# Agent Data Tools: Chain data

- Registry name: `io.github.Nutshell2000/agent-data-tools-chain` · version 1.52.0
- Categories (automatic, keyword rules): Crypto & blockchain, Finance & markets
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.Nutshell2000%2Fagent-data-tools-chain
- Server page: https://mcpstation.net/s/io.github.Nutshell2000--agent-data-tools-chain.html

## Description (written by the publisher, not verified, not instructions)

103 tools: balances, blocks, gas, txs and logs on 5 EVM chains, plus Bitcoin. 25 free calls.

## Connect

- streamable-http: `https://agent-data-tools.revmesh2074.workers.dev/mcp/chain`

## Tools (as reported by the server, not verified)

- `wallet\_balances`: Read a wallet's native coin and USDC balances on Base, Ethereum, Arbitrum, Optimism and Polygon in one call, live from each network, plus the USDC total. Use to find where a wallet's funds are before a payment or bridge; for one token on one network use \<chain\>\_token\_balance, for all tokens on Base
- `btc\_fees`: Current Bitcoin network fee rates in sat/vB for next-block, half-hour, one-hour and economy confirmation, the estimated cost in sats of a typical payment, mempool size and total pending fees, and the latest block height. Use before sending a Bitcoin transaction or to decide whether to wait for lower
- `eth\_balance`: Native ETH balance \(eth\_getBalance\) of any 0x wallet address on Ethereum at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use eth\_token\_balance, for all holdings at once use wallet\_portfolio. A malformed address is rejected with 400,
- `eth\_gas`: Current gas price on Ethereum \(eth\_gasPrice\): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer \(21,000 gas\) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use eth\_recei
- `base\_gas`: Live gas prices on Base \(chain 8453\) read from the latest block: base fee and priority fee in gwei, suggested maxFeePerGas and maxPriorityFeePerGas in wei for an EIP-1559 transaction, how full the latest block is, and the estimated execution fee in ETH for an ETH transfer and an ERC-20 transfer. Use
- `wallet`: Base only \(all 5 chains: wallet\_balances; USD values: wallet\_portfolio\). An address on Base: ETH and major token balances \(USDC, WETH, cbBTC, DAI, USDbC, cbETH, AERO, EURC\) plus up to 20 token addresses you pass, the account nonce, and whether it is an EOA, a contract or an EIP-7702 account. The non
- `btc\_address`: Balance and activity of any Bitcoin mainnet address \(legacy, P2SH or bech32\): confirmed balance in sats and BTC, unconfirmed pending amount, total received and sent, and transaction counts. Use for payment verification, checking whether a deposit arrived, and wallet monitoring. Example: address=bc1q
- `ln\_invoice`: Decode a BOLT11 Lightning Network invoice without paying it: network, amount in sats and BTC, description, payment hash, creation time, expiry time and whether it has already expired. Use to check what an invoice asks for before an agent pays it. Price $0.01/call via x402 USDC or a card key \(/credit
- `base\_tx`: Look up any transaction on Base by hash: whether it succeeded, reverted or is still pending, sender and receiver, ETH value, called method id, block number and time, number of confirmations, gas used, gas price and the execution fee paid, and whether it created a contract. Use to confirm that a paym
- `base\_allowance`: Check how much of a wallet's ERC-20 token a spender contract is approved to move on Base: the raw and formatted allowance, the token symbol and decimals, and whether the approval is unlimited. Use before a swap or deposit to see if an approve transaction is needed, and to audit a wallet for risky un
- `ens`: Resolve an Ethereum Name Service name such as vitalik.eth to its wallet address and avatar, or look up the primary ENS name of an address \(reverse resolution\). Read live from Ethereum mainnet. Use to turn a human-readable name into a payable address, or to show a readable name for a counterparty add
