Trello

Trello is a web-based, kanban-style, list-making application from Atlassian that lets teams organize tasks, projects and workflows as boards, lists and cards. Its public REST API v1 at https://api.trello.com/1 exposes 261 operations across boards, lists, cards, checklists, labels, custom fields, attachments, members, workspaces, enterprises, actions, notifications, search, webhooks, tokens and Power-Up plugins, with a first-party OpenAPI 3.0.0 definition published by Atlassian. Authorization is an API key plus user token, or OAuth 2.0 3LO with ten granular scopes, generally available since 15 September 2026. Trello also ships a webhook surface signed with HMAC-SHA1, a browser client library (client.js), and the Power-Ups framework for extending the Trello board UI. The platform publishes no MCP server and no A2A agent card, no idempotency mechanism and no rate-limit response headers.

Trello publishes 20 API contracts indexed on the APIs.io network, including Webhooks API, Actions API, Boards API, and 17 more. Tagged areas include Project Management, Kanban, Task Management, Collaboration, and Productivity.

The Trello catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.

Trello’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 47 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

75.6/100 exemplar ▬ flat Agent 29/100 agent ready Front door AI 3/6 light Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

2 published contracts 4 Agent Skills 16 Features

Project Management Kanban Task Management Collaboration Productivity Workflows Boards Atlassian

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Project & Portfolio Management

BC-900

BoardsCardsChecklistsLists

POST /cards POST /cards/{id}/checklists POST /boards GET /boards/{id}

Developer Platform & API Ecosystem Management

BC-4270

PluginsWebhooks

GET /plugins/{id} POST /plugins/{id}/listings GET /plugins/{id}/ GET /plugins/{id}/compliance/memberPrivacy

What people ask Trello 18

The questions people put to an LLM, and the jobs they hand an agent, that Trello's APIs answer — each one linked to the operation that does it. Generated by API Evangelist

trello Cards API Create a card on a list “How do I add a new card to a list on my Trello board?” Get a card's details “How can I fetch everything about a single card, including its checklists and attachments?” Update a card's fields “How do I rename a card or change its description after it exists?” Permanently delete a card “How do I permanently delete a card rather than archive it?”

trello Members API Look up a Trello member profile “How do I look up a Trello user's profile by their username?” Update a member's profile name, initials or bio “How do I change my full name on my Trello profile through the API?” List the boards a member can access “Which boards does a given Trello user have access to?” List the cards assigned to a member “What cards is a particular person assigned to across all boards?”

trello Boards API Create a board “How do I create a new Trello board with a name and description?” Get a board's details “How do I fetch a board along with its lists, cards and labels in one call?” Update a board's settings “How do I rename a board or change its description?” Permanently delete a board “How do I permanently delete a board?”

trello Organizations API Create a new Workspace “How do I create a new Trello Workspace from code?” Get a Workspace's details “How do I look up a Workspace by its id or short name?” Update a Workspace's name, description or website “Can I rename a Workspace or change its URL short name?” Permanently delete a Workspace “What happens to the boards when I delete a Workspace?”

Trello Enterprises API Get an Enterprise's details “How do I fetch the details of our Trello Enterprise account?” Get an Enterprise's audit log “Where can I pull the audit log of admin actions in our Enterprise?” List an Enterprise's admins “Who are the admins of our Enterprise?” Get an Enterprise's signup URL “How do I get the link people use to sign up to our Enterprise?”

trello Actions API Get an activity event “How do I look up a single Trello action, like a comment or card move, by its id?” Edit the text of a comment action “How do I edit a comment when I only have the action id?” Delete a comment action “How do I delete a comment using its action id?” Get one field of an action “Can I read just the date or type of an action without the rest?”

trello Checklists API Add a checklist to a card “How do I add a checklist to a Trello card?” Get a checklist with its items “How do I fetch a whole checklist including its check items?” Rename or reorder a checklist “Can I rename a checklist on a card?” Delete a checklist “How do I delete an entire checklist from a card?”

trello Notifications API List a member's notifications “How do I list a person's Trello notifications?” Get a single notification “How do I fetch one notification by its id?” Update a notification's unread flag “Can I update a notification object to flip whether it is unread?” Mark all my notifications as read “How do I clear all my Trello notifications at once?”

trello Lists API Create a list on a board “How do I create a new list on a board by passing the board id?” Get a list's details “How do I look up one list by its id?” Update a list's name, position or status “How do I change several things about a list at once, like its name and position?” List activity on a list “What has happened on a list recently?”

