Welcome

Documentation for Polaris Market Data: low-latency Solana swap tape, liquidity books, quote surfaces, and depth over WebSocket and gRPC.

Polaris Market Data is a low-latency Solana market-data API for teams that need live swap tape, simulated quote surfaces, aggregate depth, and full liquidity books.

The API is exposed over authenticated WebSocket and gRPC endpoints for approved teams.

Start here

• Quickstart - connect to an authenticated liquidity book stream.
• Market data - understand the four market-data feeds.
• WebSocket - authenticated WebSocket subscriptions.
• gRPC - typed streaming with polaris.data_gateway.v1.
• Contract V1 - versioning, payload names, and compatibility.
• Latency and freshness - timestamps, slot cadence, and stale data.
• Request access - apply for API access or a data trial.