# Markers and Pagination

Some methods return more data than can efficiently fit into one response. When there are more results than contained, the response includes a `marker` field. You can use this to retrieve more pages of data across multiple calls. In each request, pass the `marker` value from the previous response to resume from the point where you left off. If the `marker` is omitted from a response, then you have reached the end of the data set.

The format of the `marker` field is intentionally undefined. Each server can define a `marker` field as desired, so it may take the form of a string, a nested object, or another type. Different servers, and different methods provided by the same server, can have different `marker` definitions. Each `marker` is ephemeral, and may not work as expected after 10 minutes.

Python
from xrpl.clients import JsonRpcClient
from xrpl.models.requests import LedgerData

# Create a client to connect to the network.
client = JsonRpcClient("https://xrplcluster.com/")

# Query the most recently validated ledger for info.
ledger = LedgerData(ledger_index="validated")
ledger_data = client.request(ledger).result
ledger_data_index = ledger_data["ledger_index"]

# Create a function to run on each API call.
def printLedgerResult():
    print(ledger_data)

# Execute function at least once before checking for markers.
while True:
    printLedgerResult()
    if "marker" not in ledger_data:
        break
    
    # Specify the same ledger and add the marker to continue querying.
    ledger_marker = LedgerData(ledger_index=ledger_data_index, marker=ledger_data["marker"])
    ledger_data = client.request(ledger_marker).result

JavaScript
const xrpl = require("xrpl")

async function main() {

  // Create a client and connect to the network.
  const client = new xrpl.Client("wss://xrplcluster.com/")
  await client.connect()

  // Query the most recently validated ledger for info.
  let ledger = await client.request({
    "command": "ledger_data",
    "ledger_index": "validated",
  })
  const ledger_data_index = ledger["result"]["ledger_index"]

  // Create a function to run on each API call.
  function printLedgerResult(){
    console.log(ledger["result"])
  }

  // Execute function at least once before checking for markers.
  do {
    printLedgerResult()

    if (ledger["result"]["marker"] === undefined) {
        break
    }

    // Specify the same ledger and add the marker to continue querying.
    const ledger_marker = await client.request({
        "command": "ledger_data",
        "ledger_index": ledger_data_index,
        "marker": ledger["result"]["marker"]
    })
    ledger = ledger_marker

  } while (true)

  // Disconnect when done. If you omit this, Node.js won't end the process.
  await client.disconnect()
}

main()