Trello Custom Fields API Create a custom field on a board “How do I add a new custom field, like a dropdown or number, to a board?” Get a custom field definition “How do I look up a custom field's type and name?” Rename or reposition a custom field “Can I rename a custom field after it's been created?” Delete a custom field and its values “What happens to card values when I delete a custom field?”

trello Tokens API Inspect an API token “How do I check what permissions and expiry an API token has?” Revoke an API token and its webhooks “How do I revoke a Trello API token?” List webhooks created by a token “Which webhooks has my token registered?” Create a webhook under a token “How do I get notified when a board or card changes?”

trello Plugins API Get a Power-Up “How do I look up my Power-Up's details by its id?” Update a Power-Up “How do I update my Power-Up's information?” Create a marketplace listing for a Power-Up “How do I publish a marketplace listing for my Power-Up?” Get a Power-Up (trailing-slash endpoint) “Is there a trailing-slash plugins path variant for fetching a plugin?”

Showing 12 of 18 APIs with phrasing — see every API.

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 75.6/100 · exemplar

Contract Quality 13.0 / 19

Developer Ergonomics 9.9 / 15

Access Clarity 12.6 / 15

Operational Transparency 9.5 / 10

Contract Governance 4.1 / 9

Discoverability 5.0 / 8

Regulatory Posture 6.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 69.4 — up to +7.7 composite points
Developer Ergonomics scores 66.1 — up to +6.8 composite points
Contract Governance scores 45.5 — up to +6.5 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/trello/apis.yml: open an issue on github.com/api-evangelist/trello to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Workplace Collaboration App Marketplaces	mixed	33.0	-	-
Raycast Store Extensions (first-party publishers + community-wrapped products)	mixed	33.0	-	-
Obsidian Community Plugins (third-party APIs the Obsidian plugin ecosystem integrates)	mixed	33.0	-	-
APIs.guru OpenAPI Directory (API definition directory)	mixed	33.0	-	-
IFTTT Services (service publishers)	mixed	33.0	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

AsyncAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 20

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

Trello Webhooks API

The Trello Webhooks API allows developers to receive real-time notifications when changes occur on Trello models such as boards, lists, and cards. Rather than polling the REST A...

Trello Power-Ups

Trello Power-Ups are a framework for extending and integrating with the Trello platform. Power-Ups allow developers to add custom functionality to Trello boards, including custo...

trello Actions API

Operations for retrieving and managing actions, which represent activity events that occur on Trello objects such as boards, lists, and cards.

trello Boards API

Operations for creating, retrieving, updating, and deleting boards, as well as managing board memberships, lists, cards, labels, and other board-level resources.

trello Cards API

Operations for creating, retrieving, updating, and deleting cards, including managing card attachments, checklists, comments, labels, members, and stickers.

trello Checklists API

Operations for creating, retrieving, updating, and deleting checklists and their check items on cards.

trello Labels API

Operations for creating, retrieving, updating, and deleting labels on boards and cards.

trello Lists API

Operations for creating, retrieving, updating, and archiving lists on boards.

trello Members API

Operations for retrieving and updating member profiles, boards, organizations, and notification settings.

trello Notifications API

Operations for retrieving and managing member notifications about activity on boards, cards, and other Trello objects.

trello Organizations API

Operations for creating, retrieving, updating, and deleting Trello workspaces (organizations), including managing workspace members and settings.

trello Plugins API

Operations for managing Power-Up plugins, including listing, updating, and creating plugin marketplace listings.

trello Search API

Operations for searching across Trello boards, cards, members, and organizations using query strings.

trello Tokens API

Operations for retrieving and deleting API tokens and their associated webhooks.

trello Webhooks API

Operations for creating, retrieving, updating, and deleting webhooks that deliver real-time notifications when Trello models change.

