A Substreams package defines the data you want to extract from the blockchain. Then, you can consume that data by using one of the many sinks available. Sinks are integrations that allow you to send the extracted data to different destinations, such as a SQL database, a file or a subgraph.

Some of the sinks are officially supported by one or several Substreams providers (i.e. active support is provided), but other sinks are community-driven and support can't be guaranteed.

Official

Name	Support	Maintainer	Source Code
SQL	O	StreamingFast	substreams-sink-sql
Go SDK	O	StreamingFast	substreams-sink
Rust SDK	O	StreamingFast	substreams-sink-rust
JS SDK	O	StreamingFast	substreams-js
KV Store	O	StreamingFast	substreams-sink-kv
Prometheus	O	Pinax	substreams-sink-prometheus
Webhook	O	Pinax	substreams-sink-webhook
CSV	O	Pinax	substreams-sink-csv
PubSub	O	StreamingFast	substreams-sink-pubsub

Community

Name	Support	Maintainer	Source Code
MongoDB	C	Community	substreams-sink-mongodb
Files	C	Community	substreams-sink-files

O = Official Support (by one of the main Substreams providers)
C = Community Support

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