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MarketData API (NOWMARKET)

MarketData API API Documentation

To interact with the MarketData API blockchain — reading data, sending transactions, or executing on-chain operations — you need a stable connection to a MarketData API node. NOWNodes provides reliable NOWMARKET RPC access, offering a standardized set of methods for consistent communication with the blockchain.

Get started with MarketData API in minutes: create a free API key, choose your endpoint, and connect. Check the NOWNodes documentation for available MarketData API methods and integration examples.

Quick start

01

Get an API key

Sign up and generate a free key from the dashboard.

Get key →
02

Select environment

Mainnet or Sepolia testnet.

03

Choose an interface

RPC, WSS, Blockbook, or Trace/Debug.

04

Send a request

Call it from your application.

RPCJSON-RPCStandard RPC methods for reading chain state and broadcasting transactions.Node APIs →WSSWebSocketPersistent connections for new blocks, pending transactions, and log events as they happen.WSS API →T/DTrace & DebugStep-level execution traces for inspecting calls and diagnosing transactions.Trace & Debug API →ARCArchive modeFull historical state access beyond standard node retention.Archive nodes →MCPModel Context ProtocolThe Model Context Protocol (MCP) is an open standard that lets AI assistants call external tools through a uniform interface.MCP →

Ready to build on: NOWMARKET

Create a free API key and start sending requests in minutes.

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