MCP For Claude Marketplace
Ankr (Web3 Node API)

Ankr (Web3 Node API) MCP Connector for Claude

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Access high-performance Web3 RPC nodes via Ankr. Query block data, check wallet balances, and interact with smart contracts across multiple EVM chains.

32 tools Official Updated Jun 28, 2026 Official Vinkius Partner
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Connect your AI agent to Ankr's global node infrastructure and interact with blockchain data through natural language. This server provides a direct bridge to Ethereum and other EVM-compatible chains.

What you can do

  • Chain Queries — Fetch the latest block numbers and detailed block information by hash or number across supported networks.
  • Account Auditing — Check wallet balances, transaction counts (nonces), and retrieve the smart contract code at any address.
  • Transaction Analysis — Inspect transaction details and receipts, or estimate gas costs for potential on-chain operations.
  • Smart Contract Interaction — Execute eth_call to read contract states or simulate complex multi-transaction scenarios with eth_simulateV1.
  • State Inspection — Access raw storage slots with eth_getStorageAt and filter event logs with eth_getLogs for deep data analysis.

How it works

  1. Subscribe to this server
  2. Enter your Ankr JWT Token
  3. Start querying blockchain data from Claude, Cursor, or any MCP-compatible client

No more manual JSON-RPC requests or complex Postman setups. Your AI acts as a blockchain developer or data analyst.

Who is this for?

  • Web3 Developers — quickly debug smart contracts, check nonces, and verify deployments directly from the IDE.
  • DeFi Researchers — analyze on-chain state, simulate transactions, and fetch historical logs without writing custom scripts.
  • Data Analysts — retrieve real-time blockchain metrics and block data for reporting and monitoring.
web3ethereumrpc-nodeevmblockchain-api

32 tools expose this connector's capabilities to your AI agent.

ankr_getAccountBalance

Retrieves all token balances for a wallet

ankr_getBlocks

Retrieves full info for a range of blocks

ankr_getInteractions

Lists all blockchains a wallet has interacted with

ankr_getNFTHolders

Lists all holders of a specific NFT collection

ankr_getNFTMetadata

Retrieves metadata for a specific NFT

ankr_getNFTsByOwner

Retrieves all NFTs owned by an address across multiple chains

ankr_getTokenPrice

Returns the current USD price of a token

ankr_getTokenTransfers

Returns historical token transfer data

eth_blockNumber

Returns the most recent block number

eth_call

Executes a call without creating a transaction

eth_estimateGas

Estimates gas needed for a transaction

eth_getBalance

Returns the balance of an address

eth_getBlockByHash

Returns block information by hash

eth_getBlockByNumber

Returns block information by number

eth_getCode

Returns the code at a given address

eth_getLogs

Returns logs matching filter criteria

eth_getStorageAt

Returns the value from a storage position

eth_getTransactionByHash

Returns transaction details

eth_getTransactionCount

Returns the number of transactions sent from an address (nonce)

eth_getTransactionReceipt

Returns the receipt of a transaction

eth_sendRawTransaction

Submits a signed transaction to the network

eth_simulateV1

Simulates multiple blocks/transactions

getAccountInfo

Returns all info associated with a Pubkey

getBalance

Returns the lamport balance of an account

getBlockHeight

Returns the current block height

getBlock

Returns identity and transaction info for a confirmed block

getEpochInfo

Returns information about the current epoch

getLatestBlockhash

Returns the latest blockhash for transaction building

getProgramAccounts

Returns all accounts owned by a program

getTransaction

Returns details for a confirmed transaction

sendTransaction

Submits a signed transaction

simulateTransaction

Simulates a transaction to check for errors

See how to talk to your AI agent using Ankr (Web3 Node API).

What is the latest block number on Ethereum?

I've checked the Ethereum network. The most recent block number is 19,245,812.

Check the balance of address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on the 'eth' chain.

The balance for that address on Ethereum is 1,500,000,000,000,000,000 Wei (1.5 ETH).

Get the transaction receipt for hash 0x5c504ed432cb511db3b32169e5444570f9d0cad662f6e19df34ad57d57ad5 on eth.

I've retrieved the receipt. The transaction was successful, included in block 18,450,210, and used 21,000 gas.

Use the `eth_blockNumber` tool and provide the `chain_alias` (e.g., 'eth' for Ethereum). The agent will return the most recent block number recorded on that chain.

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