Trello

Trello is a visual collaboration and project management platform, now part of Atlassian, that organizes work into boards, lists, and cards. The developer platform provides REST APIs, webhooks, and a Power-Up framework for building integrations and extending Trello functionality.

Website: https://trello.com
API Docs: https://developer.atlassian.com/cloud/trello/rest/
Developer Portal: https://developer.atlassian.com/cloud/trello/

APIs

Trello REST API

The Trello REST API provides programmatic access to boards, lists, cards, members, labels, checklists, and other resources. Authentication uses API key and token query parameters.

• Base URL: https://api.trello.com
• Authentication: API Key + Token (query params)
• OpenAPI: openapi/trello-rest-api-openapi.yml

Trello Webhooks API

Real-time notifications when Trello models change, delivered via HTTP POST to a callback URL. Webhook requests are signed with HMAC-SHA1.

• AsyncAPI: asyncapi/trello-webhooks-asyncapi.yml

Trello Power-Ups

Framework for extending Trello boards with custom fields, buttons, badges, and third-party integrations.

• Docs: https://developer.atlassian.com/cloud/trello/power-ups/

Artifacts

Type	File
OpenAPI	openapi/trello-rest-api-openapi.yml
AsyncAPI	asyncapi/trello-webhooks-asyncapi.yml
JSON Schema (Board)	json-schema/trello-board-schema.json
JSON Schema (Card)	json-schema/trello-card-schema.json
JSON Schema (Webhook Payload)	json-schema/trello-webhook-payload-schema.json
JSON Structure (Board)	json-structure/trello-board-structure.json
JSON Structure (Card)	json-structure/trello-card-structure.json
JSON-LD Context	json-ld/trello-context.jsonld
Spectral Rules	rules/trello-spectral-rules.yml
Vocabulary	vocabulary/trello-vocabulary.yml

Capabilities

Shared Definitions

File	Description
capabilities/shared/trello-rest-api.yaml	Full Trello REST API consumed definition (boards, cards, lists, members, search, webhooks)

Workflow Capabilities

File	Description
capabilities/project-management.yaml	Unified project management capability for teams (boards, cards, lists, members, search)

Examples

• examples/trello-get-board-cards-example.json

Common Properties

• Developer Portal
• Documentation
• Privacy Policy
• Terms of Service
• Support

Maintainers

FN: Kin Lane
Email: kin@apievangelist.com

Tags

Atlassian, Boards, Cards, Collaboration, Kanban, Project Management, Task Management