Authenticate a Yellowstone gRPC client

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Check your credentials

import Yellowstone from "@triton-one/yellowstone-grpc";

const Client = typeof Yellowstone === "function" ? Yellowstone : Yellowstone.default;

const token = process.env.GRPC_API_TOKEN;
if (!token) throw new Error("Set GRPC_API_TOKEN");
const client = new Client(
  process.env.GRPC_ENDPOINT ?? "https://grpc.solanatracker.io",
  token,
  undefined,
);
console.log(await client.getVersion());

npx tsx check-connection.mts

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Choose a region

• EU: https://grpc.solanatracker.io
• US: https://grpc-us.solanatracker.io

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Troubleshoot connection errors

• Unauthenticated: check that GRPC_API_TOKEN is set, contains no extra whitespace, and belongs to an active subscription.
• Timeout or unavailable: verify the URL and outbound TLS/HTTP2 access; then try the other region.
• Resource exhausted: inspect the error detail. Check connection allowances and message-size limits separately; increasing the receive limit does not fix a quota error.
• Connected but no updates: start with blocksMeta: { blocks: {} }. Then reapply your filters one at a time.

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Store the token

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