Developers
Ruby

Leal Ruby SDK

Idiomatic gem, at home in a Rails app. Enrol customers, add stamps, redeem rewards and read a card's Apple Wallet and Google Wallet links, without writing a single HTTP request.

Package
leal
Registry
RubyGems
Requires
Ruby 3.3 or newer.
Licence
MIT

Install

bundle add leal

Your first call

Create a token at app.getleal.com/api_tokens, keep it in an environment variable, and hand it to the client once. Every request after that carries it for you.

require "leal"

leal = Leal::Client.new(token: ENV.fetch("LEAL_API_TOKEN"))

stores = leal.stores.list
puts stores.first.name

A token reaches every store its owner belongs to. There is no separate sandbox yet, so build against a store you do not mind changing.

Common tasks

Enrol a customer

Create the customer and put them straight onto a card. The response carries the Apple Wallet and Google Wallet links, so you can send them yourself.

customer = leal.customers.create(
  account_id: store_id,
  customer: { first_name: "Ada", email: "ada@example.com" },
  card_id: card_id
)

card = customer.customer_cards.first
puts card.apple_wallet_url, card.google_wallet_url

Add a stamp

The call most integrations need. Leal records the stamp, updates the wallet pass and sends the notification.

card = leal.customer_cards.stamp(
  account_id: store_id,
  customer_id: customer_id,
  id: customer_card_id,
  stamps: 1
)

puts "#{card.stamps_remaining} stamps to the next reward"

Redeem a reward

Spend the stamps a customer has earned. Leal checks the reward is available before recording the redemption.

leal.customer_cards.redeem(
  account_id: store_id,
  customer_id: customer_id,
  id: customer_card_id,
  reward_id: reward_id
)

Handle a failure

Failures raise typed errors you can rescue one at a time, so a rate limit does not look like a missing record.

begin
  leal.customer_cards.stamp(
    account_id: store_id, customer_id: customer_id, id: customer_card_id, stamps: 1
  )
rescue Leal::Errors::ResponseError => error
  # Wait for the seconds in the Retry-After header, then try again.
  raise unless error.code == 429
end

Every endpoint is available, not just these. The Ruby repository lists them all, and the API reference documents each field.

Rate limits and retries

Leal allows 300 requests per minute per API token. The client retries a failed request on its own, backing off between attempts, so a brief wobble does not need handling in your code. Go past the limit and you get a 429 carrying Retry-After in seconds. If you need a higher limit, ask us.

Other languages

The same API, the same methods, in eight other languages.