Documentation Index
Fetch the complete documentation index at: /llms.txt
Use this file to discover all available pages before exploring further.
Choose slot updates, block metadata, or filtered block payloads with Yellowstone gRPC. Track commitment changes and handle gaps.
stream.mts in the same directory. These examples use the same environment variables and dependencies.
import { subscribe } from "./stream.mts";
for await (const update of subscribe({
slots: { slots: { filterByCommitment: true } },
blocksMeta: { blocks: {} },
})) {
if (update.slot) {
console.log("slot", update.slot.slot, update.slot.parent, update.slot.status);
}
if (update.blockMeta) {
console.log("block", update.blockMeta.slot, update.blockMeta.blockhash,
update.blockMeta.executedTransactionCount);
}
}
npx tsx slots.mts
filterByCommitment: true aligns slot notifications with the request commitment. A slot can have several status updates; keep status as well as slot number when recording transitions.
import { subscribe } from "./stream.mts";
const address = process.env.WATCH_ADDRESS;
if (!address) throw new Error("Set WATCH_ADDRESS");
for await (const update of subscribe({
blocks: {
selected: {
accountInclude: [address],
includeTransactions: true,
includeAccounts: false,
includeEntries: false,
},
},
})) {
if (!update.block) continue;
console.log(update.block.slot, update.block.transactions.length);
}
Was this page helpful?