Trello Applications API

The Applications API from Trello — 1 operation(s) for applications.

Trello Batch API

The Batch API from Trello — 1 operation(s) for batch.

Trello Emoji API

The Emoji API from Trello — 1 operation(s) for emoji.

Trello Enterprises API

The Enterprises API from Trello — 19 operation(s) for enterprises.

Trello Custom Fields API

Operations for creating, retrieving, updating, and deleting custom field definitions and their values on boards and cards.

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Open Collections 15

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

Trello REST Actions API

OPEN COLLECTION

Trello REST Actions Boards API

OPEN COLLECTION

Trello REST Actions Cards API

OPEN COLLECTION

Trello REST Actions Checklists API

OPEN COLLECTION

Trello REST Actions CustomFields API

OPEN COLLECTION

Trello REST Actions Labels API

OPEN COLLECTION

Trello REST Actions Lists API

OPEN COLLECTION

Trello REST Actions Members API

OPEN COLLECTION

Trello REST Actions Notifications API

OPEN COLLECTION

Trello REST Actions Organizations API

OPEN COLLECTION

Trello REST Actions Plugins API

OPEN COLLECTION

Trello REST API

OPEN COLLECTION

Trello REST Actions Search API

OPEN COLLECTION

Trello REST Actions Tokens API

OPEN COLLECTION

Trello REST Actions Webhooks API

OPEN COLLECTION

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Agent Skills 4

Packaged agent skills for driving this provider's APIs from an AI assistant.

trello-archive-and-restore

AGENT SKILL

trello-provision-board

AGENT SKILL

trello-subscribe-webhooks

AGENT SKILL

trello-triage-card

AGENT SKILL

Trello API pricing

Prices published by Trello, read 2026-10-28 from trello.com/pricing.

Plan	Price
Free	$0 USD per user Includes: Free for up to 10 collaborators per Workspace; Unlimited cards; Up to 10 boards per Workspace; 250 W
Standard	$5 USD Includes: Everything in Free, plus unlimited boards, AI, 1,000 Workspace command runs per month, unlimited sto
Premium	$10 USD Includes: Everything in Standard, plus views, admin and security features, unlimited Workspace command runs
Enterprise	$17.50 USD Includes: Everything in Premium, plus unlimited Workspaces, Atlassian Guard Standard, 24/7 Enterprise Admin su

Plan details, limits and sources →

Rate limits

Per API key: 300 requests per 10s
Per token: 100 requests per 10s
/1/members route: 100 requests per 900s

All 5 limits →

Billed by: user · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Trello Plans Pricing

4 plans

PLANS

Trello Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Trello Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Trello

SLA

FinOps 1

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

Trello Finops

FINOPS

Features 16

Notable capabilities this provider offers.

Free: up to 10 boards per workspace, unlimited cards

Standard at $5/user/mo: unlimited boards, AI quick capture, custom fields

Premium at $10/user/mo: AI, multiple views (Timeline/Calendar/Table)

Enterprise at $17.50/user/mo: org-wide permissions, SSO via Atlassian Guard

REST API at api.trello.com/1

Per API key: 300 req/10s

Per token: 100 req/10s

Search: 50 req/min

Webhook deliveries: 600 events/min

Power-Ups for board extensions

Butler automation (rules, buttons, scheduled commands)

Card mirroring (Standard+)

OAuth 1.0a + API key/token

Webhooks for board, list, card, member events

Atlassian-owned (Confluence/Jira ecosystem)

iOS, Android, desktop apps

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Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Trello Webhooks Events

The Trello Webhooks API delivers real-time notifications when changes occur on Trello models such as boards, lists, cards, and members. Rather than polling the REST API for upda...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Trello Context

0 classes · 13 properties

JSON-LD

Spectral Rules 3

Spectral governance rulesets for linting and validating these APIs.

