Update docs again

packages/types-support/src/metadata/README.md

@@ -8,6 +8,26 @@ Clone the [polkadot-sdk](https://github.com/paritytech/polkadot-sdk) repository
 
 `--dev` sets the flag `--tmp` automatically so there is no need for purging the dev db.
 
+To retrieve the metadata -
+
+`curl -H "Content-Type: application/json" -d '{"id":"1", "jsonrpc":"2.0", "method": "state_getMetadata", "params":[]}' http://localhost:9944`
+
+- Add it to the relevant folders e.g. `v14/{kusama, polkadot, substrate}-hex.json`
+
+To retrieve the rpc methods -
+
+`curl -H "Content-Type: application/json" -d '{"id":"1", "jsonrpc":"2.0", "method": "rpc_methods", "params":[]}' http://localhost:9944`
+
+- Add it to the relevant folders e.g. `v14/{kusama, polkadot, substrate}-rpc.ts`
+
+To retrieve the runtime versions -
+
+`curl -H "Content-Type: application/json" -d '{"id":"1", "jsonrpc":"2.0", "method": "state_getRuntimeVersion", "params":[]}' http://localhost:9944`
+
+- Add it to the relevant folders e.g. `v14/{kusama, polkadot, substrate}-ver.ts`
+
+NOTE: This all works for manual updating, but for an easier process run from root for each respective chain: `node ./scripts/metadata-get.mjs`
+
 ## extraction (Legacy)
 
 For Substrate & Polkadot (dev chains) -