GetChainParameters - Tron

Example code for the GetChainParameters gRPC method. Complete guide on how to use GetChainParameters gRPC method in GetBlock Web3 documentation.

This method returns the current network parameters set by on-chain governance, such as Energy and Bandwidth prices and transaction fees.

Service

This method is served by the protocol.Wallet service.

Method

rpc GetChainParameters (EmptyMessage) returns (ChainParameters)

Request Message

EmptyMessage

This message has no fields.

Request

grpcurl

grpcurl -H 'x-api-key: <ACCESS-TOKEN>' \
  -d '{}' \
  go.getblock.io:443 protocol.Wallet/GetChainParameters

Python

example.py

import grpc
# Stubs generated from java-tron's api.proto with grpcio-tools
from api import api_pb2_grpc
from core import Contract_pb2, Tron_pb2

creds = grpc.ssl_channel_credentials()
channel = grpc.secure_channel('go.getblock.io:443', creds)
metadata = [('x-api-key', '<ACCESS-TOKEN>')]
stub = api_pb2_grpc.WalletStub(channel)

response = stub.GetChainParameters(Tron_pb2.EmptyMessage(), metadata=metadata)
print(response)

Go

example.go

conn, _ := grpc.Dial(
    "go.getblock.io:443",
    grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
)
defer conn.Close()

client := api.NewWalletClient(conn)
ctx := metadata.AppendToOutgoingContext(
    context.Background(), "x-api-key", "<ACCESS-TOKEN>")

resp, _ := client.GetChainParameters(ctx, &api.EmptyMessage{})
fmt.Println(resp)

Response Message

ChainParameters

Field	Type	Description
chainParameter	repeated ChainParameter	Network parameters as key and value pairs
chainParameter[].key	string	Parameter name, such as getEnergyFee
chainParameter[].value	int64	Parameter value, in SUN where a price

Use Cases

• Fee Calculation: Read the Energy price to compute call costs

• Cost Modeling: Read transaction and account-creation fees

• Governance Tracking: Detect parameter changes voted on-chain

• Wallet Configuration: Configure fee estimates from live parameters

Error Handling

Code	Status	Description
3	INVALID_ARGUMENT	A request field is missing or malformed
5	NOT_FOUND	The requested account, block, or transaction does not exist
16	UNAUTHENTICATED	The access token is missing or invalid
13	INTERNAL	The node failed to process the request