Trello — asyncapi rules

8 rules · 1 errors 7 warnings

SPECTRAL

Trello — jsonschema rules

6 rules · 4 warnings 2 info

SPECTRAL

Trello API Rules

20 rules · 4 errors 14 warnings 2 info

SPECTRAL

OpenAPI Overlays 19

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Trello Actions Api Phrasing Overlay

19 actions · phrasing · trello-actions-api-openapi.yml

GENERATED

Trello Applications Api Phrasing Overlay

2 actions · phrasing · trello-applications-api-openapi.yml

GENERATED

Trello Batch Api Phrasing Overlay

2 actions · phrasing · trello-batch-api-openapi.yml

GENERATED

Trello Boards Api Phrasing Overlay

44 actions · phrasing · trello-boards-api-openapi.yml

GENERATED

Trello Cards Api Phrasing Overlay

46 actions · phrasing · trello-cards-api-openapi.yml

GENERATED

Trello Checklists Api Phrasing Overlay

13 actions · phrasing · trello-checklists-api-openapi.yml

GENERATED

Trello Custom Fields Api Phrasing Overlay

11 actions · phrasing · trello-custom-fields-api-openapi.yml

GENERATED

Trello Emoji Api Phrasing Overlay

2 actions · phrasing · trello-emoji-api-openapi.yml

GENERATED

Trello Enterprises Api Phrasing Overlay

22 actions · phrasing · trello-enterprises-api-openapi.yml

GENERATED

Trello Labels Api Phrasing Overlay

6 actions · phrasing · trello-labels-api-openapi.yml

GENERATED

Trello Lists Api Phrasing Overlay

12 actions · phrasing · trello-lists-api-openapi.yml

GENERATED

Trello Members Api Phrasing Overlay

46 actions · phrasing · trello-members-api-openapi.yml

GENERATED

Trello Notifications Api Phrasing Overlay

13 actions · phrasing · trello-notifications-api-openapi.yml

GENERATED

Trello Organizations Api Phrasing Overlay

27 actions · phrasing · trello-organizations-api-openapi.yml

GENERATED

Trello Plugins Api Phrasing Overlay

9 actions · phrasing · trello-plugins-api-openapi.yml

GENERATED

Trello Rest Api Overlay

30 actions · documentation · trello-rest-api-openapi.json

DERIVED

Trello Search Api Phrasing Overlay

4 actions · phrasing · trello-search-api-openapi.yml

GENERATED

Trello Tokens Api Phrasing Overlay

10 actions · phrasing · trello-tokens-api-openapi.yml

GENERATED

Trello Webhooks Api Phrasing Overlay

7 actions · phrasing · trello-webhooks-api-openapi.yml

GENERATED

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JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Trello Board

17 properties

JSON SCHEMA

Trello Card

24 properties

JSON SCHEMA

Trello Webhook Payload

2 properties

JSON SCHEMA

JSON Structure 2

JSON Structure definitions describing this provider's data shapes.

Trello Board Structure

0 properties

JSON STRUCTURE

Trello Card Structure

0 properties

JSON STRUCTURE

Security Posture 4

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

Trello Authentication

apiKey/oauth2 · 3 schemes

SECURITY

Trello Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Trello Vulnerability Disclosure