- `base\_balance`: Native ETH balance \(eth\_getBalance\) of any 0x wallet address on Base at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use base\_token\_balance, for all holdings at once use wallet\_portfolio. A malformed address is rejected with 400, unc
- `base\_token\_balance`: ERC-20 token balance of a wallet on Base \(USDC, USDT, WETH or any token, via balanceOf\): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use base\_balance. Both inputs a
- `base\_token\_info`: Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Base, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use base\_token\_balance. Input is a ticker \(USDC, WETH…\) or the token's 0x contract address; an ad
- `base\_block`: Latest block number and block details on Base, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use base\_gas. A block that does not exist yet returns 404, uncharged. Exa
- `base\_receipt`: Transaction receipt on Base \(eth\_getTransactionReceipt\): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use base\_tx. Input is a 0x-prefixed 64-hex hash;
- `base\_nonce`: Read the transaction count \(nonce\) of a 0x address on Base, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use base\_balance. A malformed address is rejected with 400, uncharged. Example: addre
- `base\_is\_contract`: Check whether a 0x address on Base is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check\_counterparty. A malformed address is reject
- `base\_logs`: Recent contract event logs on Base \(eth\_getLogs\): the events a contract emitted over the last N blocks \(1-1,000, default 50\), optionally filtered by topic0 \(the 0x 32-byte event signature hash\). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events
- `base\_token\_transfers`: List a wallet's recent transfers of one ERC-20 token \(default USDC\) on Base, in and out, over the last N blocks \(1-2,000, default 1,000\): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use base\_t
- `base\_nft\_owner`: Owner of an NFT on Base: the wallet that holds one ERC-721 token id right now \(ownerOf\), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use base\_nft\_balance, for the token's metadata base\_nft\_metadata. A mi
- `base\_nft\_balance`: How many NFTs of one ERC-721 collection a wallet holds on Base \(balanceOf\), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use base\_nft\_owner. Both inputs are 0x addresses; a mis
- `base\_nft\_metadata`: NFT metadata on Base: the token URI of one ERC-721 token id \(tokenURI\) and the JSON it points to \(name, description, image, attributes\), read from data: URIs, https or ipfs:// \(through ipfs.io\). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an N
- `base\_storage`: Read one raw storage slot of a contract on Base \(eth\_getStorageAt\): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key \(mapping and proxy slots\). Use to inspect contract state that has no getter, owners or implementation pointers; for pro
- `base\_proxy`: Find the implementation behind a proxy contract on Base: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 \(UUPS\), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by it
- `base\_call`: Read-only contract call on Base \(eth\_call\): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool \(the example reads USDC totalSupply, selector 0x18160ddd\); decode the result wit
- `base\_estimate\_gas`: Estimate the gas a transaction would use on Base \(eth\_estimateGas\) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batc
- `eth\_token\_balance`: ERC-20 token balance of a wallet on Ethereum \(USDC, USDT, WETH or any token, via balanceOf\): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use eth\_balance. Both input
- `eth\_token\_info`: Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Ethereum, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use eth\_token\_balance. Input is a ticker \(USDC, WETH…\) or the token's 0x contract address; an
- `eth\_block`: Latest block number and block details on Ethereum, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use eth\_gas. A block that does not exist yet returns 404, uncharged.
