laconicd/docs/api/json-rpc/running_server.md

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# Running the Server
Learn how to run and setup the JSON-RPC server on Ethermint. {synopsis}
## Enable Server
To enable RPC server use the following flag (set to true by default).
```bash
ethermintd start --json-rpc.enable
```
## Defining Namespaces
`Eth`,`Net` and `Web3` [namespaces](./namespaces) are enabled by default. In order to enable other namespaces use flag `--json-rpc.api`.
```bash
ethermintd start --json-rpc.api eth,txpool,personal,net,debug,web3,miner
```
### CORS
If accessing the RPC from a browser, CORS will need to be enabled with the appropriate domain set. Otherwise, JavaScript calls are limit by the same-origin policy and requests will fail:
```bash
ethermintd start --json-rpc.enable-unsafe-cors
```