TriportRPC
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getSlotLeaders

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`getSlotLeaders` returns the validator that is scheduled to produce each slot over a window of the leader schedule. Given a `startSlot` and a `limit`, it returns an ordered array of base-58 validator identity public keys: element `0` is the leader of `startSlot`, element `1` of `startSlot + 1`, and so on.

Use it to predict which validator will produce upcoming slots — for example to route a transaction toward the next leader's TPU, to attribute confirmed slots to a validator, or to render an upcoming leader schedule. Because Solana assigns leaders in fixed-size groups of consecutive slots, you will typically see the same pubkey repeated for several entries in a row.

The window must fall within the leader schedule the cluster currently knows about (the current and next epoch). Requesting a `startSlot` too far in the future, or a `limit` outside the `1–5000` range, returns an invalid-params error rather than a partial list.

Parameters

getSlotLeaders parameters
NameTypeRequiredDescription
startSlotSlotYes
limitintegerYes

Returns

getSlotLeaders return value
FieldType
resultarray

Examples

curl https://<your-endpoint>/ \
  -X POST -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"getSlotLeaders","params":["<startSlot>","<limit>"]}'
const res = await fetch("https://<your-endpoint>/", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
  "id": 1,
  "method": "getSlotLeaders",
  "params": [
    "<startSlot>",
    "<limit>"
  ],
  "jsonrpc": "2.0"
}),
});
const data = await res.json();
import requests
resp = requests.post("https://<your-endpoint>/", json={"id":1,"method":"getSlotLeaders","params":["<startSlot>","<limit>"],"jsonrpc":"2.0"})
print(resp.json())

Usage

  1. Transport: HTTP (JSON-RPC).
  2. Networks: mainnet, devnet, testnet.
  3. Credit cost: 1 per call.

FAQ

What does getSlotLeaders do?
Returns the ordered list of slot leaders (validator identity pubkeys) for a contiguous range of slots.
How many credits does getSlotLeaders cost?
getSlotLeaders costs 1 credit(s) per call on Triport by default.
Is getSlotLeaders available over WebSocket?
getSlotLeaders is an HTTP JSON-RPC method.