blockchain-protocol-intelligence

Ethereum chain ID (EIP-155) via eth_chainId - confirm which chain a network is on

Ethereum network info - chain ID, block height, and gas price in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice)

Fetch an Ethereum block header and transaction hashes by number, tag, or hex via eth_getBlockByNumber

Fetch an Ethereum block header and transaction hashes by number, tag, or hex via eth_getBlockByNumber

Check if an Ethereum address is a contract via eth_getCode - returns deployed bytecode

Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent) via eth_getStorageAt - returns the implementation address behind a proxy

Contract introspection via eth_call - name, symbol, decimals, and ERC20/721/1155 interface support

Executes search queries and returns results across indexed blockchain data or documentation.

Get paginated crypto funding rounds with investors, stage, and raised amounts.

Smart contract verification and security analysis on Ethereum Base BSC Arbitrum Polygon

Decode an EVM smart contract. Pass chain (ethereum, base, polygon, arbitrum, optimism, bsc, avalanche) + address; returns whether the contract is source-verified (Sourcify), its name/compiler/language, whether it is a proxy and its implementation address, and human-readable function and event signatures from the ABI. Optionally pass selector (a 0x 4-byte function selector) to decode what it calls — resolved from the contract's own ABI when verified, otherwise from the public 4byte directory. Pairs with crypto.tx (which gives a `to` address + calldata): turn an opaque contract + selector into "what is this and what does it do." Free, keyless.

Validate a cryptocurrency address with full checksum verification (not just regex). Returns {chain, address, valid, canonical, format, reason}. Chains: btc (P2PKH, P2SH, Bech32 SegWit v0, Taproot Bech32m), eth (full EIP-55 checksum; non-checksummed flagged), sol (Ed25519 32-byte Base58), ltc (Base58Check L.../M.../3... + ltc1 Bech32), trx (T-prefix Base58Check 0x41), xrp (r-prefix custom Base58), bch (legacy Base58Check + bitcoincash:q... CashAddr). Catches typos via cryptographic checksum; canonical field returns the checksummed/lowercased form.

Transaction status by hash and chain from a block explorer behind an API key: receipt success or failure, execution error flag and error description. For confirming and debugging transactions. transaction status, tx receipt, did tx succeed, execution error, tx confirmation

List the 100+ blockchain networks supported by the on-chain DEX endpoints (via GeckoTerminal, free/keyless). Each entry has the network slug to use with crypto.dex-pools / dex-ohlcv / dex-search / token-info, its display name, and CoinGecko asset-platform id. Call this to discover valid network slugs.

Check if a smart contract's source code is verified on Etherscan. Returns compiler version, license type, proxy status, and contract name. Unverified contracts are a red flag for token safety. Supports 60+ EVM chains.

The current chain tip (latest block height) via eth_blockNumber, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The freshness read settlement, indexing and trading agents poll to know where the chain is. Live public RPC; one paid call at $0.001.

The EIP-155 chain ID for any supported network via eth_chainId — the read multi-chain agents make to confirm which chain an RPC is on before signing. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; undercuts onesource (Ethereum-only) at $0.001 on 6 chains.

The EIP-155 chain ID for any supported network via eth_chainId — the read multi-chain agents make to confirm which chain an RPC is on before signing. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; undercuts onesource (Ethereum-only) at $0.001 on 6 chains.

Is an address a smart contract or a regular wallet (EOA)? Returns whether deployed bytecode exists and its size via eth_getCode, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The safety/identity read wallet, payment and trading agents make before interacting with an address. Live public RPC; one paid call at $0.001.

Is an address a smart contract or a regular wallet (EOA)? Returns whether deployed bytecode exists and its size via eth_getCode, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The safety/identity read wallet, payment and trading agents make before interacting with an address. Live public RPC; one paid call at $0.001.

The current chain tip (latest block height) via eth_blockNumber, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The freshness read settlement, indexing and trading agents poll to know where the chain is. Live public RPC; one paid call at $0.001.

OFAC / FATF / JFSA sanctions screening for any blockchain address. Returns hit list with sanction list source, designation date, and program code.

DeFi protocols with TVL by DefiLlama — the full list of tracked protocols with current total-value-locked, chain and category.

DeFi protocol detail by DefiLlama — full historical TVL plus per-chain and per-token breakdowns for one protocol by slug.