Quicknode Blockchain Infrastructure

Intake Questions

• Which chain and network should Quicknode target?
• Is this read-only or should I create infrastructure (streams, webhooks, IPFS writes)?
• Does this require real-time streaming (gRPC/Yellowstone/Hypercore) or standard RPC?
• What endpoint or API key should I use (default: QUICKNODE_RPC_URL, optional QUICKNODE_WSS_URL / QUICKNODE_API_KEY)?
• Any constraints (latency, regions, throughput, destinations)?

Safety Defaults

• Default to testnet/devnet when a network is not specified.
• Prefer read-only operations and dry runs before creating resources.
• Never ask for or accept private keys or secret keys.

Confirm Before Write

• Require explicit confirmation before creating or modifying Streams, Webhooks, or IPFS uploads.
• If confirmation is missing, return the exact API payload for review.

Quick Reference

RPC Endpoints

Quicknode provides low-latency RPC endpoints for 80+ blockchain networks.

Endpoint Setup

// EVM chains (ethers.js)
import { JsonRpcProvider } from 'ethers';
const provider = new JsonRpcProvider(process.env.QUICKNODE_RPC_URL!);

// EVM chains (viem)
import { createPublicClient, http } from 'viem';
import { mainnet } from 'viem/chains';
const client = createPublicClient({
  chain: mainnet,
  transport: http(process.env.QUICKNODE_RPC_URL!),
});

// Solana
import { createSolanaRpc } from '@solana/kit';
const rpc = createSolanaRpc(process.env.QUICKNODE_RPC_URL!);

Authentication

Quicknode endpoints include authentication in the URL:

https://{ENDPOINT_NAME}.{NETWORK}.quiknode.pro/{API_KEY}/

For additional security, enable JWT authentication or IP allowlisting in the Quicknode dashboard.

Supported Networks

Not exhaustive. Full list: https://www.quicknode.com/chains

Rate Limits & Plans

As of 2026-02-02. Verify current limits in Quicknode docs before sizing a production system.

See references/rpc-reference.md for complete RPC documentation including method tables for EVM, Solana, and Bitcoin chains, WebSocket patterns, and batch request examples.

Streams

Real-time & historical blockchain data pipelines that filter, transform, and deliver data to your destinations.

Stream Types

Quick Setup

1. Create stream in Quicknode dashboard
2. Select network and data type
3. Add filter function (JavaScript)
4. Configure destination (webhook, S3, database)

Basic Filter Function

See references/streams-reference.md for filter examples and full Streams documentation.

Webhooks

Event-driven notifications for blockchain activity.

Webhooks vs Streams

Webhook Setup

See references/webhooks-reference.md for API examples and full Webhooks documentation.

IPFS Storage

Decentralized file storage with Quicknode's IPFS gateway.

See references/ipfs-reference.md for upload examples, metadata examples, and complete IPFS documentation.

Marketplace Add-ons

Enhanced APIs available through Quicknode's marketplace.

Token API (Ethereum)

// Get all token balances for an address
const response = await fetch(process.env.QUICKNODE_RPC_URL!, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    method: 'qn_getWalletTokenBalance',
    params: [{ wallet: '0x...', contracts: [] }]
  })
});

NFT API (Ethereum)

// Fetch NFTs owned by address
const response = await fetch(process.env.QUICKNODE_RPC_URL!, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    method: 'qn_fetchNFTs',
    params: [{ wallet: '0x...', page: 1, perPage: 10 }]
  })
});

Solana Priority Fee API

// Get recommended priority fees
const response = await rpc.request('qn_estimatePriorityFees', {
  last_n_blocks: 100,
  account: 'YOUR_ACCOUNT'
}).send();

Metis - Jupiter Swap API

// Using Metis - Jupiter Swap API
import { createJupiterApiClient } from '@jup-ag/api';

const jupiterApi = createJupiterApiClient({
  basePath: `${process.env.QUICKNODE_METIS_URL}`
});

const quote = await jupiterApi.quoteGet({
  inputMint: 'So11111111111111111111111111111111111111112',
  outputMint: 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v',
  amount: 1000000000,
  slippageBps: 50
});

const swapResult = await jupiterApi.swapPost({
  swapRequest: {
    quoteResponse: quote,
    userPublicKey: 'YourPubkey...'
  }
});

See references/marketplace-addons.md for complete Add-ons documentation.

Solana DAS API (Digital Asset Standard)

Comprehensive API for querying Solana digital assets — standard NFTs, compressed NFTs (cNFTs), fungible tokens, MPL Core Assets, and Token 2022 Assets. Available as a Marketplace add-on (Metaplex DAS API).

