Reservoir Sync Node

A customizable lightweight indexer based on the Reservoir indexer. Continuously sync sales and asks into your infrastructure.


The Reservoir Sync Node provides an easy-to-launch syncing system to keep up to date and retrieve bulk NFT data from the Reservoir Data Lake. Currently, our sync node supports backfilling & live syncing for asks and sales data. We highly recommend utilizing the sync node when it comes to handling the task of backfilling historical data. Current backfill time is about 20-40 mins for about 2-3 million rows of data. This methodology provides a streamlined way to manage large datasets effectively, while also reducing time & API usage.


To install the required dependencies for the Light Sync Node, run:

yarn installl

Configuration - ENV

Included is an example .env file (example.env). Rename it to .env and configure as shown below:

# Database configuration
DATABASE_URL=your-postgres-database-url # (Required) PostgresSQL database to pipe data into

# Server configuration

PORT= # (Required) Port to spawn the server on
AUTHORIZATION= # (Required) Server authorization string

# Logger configuration
# (Optional) Datadog app name to send internal logs to
# (Optional) Datadog api key for the above app
# Databse Configuration
DATABASE_URL=your-postgres-database-url # (Required) Database to pipe data into

# Backup configuration
# (Optional) Sign up for a free redis cloud instance

# Syncer configuration
# (Required) Enable or disable the syncing of sales (1 = true | 0 = false)
# (Required) Enable or disable the syncing of asks (1 = true | 0 = false)

CHAIN=mainnet # (Required) Chain to sync
API_KEY=your_reservoir_api_key # (Required) Reservoir API key - Sign up for free

# (Optional) Contracts to filter by - i.e., Only these contracts will be indexed. 
# CONTRACTS=contract1,contract2,contract3

# (Optional) (Default: 1) Number of workers to be used by the managers to parallelize days in months

# (Optional) (Default: 1) Number of managers to be used by the syncers, increase this to increase the amount of months indexed at a time

Configuration - (Prisma) Database

Prisma ORM is used to interact with a PostgresSQL datbase.
To configure please setup the .env as shown below:


For assistance setting up Prisma please visit their documentation.

Configuration - (Redis) Backups

Redis is used to store temporary backups of the current state of the Sync Node in case it is to go down.
This allows the Sync Node to restart right where it left off.
For easy an easy no hassle setup use:

To configure please setup the .env as shown below:



To launch the Sync Node, run the command below:

yarn start

Advanced Usage Guide


The Sync Node also has several scripts that can be used to reset the backup and database:

yarn purge:sales // -> DELETES all records from the sales table 
yarn purge:asks // -> DELETES all records from the asks table 
yarn purge:backup // -> Flushes the current backup


The Sync Node exposes a GraphQl path that allows for basic querying to retrieved synced data.

Below are two partial Schemas that show the data that can be returned:

Sales Schema:

    fill_source: {
      type: GraphQLString,
      resolve: (parents): string => {
        return parents.fill_source;
    created_at: {
      type: GraphQLString,
      resolve: (parents): string => {
        return new Date(parents.created_at).toISOString();
    tx_hash: {
      type: GraphQLString,
      resolve: (parents): string => {
        return '0x' + parents.tx_hash.toString('hex');

Asks Schema:

    status: {
      type: GraphQLString,
      resolve: (parents): string | null => parents.status,
    token_set_id: {
      type: GraphQLString,
      resolve: (parents): string | null => parents.token_set_id,
    token_set_schema_hash: {
      type: GraphQLString,
      resolve: (parents): string => {
        return parents.token_set_schema_hash
          ? '0x' + parents.token_set_schema_hash.toString('hex')
          : '';

To view the complete models, checkout the Schema.ts file.

View the interaction examples below

Sales Request:

curl --location --globoff '{sale(offset%3A%25200){block%20fill_source%20created_at%20tx_hash}}' \
--header 'Authorization;' \

Ask Request

curl --location --globoff '{ask(offset%3A%25200){status%20token_set_id%20token_set_schema_hash}}' \
--header 'Authorization;' \

OTA Updates

The Sync Node's express server provides a /sync/create endpoint, which allows you to add new contracts for backfilling and upkeep. To utilize this feature, you need to send a POST request with the required query parameters:

  • type=TABLE_NAME
  • contract=CONTRACT_ID

In the type parameter, specify either "asks" or "sales" based on your requirements. For the contract parameter, provide a valid contract ID corresponding to the blockchain your Sync Node is operating on.

An example of a complete POST request is shown below:

curl --location --request POST ''

This request will add the specified contract to the Sync Node for backfilling and upkeeping.