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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.

agent ready

Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.

Kin Score

API Evangelist profiles ankr the way a machine reads it — 68 machine-readable artifacts across 9 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — ankr scores 69.0/100 (strong), with a separate agent-readiness read of 54/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 69.0/100 · strong
Contract Quality 22.0 / 25
Developer Ergonomics 11.3 / 20
Commercial Clarity 14.2 / 20
Operational Transparency 4.8 / 13
Governance 7.9 / 12
Discoverability 8.8 / 10
Agent readiness — 54/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile ankr

Each block below is one kind of artifact we hold for ankr. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 9

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

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...

ankr EVM API

Standard Ethereum JSON-RPC envelope shared by every EVM chain.

ankr Metrics API

Liquid staking pool statistics (TVL, APR, holders, supply).

ankr NFT API

NFT methods — ownership, metadata, holders, and transfer history.

ankr Query API

Query methods — blockchain statistics, blocks, logs, transactions, interactions.

ankr Ratio API

Trustless exchange ratio between native and liquid staking tokens.

ankr Tasks API

Time-based and event-triggered automation tasks.

ankr Token API

Token methods — balances, prices, holders, currencies, and transfers.

ankr Validators API

Validator metadata, unbond times, reward release windows.

Scroll within the panel for all 9 ·

Postman Collections 4

A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.

Ready-to-run Postman collections for exercising this provider's APIs.

Open Collections 4

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Ankr Advanced API

OPEN COLLECTION

Ankr Liquid Staking API

OPEN COLLECTION

Arazzo Workflows 9

Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.

Multi-step API workflows described with the Arazzo specification.

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

Scroll within the panel for all 9 ·

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Ankr Plans Pricing

4 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Ankr Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

Cost, billing, and metering signals for API financial operations.

Ankr Finops

FINOPS

Features 23

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

Notable capabilities this provider offers.

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

Scroll within the panel for all 23 ·

Event Specifications 2

Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.

AsyncAPI definitions for this provider's event-driven and streaming APIs.

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 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Ankr Context

25 classes · 5 properties

JSON-LD

Spectral Rules 3

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

ankr API Rules

8 rules · 1 errors · 7 warnings

SPECTRAL

ankr API Rules

5 rules · 3 warnings

SPECTRAL

ankr API Rules

5 rules · 1 errors · 3 warnings

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

Standalone JSON Schema definitions for this provider's data models.

Ankr Account Balance

2 properties

JSON SCHEMA

Ankr NFT Asset

10 properties

JSON SCHEMA

Ankr Liquid Staking Metrics

6 properties

JSON SCHEMA

JSON Structure 1

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Ankr Account Balance Structure

0 properties

JSON STRUCTURE

Examples 3

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Ankr Authentication

apiKey/http · 2 schemes

SECURITY

Ankr Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Ankr Agentic Access

26 operations · 20 acting

26 operations · 20 acting

AGENTIC

Resources

Every other property we hold for ankr — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 2

Portal, sign-up, and the first successful call

Documentation 3

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Access & Security 2

Authentication, authorization, and security posture

Operate 4

Status, limits, changes, and where to get help

Company 2

The organization behind the API

Other 3

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/ankr · machine-readable index on apis.io