ankr

Ankr is a Web3 infrastructure provider whose multichain RPC, Advanced API, liquid staking, contract automation, and Rollup-as-a-Service products serve developers, exchanges, and enterprises across 80+ blockchains. The Node API exposes JSON-RPC and WebSocket endpoints at rpc.ankr.com/{chain}; the Advanced API (AAPI) layers an indexed query surface across 19 EVM mainnets for NFT, token, and historical-data reads. Ankr also operates liquid staking pools (ankrETH, ankrBNB, ankrPOL, ankrAVAX, ankrFTM, ankrDOT, ankrFLOW), a contract automation service on BNB Smart Chain, and an enterprise Rollup-as-a-Service practice that supports OP Stack, Polygon CDK, and Arbitrum Orbit variants. Infrastructure runs as a global DePIN of bare-metal nodes in 30+ regions serving roughly 8 billion daily RPC requests.

5 APIs 23 Features

APIs

Ankr RPC Service (Node API)

Ankr's Node API exposes standard JSON-RPC endpoints (HTTPS and WebSocket) for 80+ public blockchains at rpc.ankr.com/{chain}. EVM chains share the Ethereum JSON-RPC envelope; no...

Ankr Advanced API

The Advanced API (AAPI) is Ankr's indexed JSON-RPC surface that optimizes, caches, and aggregates data across 19 EVM mainnets and 7 testnets. Methods are grouped into NFT (ankr_...

Ankr Liquid Staking API

Ankr's Liquid Staking developer surface — a RESTful metrics API plus on-chain Smart Contract APIs across Avalanche, Binance Smart Chain, Ethereum, Fantom, and Polygon. Supported...

Ankr Contract Automation API

Ankr Contract Automation executes deployed smart-contract functions based on time-based (CRON) or event-driven (IAutomateCompatible) triggers. As of May 2026 the service support...

AnkrScan Block Explorer

AnkrScan is Ankr's multi-chain block explorer covering EVM and non-EVM networks. It is a hosted UI consuming Ankr's Node API and Advanced API and does not currently publish a pu...

Collections

Ankr Advanced API

POSTMAN

Ankr Contract Automation API

POSTMAN

Ankr RPC Service (Node API)

POSTMAN

Ankr Liquid Staking API

POSTMAN

Ankr Advanced API

OPEN

Ankr Contract Automation API

OPEN

Ankr RPC Service (Node API)

OPEN

Ankr Liquid Staking API

OPEN

Arazzo Workflows

Ankr Block And Log Inspection

Read full blocks for a range, then pull event logs from the same range.

ARAZZO

Ankr Chain Overview

Read a chain's aggregate stats, then its supported currency catalog.

ARAZZO

Ankr NFT Collection Audit

Pull a collection's holders and then its transfer history.

ARAZZO

Ankr Wallet NFT Inventory

List the NFTs owned by a wallet, then enrich one with full metadata.

ARAZZO

Ankr Token Holder Distribution

Count an ERC-20 token's holders, then list them and read its price.

ARAZZO

Ankr Token Price And History

Read a token's current price, then its historical price series.

ARAZZO

Ankr Transaction Deep Dive

Pull a wallet's transactions, then decode the most recent one in full.

ARAZZO

Ankr Wallet Cross-Chain Activity

Discover the chains a wallet uses, then pull its transaction history.

ARAZZO

Ankr Wallet Portfolio Snapshot

Read a wallet's token balances and then its recent ERC-20 transfer history.

ARAZZO

Pricing Plans

Ankr Plans Pricing

4 plans

PLANS

Rate Limits

Ankr Rate Limits

5 limits

RATE LIMITS

FinOps

Ankr Finops

FINOPS

Features

80+ blockchain networks behind a single multichain RPC surface (rpc.ankr.com/{chain})

Average response time of 56ms with claimed 99.99% uptime across a 30+ region DePIN

8 billion daily RPC requests served as of May 2026

Public Plan free with anonymous IP-scoped throttling — production should use Premium

Premium Plan multiplies Node API throughput x50 and Advanced API x30

WebSocket (WSS) endpoints, archive access, IP whitelisting, and multi-project statistics

