To get started check out the API Overview. Below is the documentation for each type of API call you can make. https://coinbase.com/api/doc

isup is a command line utility to check if a site is up or down. Type 'isup -h' to see the help page.

Library which allows you to check and sanitize you environment variables, raising exception if required variables are not configured, type-casting non-string variables and exposing them using an idiomatic API.

Taipo provides a simple way to check your variables are what you think they are. With an easy to use syntax you can call a single method and pass expressive type definitions.

The MessageMedia Lookups API provides a number of endpoints for validating the phone numbers you’re sending to by checking their validity, type and carrier records.

Executable to be used with NotificationExec in collectd. It will send several passive checks, from specific to general plugin-type.

A collection of diverse simple utilities without much anything to do with one another. The main rationale is to reduce the time spent on boilerplate like checking whether the arguments have the right type, or introducing some basic internationalization. More detail in the README.

a Rails gem that allows you to validate a URL entered in a form. It validates if the URL exists by hitting it with a HEAD request. The improved version includes retries for common patterns when the head request is refused before giving a failure notice. It also looks up a SITE_URL constant to the user agent in the headers. Also has the option to also check that the URL returns content of a specified type.

Create and manage configuration files in Ruby for Ruby. Jeckyl can be used to create a parameters hash from a simple config file written in Ruby, having run whatever checks you want on the file to ensure the values passed in are valid. All you need to do is define a class inheriting from Jeckyl, methods for each parameter, its default, whatever checking rules are appropriate and even a comment for generating templates etc. This is then used to parse a Ruby config file and create the parameters hash. Jeckyl comes complete with a utility to check a config file against a given class and to generate a default file for you to tailor. Type 'jeckyl readme' for more information.

The code to check for the iPhone user agent is from http://developer.apple.com. This doesn't have any dependencies. - in app/controllers/application.rb require 'is_it_iphone' class ApplicationController < ActionController::Base include IsItIPhone before_filter :adjust_format_for_iphone # Always show iPhone views end You will have these functions: iphone_user_agent? Returns true if the user agent is an iPhone. (as spec'ed on http://developer.apple.com) iphone_request? Returns true if the request came from an iPhone. Override being an iPhone with ?format=xxxx in the URL. adjust_format_for_iphone Call when you want to show iPhone views to iPhone users. Note: It is recommended by Apple that you default to showing your "normal" html page to iPhone users and allow them to choose if they want an iPhone version. With Rails 2.0, you can use its multiview capabilities by simply adding this to your app: - in config/initializers/mime_types.rb Mime::Type.register_alias "text/html", :iphone Then, just create your views using suffices of iphone.erb instead of html.erb: index.iphone.erb show.iphone.erb etc. Note: you will probably want to use a Web library specific for iPhone applications. FWIW, I use Da shcode (in the iPhone SDK) to write and debug the iPhone application and then integrate it with my Rails project.