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Implementation of the Trello API for Ruby

Ruby Trello API

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This library implements the Trello API.

Trello is an awesome tool for organization. Not just aimed at developers, but everybody. Seriously, check it out.

Full API documentation.


# gem install ruby-trello

Full Disclosure: This library is mostly complete, if you do find anything missing or not functioning as you expect it to, please let us know.

While this library still does function on ruby 1.8 as of version 1.0.2 with activemodel < 4.0, this notice services to illustrate that future versions may include ruby 1.9.3+ specific features.


Basic authorization:

  1. Get your API keys from
  2. Visit the URL [], with the following GET parameters:
    • key: the API key you got in step 1.
    • response_type: "token"
    • expiration: "never" if you don't want your token to ever expire. If you leave this blank, your generated token will expire after 30 days.
    • scope: "read,write" (optional) by default the API key will only give read access. You must set the scope to "read,write" if you would like ruby-trello to have permissions to create and delete.
    • The URL will look like this:,write
  3. You should see a page asking you to authorize your Trello application. Click "allow" and you should see a second page with a long alphanumeric string. This is your member token.
require 'trello'

Trello.configure do |config|
  config.developer_public_key = TRELLO_DEVELOPER_PUBLIC_KEY # The "key" from step 1
  config.member_token = TRELLO_MEMBER_TOKEN # The token from step 3.

2-legged OAuth authorization

Trello.configure do |config|
  config.consumer_key = TRELLO_CONSUMER_KEY
  config.consumer_secret = TRELLO_CONSUMER_SECRET
  config.oauth_token = TRELLO_OAUTH_TOKEN
  config.oauth_token_secret = TRELLO_OAUTH_TOKEN_SECRET

3-legged OAuth authorization

Trello.configure do |config|
  config.consumer_key    = TRELLO_CONSUMER_KEY
  config.consumer_secret = TRELLO_CONSUMER_SECRET
  config.return_url      = ""
  config.callback        = lambda { |request_token|, request_token.secret) }

All the calls this library make to Trello require authentication using these keys. Be sure to protect them.

So lets say you want to get information about the user bobtester. We can do something like this:

bob = Trello::Member.find("bobtester")
# Print out his name
puts bob.full_name # "Bob Tester"
# Print his bio
puts # A wonderfully delightful test user
# How about a list of his boards?

Multiple Users

Applications that make requests on behalf of multiple Trello users have an alternative to global configuration. For each user's access token/secret pair, instantiate a Trello::Client:

@client_bob =
  :consumer_key => YOUR_CONSUMER_KEY,
  :consumer_secret => YOUR_CONSUMER_SECRET,
  :oauth_token => "Bob's access token",
  :oauth_token_secret => "Bob's access secret"

@client_alice =
  :consumer_key => YOUR_CONSUMER_KEY,
  :consumer_secret => YOUR_CONSUMER_SECRET,
  :oauth_token => "Alice's access token",
  :oauth_token_secret => "Alice's access secret"

You can now make threadsafe requests as the authenticated user: do
  @client_bob.find(:members, "bobtester")
  @client_bob.find(:boards, "bobs_board_id")
end do
  @client_alice.find(:members, "alicetester")
  @client_alice.find(:boards, "alices_board_id")

Special thanks

A special thanks goes out to Ben Biddington who has contributed a significant amount of refactoring and functionality to be deserving of a beer and this special thanks.


Several ways you can contribute. Documentation, code, tests, feature requests, bug reports.

If you submit a pull request that's accepted, you'll be given commit access to this repository.

Please see the file for more information.

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