---
id: references/solana-grpc-subscribe-slots.md
name: 'Subscribe Slots'
description: 'Slot updates provide heartbeat-style updates and can be used to track chain progress.'
tags:
  - alchemy
  - solana
related:
  - solana-grpc-subscribe-blocks.md
updated: 2026-02-05
---
# Subscribe Slots

## Summary
Slot updates provide heartbeat-style updates and can be used to track chain progress.

## Use Cases
- Detect chain liveness.
- Coordinate block ingestion windows.

## Related Files
- `solana-grpc-subscribe-blocks.md`

## Official Docs
- [Yellowstone gRPC API Overview](https://www.alchemy.com/docs/reference/yellowstone-grpc-api-overview)