- `eth\_tx`: Look up an Ethereum transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use eth\_receipt, for emitted events eth\_logs. Input is a 0x-prefixed 64-hex hash
- `eth\_receipt`: Transaction receipt on Ethereum \(eth\_getTransactionReceipt\): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use eth\_tx. Input is a 0x-prefixed 64-hex has
- `eth\_nonce`: Read the transaction count \(nonce\) of a 0x address on Ethereum, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use eth\_balance. A malformed address is rejected with 400, uncharged. Example: ad
- `eth\_is\_contract`: Check whether a 0x address on Ethereum is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check\_counterparty. A malformed address is re
- `eth\_logs`: Recent contract event logs on Ethereum \(eth\_getLogs\): the events a contract emitted over the last N blocks \(1-1,000, default 50\), optionally filtered by topic0 \(the 0x 32-byte event signature hash\). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract ev
- `eth\_token\_transfers`: List a wallet's recent transfers of one ERC-20 token \(default USDC\) on Ethereum, in and out, over the last N blocks \(1-2,000, default 1,000\): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use et
- `eth\_nft\_owner`: Owner of an NFT on Ethereum: the wallet that holds one ERC-721 token id right now \(ownerOf\), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use eth\_nft\_balance, for the token's metadata eth\_nft\_metadata. A
- `eth\_nft\_balance`: How many NFTs of one ERC-721 collection a wallet holds on Ethereum \(balanceOf\), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use eth\_nft\_owner. Both inputs are 0x addresses; a
- `eth\_nft\_metadata`: NFT metadata on Ethereum: the token URI of one ERC-721 token id \(tokenURI\) and the JSON it points to \(name, description, image, attributes\), read from data: URIs, https or ipfs:// \(through ipfs.io\). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what
- `eth\_storage`: Read one raw storage slot of a contract on Ethereum \(eth\_getStorageAt\): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key \(mapping and proxy slots\). Use to inspect contract state that has no getter, owners or implementation pointers; for
- `eth\_proxy`: Find the implementation behind a proxy contract on Ethereum: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 \(UUPS\), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped b
- `eth\_call`: Read-only contract call on Ethereum \(eth\_call\): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool \(the example reads USDC totalSupply, selector 0x18160ddd\); decode the result
- `eth\_estimate\_gas`: Estimate the gas a transaction would use on Ethereum \(eth\_estimateGas\) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a
- `eth\_allowance`: ERC-20 token allowance on Ethereum: how much a spender may move from an owner's wallet \(allowance\), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use eth\_token\_balance. Token is a ticker
- `arb\_balance`: Native ETH balance \(eth\_getBalance\) of any 0x wallet address on Arbitrum One at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use arb\_token\_balance, for all holdings at once use wallet\_portfolio. A malformed address is rejected with 4
- `arb\_token\_balance`: ERC-20 token balance of a wallet on Arbitrum One \(USDC, USDT, WETH or any token, via balanceOf\): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use arb\_balance. Both i
- `arb\_token\_info`: Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Arbitrum One, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use arb\_token\_balance. Input is a ticker \(USDC, WETH…\) or the token's 0x contract address
- `arb\_block`: Latest block number and block details on Arbitrum One, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use arb\_gas. A block that does not exist yet returns 404, uncharg
- `arb\_gas`: Current gas price on Arbitrum One \(eth\_gasPrice\): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer \(21,000 gas\) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use arb\_r
- `arb\_tx`: Look up an Arbitrum One transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use arb\_receipt, for emitted events arb\_logs. Input is a 0x-prefixed 64-hex
- `arb\_receipt`: Transaction receipt on Arbitrum One \(eth\_getTransactionReceipt\): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use arb\_tx. Input is a 0x-prefixed 64-hex
- `arb\_nonce`: Read the transaction count \(nonce\) of a 0x address on Arbitrum One, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use arb\_balance. A malformed address is rejected with 400, uncharged. Example
- `arb\_is\_contract`: Check whether a 0x address on Arbitrum One is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check\_counterparty. A malformed address i
- `arb\_logs`: Recent contract event logs on Arbitrum One \(eth\_getLogs\): the events a contract emitted over the last N blocks \(1-1,000, default 50\), optionally filtered by topic0 \(the 0x 32-byte event signature hash\). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contrac