security.txt · contact published

SECURITY

Trello Trust Center

FedRAMP

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Trello Scopes

10 scopes · authorizationCode

10 scopes

SCOPES

Agentic Access 1

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

Trello Agentic Access

362 operations · 185 acting · 1 human-in-the-loop

362 operations · 185 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 6

Reference material describing how the API behaves

Documentation

APIReference

AsyncAPI

JSONSchema

JSONSchema

JSONSchema

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

WellKnown

AgentSkill

LLMsTxt

AgenticAccess

Design & Contract 12

Pagination, idempotency, versioning, errors, and events

Components

Conformance

Lifecycle

Conventions

ErrorCatalog

DataModel

Webhooks

JSONLD

JSONStructure

JSONStructure

SpectralRules

Vocabulary

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Build 4

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

Examples

Examples

GitHubOrganization

GitHubOrganization

Access & Security 8

Authentication, authorization, and security posture

SecurityTxt

Security

Compliance

OAuthScopes

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Scroll for all 8

Operate 7

Status, limits, changes, and where to get help

Support

Community

Roadmap

RateLimits

StatusPage

Deprecation

ChangeLog

Scroll for all 7

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

FinOps

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

name: Trello
aid: trello
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
specificationVersion: '0.23'
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/trello.png
url: https://raw.githubusercontent.com/api-evangelist/trello/refs/heads/main/apis.yml
modified: '2026-09-17'
apis:
- aid: trello:webhooks-api
  name: Trello Webhooks API
  tags:
  - Event
  - Notification
  - Real-Time
  - Webhook
  tags_raw:
  - Events
  - Notifications
  - Real-Time
  - Webhooks
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.trello.com
  humanURL: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
  properties:
  - url: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
    type: Documentation
  - url: asyncapi/trello-webhooks-asyncapi.yml
    type: AsyncAPI
  description: The Trello Webhooks API allows developers to receive real-time notifications when changes occur on Trello models
    such as boards, lists, and cards. Rather than polling the REST API for updates, webhooks push event data to a specified
    callback URL via HTTP POST requests containing JSON payloads. Webhook requests are signed with HMAC-SHA1 for verification,
    and webhooks are scoped to the permissions of the token used to create them.
- aid: trello:power-ups
  name: Trello Power-Ups
  tags:
  - Customization
  - Extensions
  - Integration
  - Plugins
  tags_raw:
  - Customization
  - Extensions
  - Integrations
  - Plugins
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.trello.com
  humanURL: https://developer.atlassian.com/cloud/trello/power-ups/
  properties:
  - url: https://developer.atlassian.com/cloud/trello/power-ups/
    type: Documentation
  - url: https://developer.atlassian.com/cloud/trello/power-ups/client-library/
    type: APIReference
    name: Power-Up client library reference
  - url: components/trello-components.yml
    type: Components
  description: Trello Power-Ups are a framework for extending and integrating with the Trello platform. Power-Ups allow developers
    to add custom functionality to Trello boards, including custom fields, board buttons, card buttons, card badges, and card
    detail sections. The Power-Up framework provides a client library with utilities and helpers for interacting with the
    Trello interface, managing authorization, and accessing the REST API from within the Power-Up context.
- aid: trello:trello-actions-api
  name: trello Actions API
  description: Operations for retrieving and managing actions, which represent activity events that occur on Trello objects
    such as boards, lists, and cards.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Actions
  properties:
  - type: OpenAPI
    url: openapi/trello-actions-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-boards-api
  name: trello Boards API
  description: Operations for creating, retrieving, updating, and deleting boards, as well as managing board memberships,
    lists, cards, labels, and other board-level resources.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Boards
  properties:
  - type: OpenAPI
    url: openapi/trello-boards-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-cards-api
  name: trello Cards API
