Struct SubsquidClient 

pub struct SubsquidClient { /* private fields */ }

Client for querying the Subsquid indexer.

Implementations

impl SubsquidClient

pub fn new(url: String) -> Result<Self>

Create a new Subsquid client.

Arguments

• url - The GraphQL endpoint URL (e.g., “https://indexer.quantus.com/graphql”)

pub async fn query_transfers_by_prefix( &self, to_prefixes: Option<Vec<String>>, from_prefixes: Option<Vec<String>>, params: TransferQueryParams, ) -> Result<Vec<Transfer>>

Query transfers by hash prefixes.

This method allows privacy-preserving queries by matching against blake3 hash prefixes of addresses rather than the addresses themselves.

Arguments

• to_prefixes - Hash prefixes for destination addresses (OR logic)
• from_prefixes - Hash prefixes for source addresses (OR logic)
• params - Additional query parameters (block range, amount filters, pagination)

Returns

A list of matching transfers. Returns an error if too many results match.

pub async fn query_transfers_for_addresses( &self, addresses: &[[u8; 32]], prefix_len: usize, params: TransferQueryParams, ) -> Result<Vec<Transfer>>

Query transfers for a set of addresses using privacy-preserving hash prefixes.

This is a convenience method that:

1. Computes hash prefixes for all provided addresses
2. Queries the indexer with those prefixes
3. Filters results locally to only include transfers involving the exact addresses

Arguments

• addresses - Raw 32-byte account IDs to query for
• prefix_len - Length of hash prefix to use (shorter = more privacy, more noise)
• params - Additional query parameters

Returns

Transfers involving any of the provided addresses (filtered locally for exact matches)