# Setup the ETH RPC Adaptor for the Script Testnet This page provides the instructions to setup the ETH RPC Adaptor for the Script Testnet on a virtual machine. The adaptor is a middleware which translates the Script RPC interface to the Ethereum RPC interface. To enable the Script ETH RPC API service, you’d need to run 1. the Script Node, and 2. the Script/ETH RPC adaptor on the same VM. Below is the recommended VM spec: OS: Ubuntu (18.04.4 LTS or higher version) CPU: 4 cores or more Memory: 32 GB or more Hardrive: 1 TB+ SSD drive (I) Install and Launch the Script Testnet Node () (II) Install and Launch the ETH RPC adaptor > Install the adaptor You'd need to compile the adaptor from the source code. First, install Go 1.14.2 and set environment variables GOPATH , GOBIN, and PATH. Next, clone the Script blockchain repo and install Script following the steps below: mkdir -p $GOPATH/src/github.com/scripttoken cd $GOPATH/src/github.com/scripttoken git clone $GOPATH/src/github.com/scripttoken/script cd script git checkout release export GO111MODULE=on make install Next, clone the script-eth-rpc-adaptor repo: cd $GOPATH/src/github.com/scripttoken git clone Following the steps below to build the script-eth-rpc-adaptor binary and copy it into your $GOPATH/bin. export SCRIPT\_ETH\_RPC\_ADAPTOR\_HOME=$GOPATH/src/github.com/scripttoken/script-eth-rpc-adaptor cd $SCRIPT\_ETH\_RPC\_ADAPTOR\_HOME export GO111MODULE=on make install > Start the Adaptor Now, create the config folder for the RPC adaptor export SCRIPT\_ETH\_RPC\_ADAPTOR\_HOME=$GOPATH/src/github.com/scripttoken/script-eth-rpc-adaptor cd $SCRIPT\_ETH\_RPC\_ADAPTOR\_HOME mkdir -p ../scriptnet/eth-rpc-adaptor Use your favorite editor to open file ../scriptnet/eth-rpc-adaptor/config.yaml, paste in the follow content, save and close the file: script: rpcEndpoint: "" node: skipInitializeTestWallets: true rpc: enabled: true httpAddress: "0.0.0.0" httpPort: 18888 wsAddress: "0.0.0.0" wsPort: 18889 timeoutSecs: 600 maxConnections: 2048 log: levels: "\*:info" Then, launch the adaptor binary with the following command: screen -S rpc\_adaptor # if you run the node on a Linux server cd $SCRIPT\_ETH\_RPC\_ADAPTOR\_HOME script-eth-rpc-adaptor start --config=../scriptnet/eth-rpc-adaptor The ETH RPC server should now be started at port 18888. > Sanity checks After the adaptor is started, you can issue the following curl commands to make sure the ETH RPC APIs service is up and running. Note that in the config.yaml file, rpc.httpAddress is set to "0.0.0.0", which enables the RPC APIs to be accessible from a remote machine. Of course, you'd also need to setup proper firewall rules to allow remote access. ## Query Chain ID curl -X POST -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0","method":"eth\_chainId","params":\[],"id":67}' ## Query synchronization status curl -X POST -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0","method":"eth\_syncing","params":\[],"id":1}' ## Query block number curl -X POST -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0","method":"eth\_blockNumber","params":\[],"id":83}' ## Query account SPAY balance (should return an integer which represents the current SPAY balance in wei) curl -X POST -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0","method":"eth\_getBalance","params":\["0xc15149236229bd13f0aec783a9cc8e8059fb28da", "latest"],"id":1}' --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://documentation.script.tv/smart-contract-and-app-development/setup-the-eth-rpc-adaptor-for-the-script-testnet.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.