  description: Operations for creating, retrieving, updating, and deleting cards, including managing card attachments, checklists,
    comments, labels, members, and stickers.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Cards
  properties:
  - type: OpenAPI
    url: openapi/trello-cards-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-checklists-api
  name: trello Checklists API
  description: Operations for creating, retrieving, updating, and deleting checklists and their check items on cards.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Checklists
  properties:
  - type: OpenAPI
    url: openapi/trello-checklists-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-labels-api
  name: trello Labels API
  description: Operations for creating, retrieving, updating, and deleting labels on boards and cards.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Labels
  properties:
  - type: OpenAPI
    url: openapi/trello-labels-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-lists-api
  name: trello Lists API
  description: Operations for creating, retrieving, updating, and archiving lists on boards.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - List
  tags_raw:
  - Lists
  properties:
  - type: OpenAPI
    url: openapi/trello-lists-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-members-api
  name: trello Members API
  description: Operations for retrieving and updating member profiles, boards, organizations, and notification settings.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Members
  properties:
  - type: OpenAPI
    url: openapi/trello-members-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-notifications-api
  name: trello Notifications API
  description: Operations for retrieving and managing member notifications about activity on boards, cards, and other Trello
    objects.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Notification
  tags_raw:
  - Notifications
  properties:
  - type: OpenAPI
    url: openapi/trello-notifications-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-organizations-api
  name: trello Organizations API
  description: Operations for creating, retrieving, updating, and deleting Trello workspaces (organizations), including managing
    workspace members and settings.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Organization
  tags_raw:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/trello-organizations-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-plugins-api
  name: trello Plugins API
  description: Operations for managing Power-Up plugins, including listing, updating, and creating plugin marketplace listings.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Plugins
  properties:
  - type: OpenAPI
    url: openapi/trello-plugins-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-search-api
  name: trello Search API
  description: Operations for searching across Trello boards, cards, members, and organizations using query strings.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/trello-search-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-tokens-api
  name: trello Tokens API
  description: Operations for retrieving and deleting API tokens and their associated webhooks.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/trello-tokens-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-webhooks-api
  name: trello Webhooks API
  description: Operations for creating, retrieving, updating, and deleting webhooks that deliver real-time notifications when
    Trello models change.
  humanURL: https://developer.atlassian.com/cloud/trello/rest/
  baseURL: https://api.trello.com
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/trello-webhooks-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
- aid: trello:trello-applications-api
  name: Trello Applications API
  description: The Applications API from Trello — 1 operation(s) for applications.
  humanURL: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
  baseURL: https://api.trello.com
  tags:
  - Application
  tags_raw:
  - Applications
  properties:
  - type: OpenAPI
    url: openapi/trello-applications-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: APIReference
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: GettingStarted
    url: https://developer.atlassian.com/cloud/trello/guides/rest-api/api-introduction/
  - type: DataModel
    url: data-model/trello-data-model.yml
  - type: ErrorCatalog
    url: errors/trello-problem-types.yml
  - type: Conventions
    url: conventions/trello-conventions.yml
- aid: trello:trello-batch-api
  name: Trello Batch API
  description: The Batch API from Trello — 1 operation(s) for batch.
  humanURL: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