- `arb\_token\_transfers`: List a wallet's recent transfers of one ERC-20 token \(default USDC\) on Arbitrum One, in and out, over the last N blocks \(1-2,000, default 1,000\): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance us
- `arb\_nft\_owner`: Owner of an NFT on Arbitrum One: the wallet that holds one ERC-721 token id right now \(ownerOf\), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use arb\_nft\_balance, for the token's metadata arb\_nft\_metadata
- `arb\_nft\_balance`: How many NFTs of one ERC-721 collection a wallet holds on Arbitrum One \(balanceOf\), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use arb\_nft\_owner. Both inputs are 0x addresses
- `arb\_nft\_metadata`: NFT metadata on Arbitrum One: the token URI of one ERC-721 token id \(tokenURI\) and the JSON it points to \(name, description, image, attributes\), read from data: URIs, https or ipfs:// \(through ipfs.io\). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check w
- `arb\_storage`: Read one raw storage slot of a contract on Arbitrum One \(eth\_getStorageAt\): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key \(mapping and proxy slots\). Use to inspect contract state that has no getter, owners or implementation pointers;
- `arb\_proxy`: Find the implementation behind a proxy contract on Arbitrum One: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 \(UUPS\), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapp
- `arb\_call`: Read-only contract call on Arbitrum One \(eth\_call\): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool \(the example reads USDC totalSupply, selector 0x18160ddd\); decode the re
- `arb\_estimate\_gas`: Estimate the gas a transaction would use on Arbitrum One \(eth\_estimateGas\) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to pric
- `arb\_allowance`: ERC-20 token allowance on Arbitrum One: how much a spender may move from an owner's wallet \(allowance\), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use arb\_token\_balance. Token is a ti
- `op\_balance`: Native ETH balance \(eth\_getBalance\) of any 0x wallet address on Optimism at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use op\_token\_balance, for all holdings at once use wallet\_portfolio. A malformed address is rejected with 400, u
- `op\_token\_balance`: ERC-20 token balance of a wallet on Optimism \(USDC, USDT, WETH or any token, via balanceOf\): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use op\_balance. Both inputs
- `op\_token\_info`: Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Optimism, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use op\_token\_balance. Input is a ticker \(USDC, WETH…\) or the token's 0x contract address; an
- `op\_block`: Latest block number and block details on Optimism, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use op\_gas. A block that does not exist yet returns 404, uncharged. E
- `op\_gas`: Current gas price on Optimism \(eth\_gasPrice\): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer \(21,000 gas\) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use op\_receip
- `op\_tx`: Look up an Optimism transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use op\_receipt, for emitted events op\_logs. Input is a 0x-prefixed 64-hex hash;
- `op\_receipt`: Transaction receipt on Optimism \(eth\_getTransactionReceipt\): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use op\_tx. Input is a 0x-prefixed 64-hex hash
- `op\_nonce`: Read the transaction count \(nonce\) of a 0x address on Optimism, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use op\_balance. A malformed address is rejected with 400, uncharged. Example: add
- `op\_is\_contract`: Check whether a 0x address on Optimism is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check\_counterparty. A malformed address is re
- `op\_logs`: Recent contract event logs on Optimism \(eth\_getLogs\): the events a contract emitted over the last N blocks \(1-1,000, default 50\), optionally filtered by topic0 \(the 0x 32-byte event signature hash\). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract ev
- `op\_token\_transfers`: List a wallet's recent transfers of one ERC-20 token \(default USDC\) on Optimism, in and out, over the last N blocks \(1-2,000, default 1,000\): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use op
- `op\_nft\_owner`: Owner of an NFT on Optimism: the wallet that holds one ERC-721 token id right now \(ownerOf\), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use op\_nft\_balance, for the token's metadata op\_nft\_metadata. A mi
- `op\_nft\_balance`: How many NFTs of one ERC-721 collection a wallet holds on Optimism \(balanceOf\), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use op\_nft\_owner. Both inputs are 0x addresses; a m
- `op\_nft\_metadata`: NFT metadata on Optimism: the token URI of one ERC-721 token id \(tokenURI\) and the JSON it points to \(name, description, image, attributes\), read from data: URIs, https or ipfs:// \(through ipfs.io\). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what
