Ontology Developer Center
DISCOVERAPPLICATIONSCOMMUNITYSUPPORT
Search…
v2.5
Introduction
Discover Ontology
Getting Started
Glossary
Decentralized Identity and Data
ONT ID
DDXF
ONTOLOGY ELEMENTS
Smart Contracts
Token Protocols
Consensus Mechanism
Ontology Oracle
GUIDES & TUTORIALS
Development Guides
Integration Guides
EVM & Token Decimals Upgrade
ONTOLOGY NODE
Abstract
Node Deployment
Interacting with a Public Node
DEVELOPER TOOLS
dApp Development Framework
IDE
APIs
HTTP API
Explorer v2 API
Native Token API
ONT ID Contract API
Web3 API
OScore Open API
Rosetta Node API
DToken Contract API
DDXF
Digital Wallet
SDKs
Signing Server
COMMUNITY
Ecosystem Programs
Community Libraries
Community Events
Community Channels
Core Contributors
SUPPORT
FAQ
Contact Us
Powered By GitBook
APIs
Public APIs for data exchange
The public APIs made available by Ontology serve as communication bridges between dApps and nodes.
The APIs provide methods that can be used to fetch data from the chain using various parameters such as user ONT ID, transaction hash, block height etc.
There are two different APIs available publicly for developers to start using:
  1. 1.
    HTTP API - RPC interface, Restful interface, Websocket interface
  2. 2.
    Explorer API
Both these APIs are used to fetch data from the chain, but there are slight differences between the two, described in respective sections.
Generally speaking, it is a very tedious task for developers to run and maintain a node, but also a necessity since it is required for testing before deployment on the MainNet. Thus, to make things simpler for developers, Ontology provides public test nodes all of which use the RPC, Restful and Websocket API with default ports, thereby allowing developers to test their smart contracts and business logic.

All the nodes supportRPC, RESTful, and WebSocket APi calls, and use default port numbers.
HTTPS is supported on port 10334 of the Polaris TestNet node http://polaris1.ont.io and Ontology MainNet node http://dappnode1.ont.io.

The public TestNet nodes are:
When working on the TestNet, you'll need TestNet ONG, which can be applied for here.

The public MainNet nodes are :
A private node can also be set up on the local machine. This can be done by directly compiling and running the source code, but for the convenience of developers, Ontology provides a method to directly download and run a private node. Please follow this link to find the guide.
Follow this link to navigate to the ONT ID public API.
To find out how to deploy your own Ontology node follow this link.
DEVELOPER TOOLS - Previous
IDE
Next
HTTP API
Last modified 5mo ago
Copy link
On this page
Using public nodes
Polaris TestNet
Ontology MainNet