi.com/{accountId}
description: Production Server
variables:
accountId:
description: Your Basecamp account ID
default: '999999999'
security:
- bearerAuth: []
tags:
- name: Card Tables
description: Manage kanban-style card tables and card movements
paths:
/card_tables/{cardTableId}.json:
get:
operationId: getCardTable
summary: Get a card table
description: Returns the card table with the given ID, including its columns and metadata such as card counts per column.
tags:
- Card Tables
parameters:
- $ref: '#/components/parameters/CardTableId'
responses:
'200':
description: Card table details
content:
application/json:
schema:
$ref: '#/components/schemas/CardTable'
'401':
$ref: '#/components/responses/Unauthorized'
'404':
$ref: '#/components/responses/NotFound'
/card_tables/{cardTableId}/moves.json:
post:
operationId: moveCard
summary: Move a card
description: Moves a card to a different column on the card table at the specified zero-indexed position.
tags:
- Card Tables
parameters:
- $ref: '#/components/parameters/CardTableId'
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/CardMoveRequest'
responses:
'204':
description: Card moved
'400':
$ref: '#/components/responses/BadRequest'
'401':
$ref: '#/components/responses/Unauthorized'
components:
schemas:
Recording:
type: object
description: A generic recording object representing any Basecamp content resource such as a message, to-do, document, comment, or upload.
properties:
id:
type: integer
description: Recording ID
status:
type: string
description: Recording status
enum:
- active
- archived
- trashed
visible_to_clients:
type: boolean
description: Whether this recording is visible to client users
created_at:
type: string
format: date-time
description: Timestamp when the recording was created
updated_at:
type: string
format: date-time
description: Timestamp when the recording was last updated
title:
type: string
description: Title or summary of the recording
inherits_status:
type: boolean
description: Whether this recording inherits its status from a parent
type:
type: string
description: Recording type (e.g., Message, Todo, Document)
url:
type: string
format: uri
description: API URL for this recording
app_url:
type: string
format: uri
description: Web URL for this recording
bucket:
$ref: '#/components/schemas/BucketRef'
creator:
$ref: '#/components/schemas/PersonRef'
CardColumn:
type: object
description: A column within a card table
properties:
id:
type: integer
description: Column ID
title:
type: string
description: Column title
type:
type: string
description: Column type (Kanban::Column, Kanban::Triage, etc.)
color:
type: string
description: Column color
nullable: true
position:
type: integer
description: Column position within the table
cards_count:
type: integer
description: Number of cards in this column
cards_url:
type: string
format: uri
description: API URL to list cards in this column
Error:
type: object
properties:
error:
type: string
description: Human-readable error message
CardMoveRequest:
type: object
required:
- source_id
- target_id
- position
properties:
source_id:
type: integer
description: Recording ID of the card to move
target_id:
type: integer
description: Recording ID of the destination column
position:
type: integer
description: Zero-indexed position within the destination column
minimum: 0
CardTable:
allOf:
- $ref: '#/components/schemas/Recording'
- type: object
properties:
lists:
type: array
description: Columns in the card table
items:
$ref: '#/components/schemas/CardColumn'
BucketRef:
type: object
description: Reference to the project (bucket) that contains a resource
properties:
id:
type: integer
description: Project ID
name:
type: string
description: Project name
type:
type: string
description: Resource type, always "Project"
url:
type: string
format: uri
description: API URL for the project
app_url:
type: string
format: uri
description: Web URL for the project
PersonRef:
type: object
description: Minimal reference to a Basecamp person
properties:
id:
type: integer
description: Person ID
attachable_sgid:
type: string
description: Signed global ID for attaching this person
name:
type: string
description: Full name
email_address:
type: string
format: email
description: Email address
personable_type:
type: string
description: Type of personable (User, Client, etc.)
title:
type: string
description: Job title
bio:
type: string
description: Short biography
location:
type: string
description: Location string
created_at:
type: string
format: date-time
description: Account creation timestamp
updated_at:
type: string
format: date-time
description: Last update timestamp
admin:
type: boolean
description: Whether the person is an account administrator
owner:
type: boolean
description: Whether the person is the account owner
client:
type: boolean
description: Whether the person is a client user
employee:
type: boolean
description: Whether the person is an employee
time_zone:
type: string
description: IANA time zone name
avatar_url:
type: string
format: uri
description: URL to the person's avatar image
company:
type: object
description: Company the person belongs to
properties:
id:
type: integer
description: Company ID
name:
type: string
description: Company name
responses:
NotFound:
description: Not found — the requested resource does not exist
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
Unauthorized:
description: Unauthorized — missing or invalid Bearer token
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
BadRequest:
description: Bad request — missing required fields or invalid values
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
parameters:
CardTableId:
name: cardTableId
in: path
required: true
description: Unique identifier of the card table
schema:
type: integer
securitySchemes:
bearerAuth:
type: http
scheme: bearer
description: 'OAuth 2.0 Bearer token obtained via the Basecamp authorization code flow at launchpad.37signals.com. Include as "Authorization: Bearer {token}" in all requests.'
externalDocs:
description: Basecamp API Documentation
url: https://github.com/basecamp/bc3-api