Docs: https://www.quicknode.com/docs/solana/solana-das-api

Quick Setup

// Get all assets owned by a wallet
const response = await fetch(process.env.QUICKNODE_RPC_URL, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 1,
    method: 'getAssetsByOwner',
    params: {
      ownerAddress: 'E645TckHQnDcavVv92Etc6xSWQaq8zzPtPRGBheviRAk',
      limit: 10,
      options: { showFungible: true, showCollectionMetadata: true }
    }
  })
});
const { result } = await response.json();
// result.total — total assets
// result.items — array of asset metadata
// result.cursor — for pagination

Available Methods

See references/solana-das-api-reference.md for complete DAS API documentation with all methods, parameters, and examples.

Yellowstone gRPC (Solana)

High-performance Solana Geyser plugin for real-time blockchain data streaming via gRPC. Available as a Marketplace add-on.

Quick Setup

import Client, { CommitmentLevel } from "@triton-one/yellowstone-grpc";

// Derive from HTTP URL: https://example.solana-mainnet.quiknode.pro/TOKEN/
const client = new Client(
  "https://example.solana-mainnet.quiknode.pro:10000",
  "TOKEN",
  {}
);

const stream = await client.subscribe();
stream.on("data", (data) => {
  if (data.transaction) console.log("Tx:", data.transaction);
});

stream.write({
  transactions: {
    txn_filter: {
      vote: false,
      failed: false,
      accountInclude: ["PROGRAM_PUBKEY"],
      accountExclude: [],
      accountRequired: [],
    },
  },
  accounts: {},
  slots: {},
  blocks: {},
  blocksMeta: {},
  transactionsStatus: {},
  entry: {},
  accountsDataSlice: [],
  commitment: CommitmentLevel.CONFIRMED,
});

Filter Types

See references/yellowstone-grpc-reference.md for complete Yellowstone gRPC documentation.

HyperCore (Hyperliquid)

Quicknode's data delivery infrastructure for the Hyperliquid L1 chain. Provides gRPC, JSON-RPC, WebSocket, and Info API access. Currently in public beta.

Access Methods

gRPC Stream Types

HyperEVM

See references/hypercore-hyperliquid-reference.md for complete HyperCore and Hyperliquid documentation.

Quicknode SDK

Official JavaScript/TypeScript SDK for Quicknode services.

Installation

npm install @quicknode/sdk

Basic Usage

import { Core } from '@quicknode/sdk';

const core = new Core({
  endpointUrl: process.env.QUICKNODE_RPC_URL!,
});

// Token API
const balances = await core.client.qn_getWalletTokenBalance({
  wallet: '0x...',
});

// NFT API
const nfts = await core.client.qn_fetchNFTs({
  wallet: '0x...',
  page: 1,
  perPage: 10,
});

See references/sdk-reference.md for complete SDK documentation.

Admin API

REST API for programmatic management of Quicknode endpoints, usage, rate limits, security, billing, and teams. Enables infrastructure-as-code workflows.

Quick Reference

Authentication

All requests use the x-api-key header against https://api.quicknode.com/v0/.

const QN_API_KEY = process.env.QUICKNODE_API_KEY!;

const res = await fetch('https://api.quicknode.com/v0/endpoints', {
  headers: { 'x-api-key': QN_API_KEY },
});
const endpoints = await res.json();

See references/admin-api-reference.md for full Admin API documentation including endpoint CRUD, usage monitoring, rate limit configuration, security options, billing, and teams.

Key-Value Store (Beta)

Serverless storage for lists and key-value sets, primarily accessed from within Streams filter functions via the qnLib helper library. Also available via REST API.

Stream Integration (qnLib)

List operations — manage lists of items (e.g., wallet addresses):

• qnLib.qnUpsertList — create or update a list
• qnLib.qnAddListItem — add item to a list
• qnLib.qnRemoveListItem — remove item from a list
• qnLib.qnContainsListItems — batch membership check
• qnLib.qnDeleteList — delete a list

Set operations — manage key-value pairs:

• qnLib.qnAddSet — create a key-value set
• qnLib.qnGetSet — retrieve value by key
• qnLib.qnBulkSets — bulk create/remove sets
• qnLib.qnDeleteSet — delete a set

Docs: https://www.quicknode.com/docs/key-value-store

x402 (Pay-Per-Request RPC)

Pay-per-request RPC access via USDC micropayments on Base. No API key required — authenticate with Sign-In with Ethereum (SIWE), purchase credits, and access 140+ chain endpoints.

Quick Setup

import { wrapFetch } from "@x402/fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount(process.env.PRIVATE_KEY as `0x${string}`);
const walletClient = createWalletClient({
  account,
  chain: base,
  transport: http(),
});

// Wrap fetch to auto-handle 402 payments
const x402Fetch = wrapFetch(fetch, walletClient);

// Use like normal fetch — payments are handled automatically
const response = await x402Fetch("https://x402.quicknode.com/ethereum-mainnet", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    jsonrpc: "2.0",
    method: "eth_blockNumber",
    params: [],
    id: 1,
  }),
});

See references/x402-reference.md for complete x402 documentation including SIWE authentication, credit management, and the @x402/fetch wrapper.