Advanced API — indexed JSON-RPC over 19 EVM mainnets exposing NFT, Token, and Query methods

ankr_getAccountBalance returns native + ERC-20 balances across multiple chains in one call

ankr_getNFTsByOwner / ankr_getNFTMetadata / ankr_getNFTHolders / ankr_getNftTransfers

ankr_getTokenPrice and ankr_getTokenPriceHistory for on-chain pricing without third-party

ankr_getLogs and ankr_getTransactionsByAddress for indexer-grade history reads

Liquid staking on 7+ chains via ankrETH, ankrBNB, ankrPOL, ankrAVAX, ankrFTM, ankrDOT, ankrFLOW

Liquid Staking RESTful metrics API (https://api.staking.ankr.com/v1.0/metrics)

Trustless ratio oracles and PancakeSwap price oracle for ankr* tokens

Smart Contract Automation on BNB Smart Chain with CRON + event triggers

Rollup-as-a-Service (RaaS) — OP Stack, Polygon CDK, Arbitrum Orbit and custom appchains

Bitcoin Secured Infrastructure for chains anchoring security to Bitcoin

Enterprise DVN infrastructure on LayerZero for cross-chain messaging

Recent RPC launches — HyperEVM, Unichain, AB Chain, Kite (AI Payment Blockchain)

Powers AI / blockchain integrations including ChainGPT AI Hub V2 (March 2026)

SDKs — ankr.js (TypeScript), ankr-python-sdk, Mirage Unity SDK, Mirage Unreal SDK

AnkrScan multi-chain block explorer at ankrscan.io

Open-source Erigon and BSC-Erigon forks operated for archive workloads

Event Specifications

Ankr RPC Service — WebSocket Subscriptions

AsyncAPI description of Ankr's WebSocket JSON-RPC surface for blockchain subscriptions. Ankr exposes a single multichain WSS endpoint at `wss://rpc.ankr.com/{chain_slug}/{apiKey...

ASYNCAPI

Review

ASYNCAPI

Semantic Vocabularies

Ankr Context

25 classes · 5 properties

JSON-LD

API Governance Rules

ankr API Rules

5 rules · 1 errors 3 warnings

SPECTRAL

JSON Structure

Ankr Account Balance Structure

0 properties

JSON STRUCTURE

Example Payloads

Ankr Eth Rpc Call Example

3 fields

EXAMPLE

Ankr Get Account Balance Example

2 fields

EXAMPLE

Ankr Get Nfts By Owner Example

2 fields

EXAMPLE

Resources

PostmanWorkspace

PostmanWorkspace

Documentation

GitHubOrganization

GitHubOrganization

BlockExplorer

Documentation

Documentation

TermsOfService

PrivacyPolicy

SpectralRules

Sources

opencollection: 1.0.0
info:
  name: Ankr Liquid Staking API
  version: 1.0.0
items:
- info:
    name: Metrics
    type: folder
  items:
  - info:
      name: Ankr Get Staking Metrics
      type: http
    http:
      method: GET
      url: https://api.staking.ankr.com/v1.0/metrics
    docs: Returns Ankr Liquid Staking metrics across all supported tokens.
  - info:
      name: Ankr Get Staking Metrics By Token
      type: http
    http:
      method: GET
      url: https://api.staking.ankr.com/v1.0/metrics/:token
      params:
      - name: token
        value: ''
        type: path
        description: Liquid staking token symbol.
    docs: Returns staking metrics for a single liquid staking token.
- info:
    name: Ratio
    type: folder
  items:
  - info:
      name: Ankr Get Trustless Ratio
      type: http
    http:
      method: GET
      url: https://api.staking.ankr.com/v1.0/ratio/:token
      params:
      - name: token
        value: ''
        type: path
        description: Liquid staking token symbol.
    docs: Returns the trustless exchange ratio between the native asset and its liquid staking token.
- info:
    name: Validators
    type: folder
  items:
  - info:
      name: Ankr Get Validators
      type: http
    http:
      method: GET
      url: https://api.staking.ankr.com/v1.0/validators/:chain
      params:
      - name: chain
        value: ''
        type: path
    docs: Returns Ankr-operated validators on a given chain, including unbond windows and reward release schedules.
bundled: true