> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# minimumLedgerSlot | Solana

> The Solana minimumLedgerSlot method returns the lowest slot that the node has information about in its ledger. Solana via Chainstack.

The Solana `minimumLedgerSlot` method returns the lowest slot that the node has information about in its ledger.

As validators prune old ledger data, this value increases over time. This method is useful for determining how far back in history a node can serve data.

## Parameters

This method does not require any parameters.

## Response

* `result` (integer) — the minimum ledger slot number available on the node.

## Use case

A common use case for `minimumLedgerSlot` is in determining whether a node can serve historical data for a given slot. Before requesting block or transaction data for a specific slot, you can check `minimumLedgerSlot` to verify the data is still available. This is especially relevant when deciding between a full node and an [archive node](/docs/solana-archive-nodes-the-backbone-of-solanas-data-availability-and-developer-tooling).


## OpenAPI

````yaml openapi/solana_node_api/minimumLedgerSlot.json POST /9de47db917d4f69168e3fed02217d15b
openapi: 3.0.0
info:
  title: minimumLedgerSlot example
  version: 1.0.0
  description: This is an API example for Solana's minimumLedgerSlot.
servers:
  - url: https://nd-326-444-187.p2pify.com
security: []
paths:
  /9de47db917d4f69168e3fed02217d15b:
    post:
      tags:
        - query
      summary: minimumLedgerSlot
      operationId: minimumLedgerSlot
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: minimumLedgerSlot
                params:
                  type: array
                  default: []
      responses:
        '200':
          description: Minimum ledger slot
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: integer
                    description: Minimum ledger slot number

````