A squid template indexing ERC20 transfers. The squid fetches the historical Transfer
event, decodes and persists to a Transfer
table. A new entry is created in the Account
table for each address that has interacted with the contract so that one can query the transfer history for each EVM address.
Dependencies: NodeJS v16 or newer, Git, Docker.
- Install Squid CLI:
npm i -g @subsquid/cli
- Inspect the list of the available archives with
sqd archives:ls
and choose the network if necessary Set theRPC_ENDPOINT
env variable to a chain node RPC URL. Use secrets when deploying the squid to Subsquid Cloud.
npm ci
# start a local Postgres
sqd up
# build the squid
sqd build
# start both the squid processor and the GraphQL server
sqd run .
A GraphiQL playground will be available at localhost:4350/graphql.
You can also start squid services one by one:
sqd process
sqd serve