diff --git a/athena_abi/core.go b/athena_abi/core.go
new file mode 100644
index 00000000..3151afca
--- /dev/null
+++ b/athena_abi/core.go
@@ -0,0 +1,160 @@
+package athena_abi
+
+import (
+	"errors"
+	"log"
+)
+
+type StarknetABI struct {
+	ABIName               *string
+	ClassHash             []byte
+	Functions             map[string]AbiFunction
+	Events                map[string]AbiEvent
+	Constructor           []AbiParameter
+	L1Handler             *AbiFunction
+	ImplementedInterfaces map[string]AbiInterface
+}
+
+// Declare errors
+var (
+	errParseDefinedTypes          = errors.New("unable to parse defined types")
+	errParseInterfaces            = errors.New("unable to parse interfaces")
+	errParseFunctions             = errors.New("unable to parse functions")
+	errParseEvents                = errors.New("unable to parse events")
+	errParseConstructor           = errors.New("unable to parse constructor")
+	errParseL1Handler             = errors.New("unable to parse L1 handler")
+	errParseImplementedInterfaces = errors.New("unable to parse implemented interfaces")
+)
+
+// Parse Starknet ABI from JSON
+// @param abiJSON
+// @param abiname
+// @param classHash
+func StarknetAbiFromJSON(abiJson []map[string]interface{}, abiName string, classHash []byte) (*StarknetABI, error) {
+	groupedAbi := GroupAbiByType(abiJson)
+
+	// Parse defined types (structs and enums)
+	definedTypes, err := ParseEnumsAndStructs(groupedAbi["type_def"])
+	if err != nil {
+		sortedDefs, errDef := TopoSortTypeDefs(groupedAbi["type_def"])
+		if errDef == nil {
+			defineTypes, errDtypes := ParseEnumsAndStructs(sortedDefs)
+			definedTypes = defineTypes
+			errDef = errDtypes
+		}
+		if errDef != nil {
+			return nil, errParseDefinedTypes
+		}
+		log.Println("ABI Struct and Enum definitions out of order & required topological sorting")
+	}
+
+	// Parse interfaces
+	var definedInterfaces []AbiInterface
+	for _, iface := range groupedAbi["interface"] {
+		functions := []AbiFunction{}
+		for _, funcData := range iface["items"].([]interface{}) {
+			parsedAbi, errWhileParsing := ParseAbiFunction(funcData.(map[string]interface{}), definedTypes)
+			if errWhileParsing != nil {
+				return nil, errParseInterfaces
+			}
+			functions = append(functions, *parsedAbi)
+		}
+		definedInterfaces = append(definedInterfaces, AbiInterface{
+			name:      iface["name"].(string),
+			functions: functions,
+		})
+	}
+
+	// Parse functions
+	functions := make(map[string]AbiFunction)
+	for _, functionData := range groupedAbi["function"] {
+		funcName := functionData["name"].(string)
+		abiFunc, errParsingFunctions := ParseAbiFunction(functionData, definedTypes)
+		if errParsingFunctions != nil {
+			return nil, errParseFunctions
+		}
+		functions[funcName] = *abiFunc
+	}
+
+	// Add functions from interfaces
+	for _, iface := range definedInterfaces {
+		for _, function := range iface.functions {
+			functions[function.name] = function
+		}
+	}
+
+	// Parse events
+	parsedAbiEvents := []AbiEvent{}
+	for _, eventData := range groupedAbi["event"] {
+		parsedEvent, errParsingEvent := ParseAbiEvent(eventData, definedTypes)
+		if errParsingEvent != nil {
+			return nil, errParseEvents
+		}
+		parsedAbiEvents = append(parsedAbiEvents, *parsedEvent)
+	}
+
+	events := make(map[string]AbiEvent)
+	for _, event := range parsedAbiEvents {
+		if event.name != "" {
+			events[event.name] = event
+		}
+	}
+
+	// Parse constructor
+	var constructor []AbiParameter
+	if len(groupedAbi["constructor"]) == 1 {
+		for _, paramData := range groupedAbi["constructor"][0]["inputs"].([]interface{}) {
+			param := paramData.(map[string]interface{})
+			typed, errorParsingType := parseType(param["type"].(string), definedTypes)
+			if errorParsingType != nil {
+				return nil, errParseConstructor
+			}
+			constructor = append(constructor, AbiParameter{
+				Name: param["name"].(string),
+				Type: typed,
+			})
+		}
+	} else {
+		constructor = nil
+	}
+
+	// Parse L1 handler
+	var l1Handler *AbiFunction
+	if len(groupedAbi["l1_handler"]) == 1 {
+		handler, errorParsingFunction := ParseAbiFunction(groupedAbi["l1_handler"][0], definedTypes)
+		if errorParsingFunction != nil {
+			return nil, errParseL1Handler
+		}
+		l1Handler = handler
+	} else {
+		l1Handler = nil
+	}
+
+	// Parse implemented interfaces
+	implementedInterfaces := make(map[string]AbiInterface)
+	implArray, ok := groupedAbi["impl"]
+	if !ok {
+		return nil, errParseImplementedInterfaces
+	}
+	for _, implData := range implArray {
+		implMap := implData
+		if ifaceName, ok := implMap["interface_name"].(string); ok {
+			for _, iface := range definedInterfaces {
+				if iface.name == ifaceName {
+					implementedInterfaces[iface.name] = iface
+				}
+			}
+		}
+	}
+
+	// Return the populated StarknetAbi struct
+	return &StarknetABI{
+		ABIName:               &abiName,
+		ClassHash:             classHash,
+		Functions:             functions,
+		Events:                events,
+		Constructor:           constructor,
+		L1Handler:             l1Handler,
+		ImplementedInterfaces: implementedInterfaces,
+	}, nil
+}