getSlotLeaders

getSlotLeaders is a Solana JSON-RPC method that returns the leader for each slot across a contiguous range on the chain that secures SOL. You pass a startSlot and a limit, and the response is an array of base-58 pubkeys — one entry per slot, in order. It is the range counterpart to getSlotLeader, handy for looking ahead at who will produce upcoming blocks. Send it as a JSON-RPC 2.0 POST with positional params to https://solana.therpc.io/YOUR_API_KEY.

Use cases

• Precompute the upcoming leaders for the next stretch of slots so a client can forward Solana transactions straight to the right TPU.
• Map a range of slots to the validators that led them, for example to attribute blocks or analyze leader distribution over a window.

Parameters

Response

Example request

1curl https://solana.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H "Content-Type: application/json" \
4  -d '{
5  "jsonrpc": "2.0",
6  "id": 1,
7  "method": "getSlotLeaders",
8  "params": [
9    250000000,
10    10
11  ]
12}'

Errors & troubleshooting

Common pitfalls

• limit is capped at 5000, so split longer ranges into successive chunks and stitch the arrays together.
• The range must fall within the currently known leader schedule — far-future slots beyond the computed schedule are not available and will return an error.

Supported networks

• Mainnet
• Devnet

See also

• getSlotLeader
• getLeaderSchedule