About polkadot_metadata.scale

[Cupnfish]

I don't know how to generate such a file for my own chain, is there a special document for it?

[insipx]

Hey @Cupnfish ,

you can get the polkadot_metadata.scale file, or really any .scale file from a running node with this unix command:

curl -sX POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"state_getMetadata", "id": 1}' localhost:9933 \
                    | jq .result \
                    | cut -d '"' -f 2 \
                    | xxd -r -p > ./your_scale_file.scale

[Cupnfish]

Thanks 😊

[ascjones]

Also you can use subxt-cli now, cargo run -p subxt-cli -- metadata -f bytes > metadata.scale.

Just opened a PR #319 with that