composite.yaml

# This is an example configuration file that showcase the use of composite source.

# If true, a new price feed needs manual confirmation
confirm: True

# The producer name(s)
producer: $PRODUCER

# Exchange settings (Here, you may need to add API keys)
exchanges:

  # Select the maximum BTC/USD price from multiple sources.
  best_btc_price:
    klass: Composite
    aggregation_type: 'max'
    exchanges:
      worldcoinindex:
          klass: WorldCoinIndex
          api_key: $WORLDCOININDEX_API_KEY
          free_subscription: True
          quotes:
              - BTC
          bases:
              - USD
      coinmarketcap:
          klass: Coinmarketcap
          quotes:
              - BTC
          bases:
              - USD
      coindesk:
          klass: Coindesk
          quotes:
              - BTC
          bases:
              - USD

  average_fiat_price:
    klass: Composite
    aggregation_type: 'mean'
    exchanges:
      fixer:
          klass: Fixer
          api_key: $FIXER_API_KEY
          free_subscription: True
          quotes:
              - EUR
              - CNY
          bases:
              - USD
      openexchangerates:
          klass: OpenExchangeRates
          api_key: $OPENEXCHANGERATE_API_KEY
          free_subscription: True
          quotes:
              - EUR
              - CNY
          bases:
              # Only USD with free subscription
              - USD
      currencylayer:
          klass: CurrencyLayer
          api_key: $CURRENCYLAYER_API_KEY
          free_subscription: True
          quotes:
              - EUR
              - CNY
          bases:
              # Only USD with free subscription
              - USD

  huobi:
      klass: Huobi
      quotes:
          - BTS
      bases:
          - BTC

        
# default settings
default:
    # max age of a feed
    maxage: 43200

    # minimum percentage that forces a publish
    min_change: 0.5

    # warn if price change goes above this percentage
    warn_change: 1.5

    # skip publishing a feed if price goes above this percentage
    skip_change: 3

    # how to derive a single price from several sources
    # Choose from: "median", "mean", or "weighted" (by volume)
    metric: weighted

    # Select sources for this particular asset. Each source
    # has its own fetch() method and collects several markets
    # any market of an exchanges is considered but only the
    # current asset's price is derived
    #
    # Choose from: - "*": all,
    #              - loaded exchanges (see below)
    sources:
        - '*'

    # Core exchange factor for paying transaction fees in
    # non-BTS assets. Premium of 5%
    core_exchange_factor: 1.05

    # maintenance collateral ratio (percentage)
    maintenance_collateral_ratio: 175.0

    # Maximum short squeeze ratio
    maximum_short_squeeze_ratio: 110.0

    # If set to True, prices are also derived via 3
    # markets instead of just two:
    # E.g.: GOLD:USD -> USD:BTC -> BTC:BTS = GOLD:BTS
    derive_across_3markets: True


# Enabled assets that are derived if no asset is provided via command
# line
assets:
    USD:
    CNY:
        core_exchange_factor: 1.2

# Intermediate assets are useful for 2 and 3 market price derivation
# E.g.: USD:BTC -> BTC:BTS = USD:BTS
#       GOLD:USD -> USD:BTC -> BTC:BTS = GOLD:BTS
intermediate_assets:
    - CNY
    - USD
    - BTC