Common Patterns

Multi-Chain dApp Setup

import { Core } from '@quicknode/sdk';

const chains = {
  ethereum: new Core({
    endpointUrl: 'https://YOUR_ETH_ENDPOINT.quiknode.pro/KEY/'
  }),
  polygon: new Core({
    endpointUrl: 'https://YOUR_POLYGON_ENDPOINT.quiknode.pro/KEY/'
  }),
  arbitrum: new Core({
    endpointUrl: 'https://YOUR_ARB_ENDPOINT.quiknode.pro/KEY/'
  }),
};

// Use appropriate chain
const ethBalance = await chains.ethereum.client.getBalance({ address: '0x...' });

Real-Time Transaction Monitoring

1. Create Stream filtering for your contract address
2. Add Filter Function to extract relevant events
3. Configure Webhook destination to your server
4. Process Events in your backend

NFT Collection Indexing

1. Use Streams to capture mint/transfer events
2. Store in Database via PostgreSQL destination
3. Query via Add-ons for current ownership data
4. Query via SDK for custom API endpoints

Real-Time Solana Monitoring with Yellowstone gRPC

1. Connect via gRPC on port 10000 with your auth token
2. Subscribe to transactions filtering by program or account
3. Process updates in real-time via the streaming interface
4. Implement reconnection with exponential backoff

Hyperliquid Trading Data Pipeline

1. Connect via gRPC on port 10000 for lowest-latency data
2. Subscribe to TRADES/ORDERS streams with coin filters
3. Process events — handle ~12 blocks/sec throughput
4. Use Info API (/info) for account state and market metadata

Best Practices

RPC

• Use WebSocket for subscriptions and real-time data
• Implement retry logic with exponential backoff
• Cache responses when data doesn't change frequently
• Use batch requests to reduce API calls

Streams

• Start with narrow filters, expand as needed
• Test filter functions locally before deployment
• Streams will automatically retry on failures
• Monitor stream health via dashboard

Security

• Store API keys in environment variables
• Enable IP allowlisting for production
• Use JWT authentication for sensitive operations
• Rotate API keys periodically

gRPC

• Enable zstd compression to reduce bandwidth (up to 70% for Hyperliquid)
• Implement reconnection logic with exponential backoff — streams can drop
• Use narrow filters (specific accounts, coins, or programs) to minimize data volume
• Set appropriate commitment levels (Yellowstone: CONFIRMED for most use cases, FINALIZED for irreversibility)
• Send keepalive pings (every 10s for Yellowstone, every 30s for Hypercore) to maintain connections

Documentation Links

Quicknode Products

• Main Docs: https://www.quicknode.com/docs/
• Streams: https://www.quicknode.com/docs/streams
• Webhooks: https://www.quicknode.com/docs/webhooks
• IPFS: https://www.quicknode.com/docs/ipfs
• SDK: https://www.quicknode.com/docs/quicknode-sdk
• Admin API: https://www.quicknode.com/docs/admin-api
• DAS API (Solana): https://www.quicknode.com/docs/solana/solana-das-api
• Yellowstone gRPC: https://www.quicknode.com/docs/solana/yellowstone-grpc/overview
• Hyperliquid: https://www.quicknode.com/docs/hyperliquid
• Hyperliquid gRPC: https://www.quicknode.com/docs/hyperliquid/grpc-api
• Key-Value Store: https://www.quicknode.com/docs/key-value-store
• x402: https://x402.quicknode.com

Chain-Specific Docs

• Ethereum: https://www.quicknode.com/docs/ethereum
• Solana: https://www.quicknode.com/docs/solana
• Polygon: https://www.quicknode.com/docs/polygon
• Arbitrum: https://www.quicknode.com/docs/arbitrum
• Base: https://www.quicknode.com/docs/base
• Optimism: https://www.quicknode.com/docs/optimism
• Avalanche: https://www.quicknode.com/docs/avalanche
• BNB Smart Chain: https://www.quicknode.com/docs/bnb-smart-chain
• Hyperliquid: https://www.quicknode.com/docs/hyperliquid

LLM-Optimized Documentation

• Platform Overview (llms.txt): https://www.quicknode.com/llms.txt — High-level index of all Quicknode products, chains, guides, and solutions
• Docs Index (llms.txt): https://www.quicknode.com/docs/llms.txt — Per-chain and per-product documentation index (links to https://www.quicknode.com/docs/{chain-or-product}/llms.txt)
• x402 (llms.txt): https://x402.quicknode.com/llms.txt

Additional Resources

• Quicknode Guides: https://www.quicknode.com/guides
• SDK Reference: https://www.quicknode.com/docs/quicknode-sdk
• Marketplace: https://marketplace.quicknode.com/
• Sample App Library: https://www.quicknode.com/sample-app-library
• Guide Examples Repo: https://github.com/quiknode-labs/qn-guide-examples