Unlock Deep Insights with Debug & Trace API

Access advanced debugging and tracing methods to analyze contract execution, inspect internal calls, and understand every step of on-chain activity — now available across our supported networks.

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110+

Blockchains

24/7

Support

99,95%

Uptime

~0,6

Second response time

Debug & Trace Capabilities
Powered by NOWNodes

Debug API Methods

Get deep visibility into smart-contract execution: replay transactions, inspect gas usage, diagnose failures.

Trace API Methods

Reveal internal calls, follow transaction flows, and analyze hidden transfers inside complex smart-contract interactions.

One API. 110+ blockchains

Use Debug & Trace across an expanding list of supported networks — without switching providers.

24/7 Expert Support

Our technical team assists with integration, tuning, and network-specific questions 24/7, with clear SLA, and first responses in under 3 minutes.

Guaranteed 99,95% uptime

Reliable performance under any load — with failover nodes, global redundancy, and smart load balancing — ensuring stable Debug & Trace calls even under load.

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Everything You Need to
Build Faster and Smarter

Integrate scalable node access, real-time event notifications, and market data to power advanced blockchain data and high service.

Shared & dedicated nodes
Get instant access to 110+ blockchain RPC nodes with multiple interfaces and stable dedicated nodes — cut your costs on infrastructure management.
- Instant node spin-up by requests from our users
- Multiple API interfaces, Blockbook, Tendermint, Indexer — different types for all your needs
- Unique networks, like Ada Blockfrost, Dione, and more
- Archive nodes for historical data access
- WebSocket (WSS) support for real-time updates
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Market data
Stream low-latency crypto and fiat quotes straight into your service — keeping every trade priced in real time
- 9000+ cryptocurrencies supported
- 90+ fiat currencies
- Aggregated market rates from top exchanges for reliable data
- Historical price feeds for trend analysis and risk models
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Blockchain notification
Сoming soon
Get real-time transaction notifications across 24+ chains - Send a single request - our service instantly notifies you when the transaction confirms, forget about multiple requests.
- Covers 24+ blockchain networks
- Detects failed or canceled transactions
- Instant on-chain deposit recognition
- One request = one notification

Access Trace & Debug API from the Starter Plan

Sign up on NOWNodes and choose your plan

1. SIGN UP

2. GET API KEY

Generate API key in the dashboard

3. BUILD

Build with our API docs and start using Trace & Debug.

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Trusted by

Exodus has used NowNodes since 2022 as a cost-effective alternative to running some of our own expensive in-house nodes. The NowNodes support team has always been responsive and friendly, consistently providing quick resolutions to any issues we've encountered.

We have been working with NOWNodes from the very beginning – and through all these years the service has been impeccable. The team has been ready to meet our strenuous requirements in 100% of cases and if anything stroke our fancy, NOWNodes always delivered – no questions asked. We're planning on using NOWNodes for years to come – and we hope the company keeps growing in the future. Good job, NOWNodes!

NOWNodes has been consistently and reliably providing RPC service for 50+ of the blockchains supported by Trust Wallet for several years now. On top of the wide number of chains they already listed, the team has always been open to adapt to our specific needs and add extra components and chains when asked

NOWNodes is our esteemed partner and one of the best providers out there on the market. Their work ethic and due diligence are impeccable!

NOWNodes has provided hybrix with a high availability and quality service product for over a year now. We would recommend this API provider to anyone looking for proper RPC connections to blockchain services.

NOWNodes have been very helpful every and supportive with any questions we have had and the service is perfect.

We've used the API service of NOWNodes for over a half year now and they have been simply magnificent with their service delivery. The API calls are efficient and their support is always a DM away from resolving issues that need attention.

Running campaigns with NOWNodes has been smooth and effective. The team is responsive, collaborative, and easy to work with. Looking forward to more successful initiatives together.

Your team and all engineers from Nownodes to provide us good service, program API, and support.

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Frequently asked questions

What is Trace API and what can I use it for?

Trace API provides detailed transaction tracing: it reveals internal calls, execution paths, and hidden transfers inside a smart contract. With API tracing you can analyze complex transactions, audit contract behavior, and track API calls happening inside each execution step.

What is Debug API?

Debug API allows you to emulate and inspect a transaction before or after it’s mined.
It helps developers understand gas usage, detect execution issues, and replay transaction results.
Debug API is commonly used for smart-contract diagnostics, testing, and advanced troubleshooting.

Can I use Trace API and Debug API for free?

Yes. Simply sign up on NOWNodes, activate the Starter plan, choose up to 5 blockchains, and you’ll be able to make Debug API and API trace requests right away.
The Starter plan includes full access to Trace API, Debug API, and core API tracing features.

What if Trace API or Debug API isn’t available for the network I need?

If the required chain doesn’t currently support Trace API or Debug API, you can request it by contacting our sales team — in many cases, we may already be working on adding Track API and tracing support for that network.
If you need Debug API access urgently or expect high-volume workloads, you can request a dedicated node with any available methods enabled, including full API tracing and custom Debug API configurations.