  baseURL: https://api.trello.com
  tags:
  - Batch
  properties:
  - type: OpenAPI
    url: openapi/trello-batch-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: APIReference
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: GettingStarted
    url: https://developer.atlassian.com/cloud/trello/guides/rest-api/api-introduction/
  - type: DataModel
    url: data-model/trello-data-model.yml
  - type: ErrorCatalog
    url: errors/trello-problem-types.yml
  - type: Conventions
    url: conventions/trello-conventions.yml
- aid: trello:trello-emoji-api
  name: Trello Emoji API
  description: The Emoji API from Trello — 1 operation(s) for emoji.
  humanURL: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
  baseURL: https://api.trello.com
  tags:
  - Emoji
  properties:
  - type: OpenAPI
    url: openapi/trello-emoji-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: APIReference
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: GettingStarted
    url: https://developer.atlassian.com/cloud/trello/guides/rest-api/api-introduction/
  - type: DataModel
    url: data-model/trello-data-model.yml
  - type: ErrorCatalog
    url: errors/trello-problem-types.yml
  - type: Conventions
    url: conventions/trello-conventions.yml
- aid: trello:trello-enterprises-api
  name: Trello Enterprises API
  description: The Enterprises API from Trello — 19 operation(s) for enterprises.
  humanURL: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
  baseURL: https://api.trello.com
  tags:
  - Enterprises
  properties:
  - type: OpenAPI
    url: openapi/trello-enterprises-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: APIReference
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: GettingStarted
    url: https://developer.atlassian.com/cloud/trello/guides/rest-api/api-introduction/
  - type: DataModel
    url: data-model/trello-data-model.yml
  - type: ErrorCatalog
    url: errors/trello-problem-types.yml
  - type: Conventions
    url: conventions/trello-conventions.yml
- aid: trello:trello-custom-fields-api
  name: Trello Custom Fields API
  description: Operations for creating, retrieving, updating, and deleting custom field definitions and their values on boards
    and cards.
  humanURL: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
  baseURL: https://api.trello.com
  tags:
  - Custom Fields
  properties:
  - type: OpenAPI
    url: openapi/trello-custom-fields-api-openapi.yml
  - type: Documentation
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: APIReference
    url: https://developer.atlassian.com/cloud/trello/rest/
  - type: GettingStarted
    url: https://developer.atlassian.com/cloud/trello/guides/rest-api/api-introduction/
  - type: DataModel
    url: data-model/trello-data-model.yml
  - type: ErrorCatalog
    url: errors/trello-problem-types.yml
  - type: Conventions
    url: conventions/trello-conventions.yml
common:
- type: CapabilityMap
  url: capabilities/trello-capability-edges.yml
  name: Trello Business Capability Map
- type: Website
  url: https://trello.com/
- type: DeveloperPortal
  url: https://developer.atlassian.com/cloud/trello/
- type: Documentation
  url: https://developer.atlassian.com/cloud/trello/rest/
- type: APIReference
  url: https://developer.atlassian.com/cloud/trello/rest/
- type: GettingStarted
  url: https://developer.atlassian.com/cloud/trello/guides/rest-api/api-introduction/
- type: Support
  url: https://support.atlassian.com/trello/
- type: Community
  url: https://community.developer.atlassian.com/c/trello/
- type: Blog
  url: https://www.atlassian.com/blog/trello
- type: Roadmap
  url: https://www.atlassian.com/roadmap/cloud?products=trello
- type: Pricing
  url: https://trello.com/pricing
- type: SignUp
  url: https://trello.com/signup
- type: TermsOfService
  url: https://www.atlassian.com/legal/cloud-terms-of-service
- type: PrivacyPolicy
  url: https://www.atlassian.com/legal/privacy-policy
- type: Plans
  url: plans/trello-plans-pricing.yml
- type: RateLimits
  url: rate-limits/trello-rate-limits.yml
- type: FinOps
  url: finops/trello-finops.yml
- type: Packages
  url: packages/trello-packages.yml
- type: SDKs
  url: packages/trello-packages.yml
- type: Components
  url: components/trello-components.yml
- type: WellKnown
  url: well-known/trello-well-known.yml
- type: SecurityTxt
  url: well-known/trello-security.txt
- type: Security
  url: security/trello-vulnerability-disclosure.yml
- type: Compliance
  url: conformance/trello-conformance.yml
- type: Conformance
  url: conformance/trello-conformance.yml
- type: Lifecycle
  url: lifecycle/trello-lifecycle.yml
- type: StatusPage
  url: https://trello.status.atlassian.com/
- type: Deprecation
  url: lifecycle/trello-lifecycle.yml
- type: ChangeLog
