Mint Intel: Ethereum chain data

ETH/USD read straight from Ethereum state, no CEX or API key: the Chainlink ETH/USD feed (latestRoundData) plus the Uniswap v3 WETH/USDC 0.05% pool spot price in one RPC batch. Median of fresh sources, per-source price, feed age and round, spread in bps.

Native ETH balance of any Base address (wei + ETH, latest block) via eth_getBalance.

Latest Base block height - current chain tip via eth_blockNumber (cached <=1 s). The cheapest liveness / clock tick for Base agents.

ETH/USD read straight from Base state, no CEX or API key: the Chainlink ETH/USD feed (latestRoundData) plus the Uniswap v3 WETH/USDC 0.05% pool spot price in one RPC batch. Median of fresh sources, per-source price, feed age and round, spread in bps.

Base 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, the L1 base fee and the cost of an ETH transfer, ERC-20 transfer and DEX swap in

Base 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).

Next transaction nonce for any Base wallet via eth_getTransactionCount (latest + pending) - how many transactions it has sent and how many are still pending.

Latest Ethereum block height - current chain tip via eth_blockNumber (cached <=3 s). The cheapest liveness / clock tick for Ethereum agents.

Solana block production for the current epoch via getBlockProduction (cached <=60 s): cluster leader slots, blocks produced, skipped slots and skip rate %, the 10 worst skip rates among validators with >= 40 leader slots, and with ?id= one validator's leader slots, blocks and ski

Decoded Solana address lookup table used by v0 transactions: authority (or frozen), active vs deactivated, deactivation and last-extended slots, address count and every stored address (<= 256), via getAccountInfo jsonParsed. Not a lookup table -> 404, not charged.

Solana token mint intel: mint/freeze authority (renounced or live), supply, decimals, SPL vs Token-2022, Token-2022 extensions (permanent delegate, transfer hook, transfer fee, default-frozen, pausable), metadata (name/symbol/uri, mutability) and structural risk flags. Public on-

The next Solana slot leaders from getSlotLeaders, merged into 4-slot leader windows: validator identity, vote account, active stake, commission, first/last slot and seconds until each window starts. Route time-critical transactions to the upcoming leaders. ?limit=1..25.

Decoded Solana durable nonce account: the stored nonce (use it as recentBlockhash for offline or delayed signing), nonce authority, fee per signature and balance, via getAccountInfo jsonParsed. Not a nonce account -> 404, not charged.

Confirmation status of a Solana transaction signature: found, slot, processed/confirmed/finalized, success or error (searches history). Poll this after sending a tx.

Simulate a Solana transaction before sending it via simulateTransaction (sigVerify off, recent blockhash replaced, nothing is sent): success or the exact error, compute units consumed, fee in lamports, program logs, return data. Pass ?tx= as base58 or base64 (unsigned is fine). M

Total supply (raw + ui), decimals, program (SPL / Token-2022), mint authority (still mintable?) and freeze authority of a Solana token mint. Cheap single-account read.

On-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.

ERC-20 allowance on Base 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.

Base 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.

Simulate a read-only Base 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.

Is a Base 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.

Best-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, NF

ERC-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.

ERC-20 Transfer events on Base via eth_getLogs - the newest transfers of a token, optionally only those from or to one wallet (?wallet=), window up to 2,000 blocks: block, tx hash, from, to, raw and decimal-adjusted value.