Overview

NOWNodes provides hosted blockchain node access for 50+ cryptocurrencies via a simple API key — no need to run your own full node for Bitcoin, Ethereum, or other chains. It's a blockchain-as-a-service for developers needing direct RPC access.

Beginner Tip

Use NOWNodes when you need raw RPC calls (e.g. getblockcount, eth_getBalance) to blockchains without syncing a node yourself — it proxies standard JSON-RPC so most client libraries work out of the box.

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

Nownodes data via REST API

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative
{
  "status": "success",
  "data": {
    "result": "Data from Nownodes",
    "description": "Blockchain-as-a-service solution that provides high-quality connection via API",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

id Echo of the request ID you sent; useful for matching async responses to requests.
result The RPC method's return value — an integer for getblockcount, an object for getblock, etc.
error Null on success; contains code and message fields if the RPC call failed.

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://btc.nownodes.io";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

403 Forbidden / authentication error API key not included or included incorrectly
Pass your API key as a query parameter: ?api_key=YOUR_KEY appended to the node endpoint URL, or in the request body for JSON-RPC calls.
Method not supported Calling an RPC method that NOWNodes doesn't expose for that chain
Check the NOWNodes documentation for each chain's supported methods; some advanced or write methods may be restricted.
Incorrect node URL for chain Using the Ethereum endpoint URL for a Bitcoin call, or vice versa
Each blockchain has its own subdomain (e.g. btc.nownodes.io for Bitcoin, eth.nownodes.io for Ethereum) — use the correct one per chain.

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS UNKNOWN
Category Blockchain
Difficulty Intermediate
Listing details not endpoint-verified

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