API marketplace

Live Bitcoin mining and hashrate analytics, built on the open mempool.space dataset — the mining layer, not address or mempool data: the mining-pool dominance ranking by share of blocks mined over a period, the current network hashrate and difficulty plus their history, the history of difficulty adjustments with each retarget's percentage change, and block-reward economics over the last N blocks (total and average reward, fees and transactions).

Uptime

100.0%

Latency

224ms

Subs

4,405

Live on-chain exchange data from the Injective network (INJ), a layer-1 blockchain with a fully on-chain central-limit order book for spot and derivative trading: the on-chain spot markets with ticker, status, fees and tokens; the perpetual and futures markets with their live mark price, oracle, margin ratios and fees; a spot market's live on-chain order book (best bid/ask, mid, spread and depth, decoded to human prices); and single-market details.

Uptime

100.0%

Latency

821ms

Subs

3,196

Live official exchange-rate data from the National Bank of the Republic of Belarus (NBRB), the central bank of Belarus, for the Belarusian rouble (BYN): the NBRB official rate for every published currency (normalised to one unit), a single currency's rouble-per-unit rate and inverse, the daily time series of a currency's official rate over a full date range, and currency conversion between any two published currencies (including BYN) cross-computed through the rouble at NBRB rates.

Uptime

100.0%

Latency

181ms

Subs

4,429

Live on-chain data from the Celestia network (TIA), the first modular data-availability blockchain, a proof-of-stake chain secured by delegated staking: an address's liquid TIA balance, total delegated (staked) TIA and pending staking rewards; the active validator set ranked by voting power with each validator's staked TIA, commission and status; a block's height, time, proposer and transaction count; and the live network economy — tip height, total TIA supply, bonded TIA and staking ratio.

Uptime

100.0%

Latency

148ms

Subs

3,363

Live official exchange-rate data from the National Bank of Georgia (NBG), the central bank of Georgia, for the lari (GEL) — uniquely including each rate's daily change: the NBG official rate for every published currency (normalised to one unit) with the day's change, a single currency's lari-per-unit rate and inverse plus daily change, a currency's official rate on a specific past date, and currency conversion between any two published currencies (including GEL) cross-computed through the lari at NBG rates.

Uptime

100.0%

Latency

235ms

Subs

4,863

Live on-chain data from the VeChainThor network (VET), an enterprise-focused layer-1 blockchain with a dual-token model (VET stores value, VTHO pays for gas): an address's VET balance and VTHO energy; a transaction's origin, clauses, total VET value, gas used, VTHO paid and revert status; a block's number, id, timestamp, gas limit and used, Proof-of-Authority beneficiary and transaction count; and the live network tip.

Uptime

100.0%

Latency

149ms

Subs

3,941

Live official exchange-rate data from the Croatian National Bank (Hrvatska narodna banka, HNB), the central bank of Croatia, against the euro — uniquely with three rates per currency (buying, selling and middle): the official rate for every published currency, a single currency's buying/selling/middle rate plus the inverse, a currency's official rate on a specific past date, and currency conversion between any two published currencies (including the euro) cross-computed through the euro at HNB middle rates.

Uptime

100.0%

Latency

134ms

Subs

3,047

Live on-chain data from the Dogecoin network (DOGE), the original meme cryptocurrency, a proof-of-work UTXO chain with 1-minute blocks: an address's confirmed DOGE balance, total received and sent, transaction count and unconfirmed balance; a transaction's total value, fee, size, input/output counts and confirmation status; a block's height, hash, timestamp, transaction count, total value, fees and size; and the live network state — tip height and hash, recommended fee rates and unconfirmed transaction count.

Uptime

100.0%

Latency

238ms

Subs

4,452

Live official exchange-rate data from the National Bank of Ukraine (NBU), the central bank of Ukraine, for the hryvnia (UAH): the NBU official daily rate for every one of 45-plus currencies, a single currency's rate (hryvnia-per-unit and inverse), the daily time series of a currency's official rate over a date range and currency conversion between any two currencies (including UAH) cross-computed through the hryvnia at NBU rates.

Uptime

100.0%

Latency

138ms

Subs

3,794

Live Solana NFT-marketplace data from Magic Eden, the largest NFT marketplace on Solana — a marketplace order-book and trade-feed layer, not a floor-price aggregator: live collection market stats (floor price in SOL, listed count, 24h average sale price, all-time volume), the live order book of tokens on sale (SOL ask price, seller, token mint, rarity rank) and the live trade feed (buys, listings, bids, delistings with price, buyer, seller, on-chain signature and time).

Uptime

100.0%

Latency

317ms

Subs

4,839

Live monetary and exchange-rate data from Sveriges Riksbank, the world's oldest central bank, for the Swedish krona (SEK), via its public SWEA API. Get the Riksbank's current policy rate (styrränta) — the rate that steers the Swedish economy — with its date. Read the krona's exchange rate against any of 40-plus currencies, the official daily krona fixing, both as krona-per-unit and the inverse. Pull the daily time series of any Riksbank series, an FX pair or the policy rate, over a date range. List every currency the Riksbank publishes a krona rate for. Live, no key, nothing stored. Distinct from the ECB, SNB, Bank of Canada, Norges Bank, NBP, CNB, BCB and CBR feeds and from market mid-rates — this is the Riksbank's own krona policy rate and official exchange-rate fixing. Perfect for FX, treasury and analytics apps.

