create_order_params.json5

// https://docs.cloud.coinbase.com/advanced-trade-api/reference/retailbrokerageapi_postorder
//
// pyexch --method post --url https://api.coinbase.com/api/v3/brokerage/orders
//
//   Either --auth coinbase.oauth2 or --auth coinbase.v3_api will work

{
  // pyexch --call new_uuid
  "client_order_id": "cdef0123-4567-89ab-cdef-0123456789ab",

  // Order book to place the order on
  "product_id": "BTC-USD",
  
  // Generally either BUY or SELL
  "side": "BUY",
  
  // The order object
  "order_configuration": {
    
    // One of {market_market_ioc, limit_limit_gtc, limit_limit_gtd, stop_limit_stop_limit_gtc, stop_limit_stop_limit_gtd}
    "limit_limit_gtc": {
      
      // Books are named BASE-COUNTER, so this is the BTC amount your working with
      "base_size": "0.000030",
      
      // Counter currency (USD) price point to trigger on
      "limit_price": "45000",
      
      // Means to ensure this is 100% maker.  False to allow the order to split b/t maker/taker
      "post_only": true
    }
  }
}