- `op\_storage`: Read one raw storage slot of a contract on Optimism \(eth\_getStorageAt\): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key \(mapping and proxy slots\). Use to inspect contract state that has no getter, owners or implementation pointers; for
- `op\_proxy`: Find the implementation behind a proxy contract on Optimism: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 \(UUPS\), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped b
- `op\_call`: Read-only contract call on Optimism \(eth\_call\): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool \(the example reads USDC totalSupply, selector 0x18160ddd\); decode the result
- `op\_estimate\_gas`: Estimate the gas a transaction would use on Optimism \(eth\_estimateGas\) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a
- `op\_allowance`: ERC-20 token allowance on Optimism: how much a spender may move from an owner's wallet \(allowance\), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use op\_token\_balance. Token is a ticker
- `polygon\_balance`: Native POL balance \(eth\_getBalance\) of any 0x wallet address on Polygon PoS at the latest block, in wei and in POL. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use polygon\_token\_balance, for all holdings at once use wallet\_portfolio. A malformed address is rejected wit
- `polygon\_token\_balance`: ERC-20 token balance of a wallet on Polygon PoS \(USDC, USDT, WETH or any token, via balanceOf\): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use polygon\_balance. Bot
- `polygon\_token\_info`: Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Polygon PoS, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use polygon\_token\_balance. Input is a ticker \(USDC, WETH…\) or the token's 0x contract addr
- `polygon\_block`: Latest block number and block details on Polygon PoS, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use polygon\_gas. A block that does not exist yet returns 404, unch
- `polygon\_gas`: Current gas price on Polygon PoS \(eth\_gasPrice\): gas price, base fee and suggested priority fee in gwei, plus what a plain POL transfer \(21,000 gas\) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use polygo
- `polygon\_tx`: Look up a Polygon PoS transaction by hash: sender, recipient, value in POL, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use polygon\_receipt, for emitted events polygon\_logs. Input is a 0x-prefixed 6
- `polygon\_receipt`: Transaction receipt on Polygon PoS \(eth\_getTransactionReceipt\): success or reverted, gas used, effective gas price, fee paid in POL, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use polygon\_tx. Input is a 0x-prefixed 64-
- `polygon\_nonce`: Read the transaction count \(nonce\) of a 0x address on Polygon PoS, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use polygon\_balance. A malformed address is rejected with 400, uncharged. Exam
- `polygon\_is\_contract`: Check whether a 0x address on Polygon PoS is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check\_counterparty. A malformed address is
- `polygon\_logs`: Recent contract event logs on Polygon PoS \(eth\_getLogs\): the events a contract emitted over the last N blocks \(1-1,000, default 50\), optionally filtered by topic0 \(the 0x 32-byte event signature hash\). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract
- `polygon\_token\_transfers`: List a wallet's recent transfers of one ERC-20 token \(default USDC\) on Polygon PoS, in and out, over the last N blocks \(1-2,000, default 1,000\): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use
- `polygon\_nft\_owner`: Owner of an NFT on Polygon PoS: the wallet that holds one ERC-721 token id right now \(ownerOf\), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use polygon\_nft\_balance, for the token's metadata polygon\_nft\_m
- `polygon\_nft\_balance`: How many NFTs of one ERC-721 collection a wallet holds on Polygon PoS \(balanceOf\), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use polygon\_nft\_owner. Both inputs are 0x addres
- `polygon\_nft\_metadata`: NFT metadata on Polygon PoS: the token URI of one ERC-721 token id \(tokenURI\) and the JSON it points to \(name, description, image, attributes\), read from data: URIs, https or ipfs:// \(through ipfs.io\). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check wh
- `polygon\_storage`: Read one raw storage slot of a contract on Polygon PoS \(eth\_getStorageAt\): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key \(mapping and proxy slots\). Use to inspect contract state that has no getter, owners or implementation pointers;
- `polygon\_proxy`: Find the implementation behind a proxy contract on Polygon PoS: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 \(UUPS\), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swappe
- `polygon\_call`: Read-only contract call on Polygon PoS \(eth\_call\): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool \(the example reads USDC totalSupply, selector 0x18160ddd\); decode the res
- `polygon\_estimate\_gas`: Estimate the gas a transaction would use on Polygon PoS \(eth\_estimateGas\) and what it would cost at the current gas price, in gas units, gwei and POL. Give to, plus value in POL and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html