Mint Intel: Base chain data

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Base URLhttps://mintintel.35-171-220-195.sslip.io/v1

• GET/base/balance/:address—No price listedNative ETH balance of any Base address (wei + ETH, latest block) via eth_getBalance.
• GET/sol/inflation—No price listedCurrent Solana inflation (total / validator / foundation), the inflation schedule (initial, terminal, taper), total SOL supply, active stake, staked % of supply and an estimated gross staking APR (validator inflation / staked share). Cached <=10 min.
• GET/base/block/:block—No price listedBase block header by number, hex or tag (latest / finalized / safe) via eth_getBlockByNumber - hash, parent, timestamp and age, fee recipient, gas used/limit and utilization, base fee, tx count and the first 25 tx hashes. Future block -> 404, not charged.
• GET/eth/network-info—No price listedEthereum network info - chain ID, block height, chain head age, gas price, base fee, priority fee, block gas used/limit and RPC client version in one batched RPC call (eth_chainId + eth_getBlockByNumber + eth_gasPrice + eth_maxPriorityFeePerGas).
• GET/sol/token-meta/:mint—No price listedOn-chain metadata of a Solana token mint: name, symbol, uri, update authority and mutability from the Token-2022 metadata extension or the Metaplex metadata account (seller fee, creators, token standard, collection), plus decimals and program. Not a mint -> 404, not charged.
• GET/eth/call—No price listedSimulate a read-only Ethereum contract call via eth_call - nothing is sent (?to=&data=, optional from, value, block): raw return data, first words, uint / address / string decodings, or the revert reason.
• GET/sol/recent-sigs/:addr—No price listedLatest transaction signatures touching a Solana address (newest first): slot, time, success/err, memo, confirmation status. ?limit=1..25.
• GET/eth/portfolio/:address—No price listedLive Ethereum wallet balance - native ETH plus up to 20 ERC-20 balances (default: major tokens such as USDC, WETH, USDT, WBTC, stETH; or caller-supplied ?tokens=) in one bounded JSON-RPC batch (eth_getBalance + balanceOf).
• GET/eth/token/:token—No price listedERC-20 token metadata and total supply on Ethereum via eth_call: name, symbol, decimals and totalSupply (raw + decimal-adjusted) in one batch. Not a token -> 404, not charged.
• GET/base/proxy/:address—No price listedDetect upgradeable proxies on Base via eth_getStorageAt - EIP-1967 (transparent, UUPS, beacon), legacy OpenZeppelin (zos), EIP-1822, Safe, EIP-1167 clones and EIP-7702 delegation - and return the implementation, admin and beacon addresses behind the proxy.
• GET/sol/ata/:owner/:mint—No price listedDerives the associated token account for owner + mint (SPL and Token-2022 candidates), reports which program the mint uses, whether the ATA exists and its balance. Saves a create-ATA round trip.
• GET/eth/code/:address—No price listedIs a Ethereum address a contract? eth_getCode: code size, keccak code hash, EOA vs contract, EIP-7702 delegated EOA (and its delegate), EIP-1167 minimal-proxy target, bytecode prefix; ?full=1 returns the whole deployed bytecode.
• GET/sol/account/:addr—No price listedAccount info for any Solana address: exists, lamports/SOL, owner program (+label), executable, data length, on-curve (wallet vs PDA), kind (wallet / program / spl-token:mint / spl-token:account ...) and the jsonParsed payload when available.
• GET/eth/gas—No price listedEthereum gas oracle - current and next-block base fee, priority-fee percentiles (p10/p50/p90 over the last 20 blocks via eth_feeHistory), slow/standard/fast maxFeePerGas suggestions, legacy eth_gasPrice and the cost of an ETH transfer, ERC-20 transfer and DEX swap in ETH and USD.
• GET/eth/block-number—No price listedLatest Ethereum block height - current chain tip via eth_blockNumber (cached <=3 s). The cheapest liveness / clock tick for Ethereum agents.
• GET/eth/allowance/:token/:owner/:spender—No price listedERC-20 allowance on Ethereum via allowance(owner, spender) (eth_call) - how much a spender such as Permit2 or a DEX router may move from an owner's wallet, decimal-adjusted, with unlimited-approval flag and known-spender label.
• GET/sol/balance/:addr—No price listedSOL balance of any Solana address (lamports + SOL string, confirmed, cached <=2 s).
• GET/sol/tx/:sig—No price listedDecoded Solana transaction: success/err, fee, compute units, signers, fee payer, programs invoked (labelled), SOL balance changes and token balance changes per owner/mint, last log lines.
• GET/base/contract/:address—No price listedBest-effort Base contract introspection in one batched RPC call - bytecode presence and size, ERC-20 metadata (name, symbol, decimals, totalSupply), ERC-721 / ERC-1155 / ERC-165 detection, Ownable owner() and proxy implementation; classifies EOA, EIP-7702 delegated EOA, token, NFT or plain contract.
• GET/eth/balance/:address—No price listedNative ETH balance of any Ethereum address (wei + ETH, latest block) via eth_getBalance.
• GET/sol/sig-status/:sig—No price listedConfirmation status of a Solana transaction signature: found, slot, processed/confirmed/finalized, success or error (searches history). Poll this after sending a tx.
• GET/base/erc20-balance/:address/:token—No price listedERC-20 token balance for any Base wallet - USDC, WETH, USDT or any token - via balanceOf (eth_call): raw and decimal-adjusted amount, symbol, decimals. Not a token -> 404, not charged.
• GET/sol/stake/:addr—No price listedDecoded Solana stake account: delegated vote account, staked SOL, activation/deactivation epoch and status (activating / active / deactivating / inactive), staker and withdrawer authorities, lockup, rent reserve. Not a stake account -> 404, not charged.
• GET/sol/blockhash—No price listedLatest Solana blockhash + lastValidBlockHeight for building and signing transactions (confirmed, cached <=1 s).
• GET/sol/multi-balance—No price listedSOL balances of up to 10 Solana addresses in one call (?addrs=a,b,c): lamports, SOL, exists, owner program (+label), executable, and the total. One getMultipleAccounts read, cached <=2 s.

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