Products

The Crypto APIs Product Suite

Cutting-edge blockchain tools, data and services to empower building crypto applications.

Trusted by 500+ companies
Genesis PrimePay Vault12 Hacken Xcoins
Offline Signer

Offline Signer

An MIT-licensed package that signs six chain families locally — no API call, no API key.
x402 Payments

x402 Payments

Pay for APIs, or charge for yours, in USDC stablecoin over the open x402 protocol — non-custodially.

Blockchain Events

Real-time notifications for multiple event types on top blockchains. Response under 100ms.

Block Data

Access to full transaction data on all transactions & addresses

Verify Address

AML, sanctions and fraud screening for crypto addresses across 35+ networks.

AI Compatibility

60 MCP tools, a 47-command CLI and agent skills for Claude, Cursor and n8n.

Blockchain Fees

Precise blockchain transaction fee estimates based on transaction priority

Broadcast Transactions

Broadcast and verify transactions with real-time monitoring

Address Latest

Retrieve blockchain data, balances, and transactions

Address History

Detailed blockchain history and transaction data for any address.

Contracts

Full smart contracts metadata, including token symbols & token names

Dedicated Nodes

Request your high-performance dedicated nodes on over 100+ networks, offering exceptional value and reliability.

Blockchain Utils

Address validation, encoding & cryptographic tasks optimizations

HD Wallets Management

Sync and manage HD wallets, keys and addresses

Prepare Transactions

Prepare EVM transactions, including token transfers

Transactions Data

Access to full transaction data on all transactions & addresses.

Market Data

Live crypto prices, exchange rates, supply and token contracts across protocols via one REST API.

Transaction Simulator

Test EVM transactions, optimize gas fees, and identify security flaws.

Node as a Service

Get access to our leading shared node infrastructure for top blockchains using JSON-RPC.

Infrastructure optimized for growth

35+

Networks Supported

25ms

Avg Processing Time

25,000+ rq/s

Enterprise-ready

100+ TB

of Big Data

See how it works

1. Sign up & invite your team

Get started for free, verify your account and add team members.

2. Access your Dashboard

Create API keys, manage subscription plans, track usage, and configure settings - all in one place.

3. Use your API keys

Choose an API from our docs and start integrating with our unified endpoints.

  • GET
  • POST
Start Building Talk to an expert

Crypto APIs provide a safe and reliable service with good customer support and extensive documentation that helps us access and verify relevant transaction and wallet data.

Jakub Sawczuk, Founder and CEO, AEM Algorithm,

Frequently Asked Questions

Which product do I need to read balances and transactions?

Start with Address Latest: it needs no setup and answers for roughly the last 14 days, which covers "what happened recently". For a full history you need Address History, which requires the address to be synced first and then bills per address per day for as long as it stays synced.

Do I need a node to use any of this?

No. The REST APIs answer from our infrastructure, so there is nothing to sync and nothing to operate. If you want a node of your own anyway — for raw JSON-RPC, or to isolate your throughput — Node as a Service and Dedicated Nodes are separate products.

How do I send a transaction without giving you the private key?

You do not give it to us. Derive addresses from an extended public key, watch them with a webhook, call Prepare Transactions for an unsigned transaction, sign it on your own server with the offline signer, then broadcast it. The signer is an npm package that makes no network call, and signing costs no credits.

Which product tells me when something happens on-chain?

Blockchain Events. You subscribe an address or a block event to a callback URL and we POST to it — incoming and outgoing transactions, confirmations, and mined blocks — so you are not polling for state that has not changed.