Polygon PoS checkpoints from the Heimdall API: the latest K checkpoints (1 to 10) with their Bor block range, timestamp and proposer, plus the average spacing in blocks and seconds. Checkpoints are the Ethereum-anchored root commitments. State-sync logs are not included.

Sky (MakerDAO) savings rates and peg: sUSDS and sDAI savings APY and TVL on Ethereum (DefiLlama yields), DAI and USDS USD price and depeg %, and circulating supply. Vault collateralization is not in these sources and is not reported.

OP Mainnet (Optimism) recent blocks from the public RPC: transactions per block, gas used per block, block time, and the transaction rate over the last N blocks (1 to 10). Sequencer revenue and Superchain-wide totals are not in this RPC and are not reported.

ERC-721 collection activity on Ethereum from Blockscout: name, holder count, supply and the newest 50 transfers, with round-trip transfers (a token sent A to B and straight back to A) flagged as possible wash signals. No sale prices, floor price or royalties: this source does not provide them.

Pyth Network oracle prices with confidence bands, read on-chain from Pyth's Solana push feeds: price, confidence interval (absolute and %), EMA price and EMA confidence, publish time and age in seconds, feed id and account, for up to 20 symbols (BTCUSD, ETHUSD, SOLUSD, gold XAUUSD, stablecoins, LST rates; ~65 feeds). Call with list=true for every available symbol.

Scroll (zkEVM L2) network statistics from its public explorer: total blocks and transactions, average block time, gas prices, network utilization and today's transactions, plus the newest blocks (1 to 10) with gas use and transaction counts. Narrowed: proof and batch-finalization status is not in this public API and is not reported.

Mantle Network L2 telemetry from the public Mantle RPC: latest block, safe block (its batch is posted to Ethereum/EigenDA) and finalized block with numbers, times and transaction counts, the head-to-safe and head-to-finalized lags in blocks and seconds, gas price (gwei), base fee, gas used % of limit and average block time over the last 20 blocks. Treasury AUM and per-blob EigenDA statistics are not in the RPC and are not reported.

Linea zkEVM rollup telemetry from the public Linea RPC: latest sequencer block, safe block and finalized block (proven and finalized on Ethereum L1) with numbers, times and transaction counts, the finality lag in blocks and seconds, gas price (gwei), base fee, gas used % of limit and average block time over the last 20 blocks. Batch/proof IDs are not exposed by the RPC and are not reported.

Ethereum MEV-Boost delivered blocks from the Flashbots relay: proposer payment in ETH (block value), transaction count, gas used vs limit, and builder pubkeys with block counts. Covers the newest blocks only (1 to 50). Sandwich volume is not in this source and is not reported.

Token emission and unlock schedule per allocation label (team, investors, rewards, etc.) from DefiLlama emissions data, by protocol slug: last unlock day and amount, next scheduled unlock (if any in the data), and total unlocked to date. Amounts are in tokens. Coverage depends on DefiLlama having the protocol's emissions file.

Token balances of an EVM wallet across chains from Blockscout explorers: native coin and ERC-20 holdings with amount, USD price and USD value (largest first), plus per-chain and overall USD totals. Ethereum, Optimism and Gnosis by default; Base, Arbitrum and Polygon when the operator's free Blockscout key is set. Prices are Blockscout's; airdropped tokens can be spam.

On-chain wallet portfolio and performance from Zerion across 40+ EVM chains and Solana: total value in USD, split by position type (wallet, deposited, borrowed, locked, staked) and by chain, 1-day change, lifetime PnL (realized, unrealized, total gain and %, invested, fees) and, with a period, the value history chart (up to 60 points).

Asian Development Bank financing (loans, grants, technical assistance) from ADB's official IATI data via d-portal.org: IATI activity id, ADB project number and link, title, recipient country, status, start/end dates, committed and disbursed USD, description. Filter by country (ISO2) and title words; newest start first. Open data, no key.

Solana validator snapshot from the public RPC: active and delinquent validator counts, total active stake in SOL, stake-weighted commission, cluster skip rate over the latest epoch block production, and the top validators by stake with their commission and skip rate.

Solana account inventory: SOL balance, every SPL token account (Token and Token-2022 programs) with mint, amount, decimals and frozen state, token name, symbol, USD price and value for the largest holdings (Jupiter token data), and the latest transaction signatures with time and status. Read from Solana RPC.

Solana SPL mint audit from the chain: program (Token or Token-2022), authorities, supply and decimals, plus Token-2022 extensions with risk flags for permanent delegate, transfer hook, transfer fee, default frozen state and mint close. Reads the mint account only; it does not check holders or liquidity.

USDT (Ethereum) supply changes from the USDT contract's own events over the last N blocks (1 to 200000, about 4 weeks): Tether issues (Issue), redemptions (Redeem) and destroyed funds of blacklisted addresses (DestroyedBlackFunds), with counts, totals and the latest and largest events. On-chain events only, not Tether's treasury reports.

SushiSwap route quote for an exact-input swap on one EVM chain: amount out, swap price, price impact, gas spent and the tokens in the route. Quote only, no transaction data. The API needs a sender address; if none is given, a fixed placeholder address is sent and nothing is signed or executed.

Tornado Cash ETH pools (0.1, 1, 10, 100 ETH): current pool balance, contract code presence, and an approximate anonymity set = balance divided by denomination (deposits not yet withdrawn, if nothing else moved the balance). Ethereum pools only; no relayer or multi-chain data. Sanctioned protocol data, read for its public on-chain state.

zkSync Era rollup batches from the public block explorer API: the newest N batches (1 to 20) with batch number, time, status (sealed, committed, proven, executed), L1 and L2 transaction counts, and the chain ids where each step was posted. Hyperchain (other zkSync chains) data is not included.