Trello Boards API is a REST API for working with Trello boards: creating, retrieving, updating and deleting boards, and managing board memberships, lists, cards, labels and other board-level resources. It suits developers and teams who want to automate kanban-style project and task workflows, sync boards with other tools, or build integrations on top of Trello, the Atlassian work-organizing application.
Important: this listing is posted by the APIs.io catalog. APIs.io does not own or sell this API. We get access from the provider, Trello.
What is published: an OpenAPI definition and documentation. The base URL is https://api.trello.com. The wider Trello REST API v1 covers 261 operations, with a first-party OpenAPI 3.0.0 definition published by Atlassian. Authorization uses an API key plus user token, or OAuth 2.0 3LO with granular scopes. Self-serve signup is available.
Provider ratings in the APIs.io catalog: Kin Score 74.1 (exemplar band) and Agent Readiness 28.7 (agent-ready band, scored 2026-11-13). The records note no MCP server, no A2A agent card, no idempotency mechanism and no rate-limit response headers.
Pricing: set by the provider. The provider's access model is described as freemium.
Condition: a live hosted API, listed in the APIs.io catalog.
Catalog listing: https://apis.io/apis/trello/trello-boards-api/ Provider: https://trello.com/