  url: changelog/trello-changelog.yml
- type: Conventions
  url: conventions/trello-conventions.yml
- type: ErrorCatalog
  url: errors/trello-problem-types.yml
- type: DataModel
  url: data-model/trello-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/trello-llms.txt
- type: Overlay
  url: overlays/trello-rest-api-overlay.yaml
- type: AsyncAPI
  url: asyncapi/trello-webhooks-asyncapi.yml
- type: Webhooks
  url: https://developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/
- type: Examples
  url: examples/trello-get-board-cards-example.json
- type: OAuthScopes
  url: scopes/trello-scopes.yml
- type: AgenticAccess
  url: agentic-access/trello-agentic-access.yml
- type: TrustCenter
  url: security/trello-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/trello-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/trello-domain-security.yml
- type: Authentication
  url: authentication/trello-authentication.yml
- type: GitHubOrganization
  url: https://github.com/trello
- type: LinkedIn
  url: https://www.linkedin.com/company/atlassian
- type: JSONLD
  url: json-ld/trello-context.jsonld
- type: JSONSchema
  url: json-schema/trello-board-schema.json
- type: JSONSchema
  url: json-schema/trello-card-schema.json
- type: JSONSchema
  url: json-schema/trello-webhook-payload-schema.json
- type: JSONStructure
  url: json-structure/trello-board-structure.json
- type: JSONStructure
  url: json-structure/trello-card-structure.json
- type: SpectralRules
  url: rules/trello-spectral-rules.yml
- type: Vocabulary
  url: vocabulary/trello-vocabulary.yml
- type: Features
  data:
  - 'Free: up to 10 boards per workspace, unlimited cards'
  - 'Standard at $5/user/mo: unlimited boards, AI quick capture, custom fields'
  - 'Premium at $10/user/mo: AI, multiple views (Timeline/Calendar/Table)'
  - 'Enterprise at $17.50/user/mo: org-wide permissions, SSO via Atlassian Guard'
  - REST API at api.trello.com/1
  - 'Per API key: 300 req/10s'
  - 'Per token: 100 req/10s'
  - 'Search: 50 req/min'
  - 'Webhook deliveries: 600 events/min'
  - Power-Ups for board extensions
  - Butler automation (rules, buttons, scheduled commands)
  - Card mirroring (Standard+)
  - OAuth 1.0a + API key/token
  - Webhooks for board, list, card, member events
  - Atlassian-owned (Confluence/Jira ecosystem)
  - iOS, Android, desktop apps
  sources:
  - https://trello.com/pricing
  updated: '2026-05-04'
description: Trello is a web-based, kanban-style, list-making application from Atlassian that lets teams organize tasks, projects
  and workflows as boards, lists and cards. Its public REST API v1 at https://api.trello.com/1 exposes 261 operations across
  boards, lists, cards, checklists, labels, custom fields, attachments, members, workspaces, enterprises, actions, notifications,
  search, webhooks, tokens and Power-Up plugins, with a first-party OpenAPI 3.0.0 definition published by Atlassian. Authorization
  is an API key plus user token, or OAuth 2.0 3LO with ten granular scopes, generally available since 15 September 2026. Trello
  also ships a webhook surface signed with HMAC-SHA1, a browser client library (client.js), and the Power-Ups framework for
  extending the Trello board UI. The platform publishes no MCP server and no A2A agent card, no idempotency mechanism and
  no rate-limit response headers.
created: '2026-05-03'
tags:
- Project Management
- Kanban
- Task Management
- Collaboration
- Productivity
- Workflows
- Boards
- Atlassian
tags_raw:
- Project Management
- Kanban
- Task Management
- Collaboration
- Productivity
- Workflow
- Boards
- Atlassian
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com
x-enrichment:
  date: '2026-09-17'
  status: enriched
  artifacts_added: 21
  pass: local-v3

Trello API — frequently asked questions

Does Trello have an API?

Yes. APIs.io lists 20 APIs from Trello, including Trello Webhooks API, Trello Power-Ups and trello Actions API, and 17 more.

Is there an OpenAPI specification for the Trello API?

Yes. APIs.io indexes 18 OpenAPI specifications for Trello, each linked for download from this page.

How do I authenticate with the Trello API?

Trello uses bearer-token authentication (apiKey/oauth2 · 3 schemes). The details are profiled on APIs.io as Trello Authentication.

How much does the Trello API cost?

Trello publishes its prices; its Free plan is $0 USD per user as of 2026-10-28. APIs.io lists 4 pricing plans for Trello, with each plan's price, limits and inclusions under Pricing on this page.

Is the Trello API ready for AI agents?

Trello has a Kin Score of 75.6 out of 100 (exemplar) and an Agent Readiness score of 28.7 (agent-ready), scored by API Evangelist on 2026-11-06.

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