How to create a Subgraph

Get the ABI of the contract you want to index

either get it from the build, e.g.

yq ".abi" contracts-dir/out/Contract.sol/Contract.json > subgraphs/abis/Contract.json

Run the graph CLI command

cd subgraphs

# install on Linux
yarn global add @graphprotocol/graph-cli # install if u haven't
# or install on MacOS
npm install -g @graphprotocol/graph-cli

graph init --from-contract <contract_addr> --network {goerli,mainnet} --abi abis/Contract.json 

And go through the dialog.

Remove the git files in folder

Suppose you created the subgraph in the folder named contract-indexing

cd contract-indexing

rm -rf .git

Generate bindings and build subgraph

# on Linux
yarn codegen
yarn build

# on MacOS
npm run codegen

Develop more

Check out the graph docs.