Uptime

100.0%

Latency

200ms

Subs

3,214

Live on-chain data from the Litecoin network (LTC), the long-running silver-to-Bitcoin's-gold proof-of-work UTXO chain with 2.5-minute blocks and Scrypt mining, via the public litecoinspace.org explorer. Like Bitcoin, Litecoin is UTXO-based. Resolve any address's confirmed LTC balance, the total it has ever received and sent, its transaction count and any unconfirmed mempool balance. Look up a transaction's fee, size, input and output counts, total output value and confirmation status. Read a block's height, hash, timestamp, transaction count, size and difficulty. Get the live chain state — the tip height, the recommended fee rates, the mempool size and fees, and the next difficulty adjustment. Live, no key, nothing stored. Distinct from the Bitcoin, Kaspa, XRP Ledger, Cardano, Hedera, Cosmos, Sui, NEAR, MultiversX, Starknet, Solana and EVM on-chain APIs and from price feeds — this is Litecoin's UTXO address state, transactions, blocks and fees. Perfect for wallets, explorers and payments apps.

Uptime

100.0%

Latency

140ms

Subs

3,156

Live prediction-market and forecaster data from Manifold, the largest play-money prediction market and forecasting community, via its public API. On Manifold anyone can create a market and everyone trades with mana, the platform's play-money, so each market's price is a crowd-sourced probability and every trader has a track record. Search markets and get each one's question, current probability, mana volume, unique-bettor count, liquidity and creator. Read one market in full, with its description and close time. See the top holders of a market — who is forecasting which way and how much mana they have invested. Read a forecaster's profile: their mana balance, all-time profit and how many markets they have created. Live, no key, nothing stored. Distinct from real-money prediction-market and sports-odds APIs — this is Manifold's community markets, their crowd probabilities and their forecasters. Perfect for forecasting, trading-signal, research and community apps.

Uptime

100.0%

Latency

268ms

Subs

4,757

Live on-chain data from Starknet, the Ethereum Layer 2 zk-rollup built on the Cairo VM and STARK proofs, via a public Starknet JSON-RPC node. Starknet has no externally-owned accounts: every account is a smart contract with native account abstraction, and fees are paid in STRK or ETH. Resolve an address's transaction nonce, the account contract class it runs and its STRK and ETH balances, read straight from the fee-token contracts. Get a block's number, hash, status, timestamp, sequencer and transaction count. Look up any transaction with its type, finality and execution status, the address that sent it and the actual fee paid. Read the live chain state — the chain id, the JSON-RPC spec version, the latest block and whether the node is syncing. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Cosmos, Sui, NEAR, MultiversX, Solana and EVM on-chain APIs and from price feeds — this is Starknet's Cairo-account state, balances, blocks and transactions. Perfect for wallets, explorers and analytics apps.

Uptime

100.0%

Latency

1015ms

Subs

4,728

Live prediction-market data from Polymarket, the largest real-money prediction market, via its public Gamma API. On Polymarket people trade shares in the outcome of real-world events, so each market's price is a live, money-backed probability. Get the most active markets, each with its outcomes and their implied probabilities, the best bid and ask, the traded volume and the liquidity. Read one market in full, including its description and resolution date. Pull the biggest events — an event groups related markets, like a championship with one market per team — with their total volume and market count. Get one event with every sub-market and its current probability, the whole field at a glance. Live, no key, nothing stored. Distinct from sports-betting-odds and price-feed APIs — this is Polymarket's money-backed event probabilities and its markets. Perfect for forecasting, trading-signal, news and analytics apps.

Uptime

100.0%

Latency

148ms

Subs

3,929

Live on-chain data from the MultiversX network (EGLD), a high-throughput Layer 1 built on adaptive state sharding, via its public REST API. MultiversX has three execution shards plus a metachain and a native fungible-token standard, ESDT. Resolve an address's EGLD balance, its nonce, the shard it lives on, its human-readable herotag username if it has one, and the contract that owns it. Read the ESDT tokens an account holds, each decimal-adjusted with its identifier, ticker and name. Get EGLD's live monetary picture — total and circulating supply, the amount staked and the staking ratio, the price and market cap, and the staking APR. Read the live chain state — the shard count, total blocks, accounts and transactions, the current epoch and the round refresh rate. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Cosmos, Sui, NEAR, Solana and EVM on-chain APIs and from price feeds — this is MultiversX account state, ESDT holdings, EGLD economics and sharded chain stats. Perfect for wallets, explorers and analytics apps.

Uptime

100.0%

Latency

219ms

Subs

3,575

Live spot-market data from KuCoin, one of the largest crypto exchanges and the best-known venue for altcoins, via its public API. KuCoin lists over a thousand trading pairs, so its signature is breadth. Get a pair's full 24-hour snapshot: last price, best bid and ask, high, low, the 24-hour change in price and percent, the base and quote volume, the 24-hour average price and the taker and maker fee. Pull the entire board — every KuCoin pair in one call with its last price and 24-hour change. Get the top of the order book with the spread. Read OHLCV candles at any interval. Live, no key, nothing stored. Distinct from Coinbase, Bitstamp, OKX, Gate.io, Bitfinex, Gemini, Kraken and Bybit venue APIs and from aggregated feeds — this is KuCoin's own ticker, full pair board, order book and candles. Perfect for trading, charting and market-data apps.

Uptime

100.0%

Latency

371ms

Subs

4,654

Live on-chain data from the NEAR Protocol (NEAR), a sharded proof-of-stake Layer 1 known for its human-readable named accounts and its access-key permission model, via a public NEAR RPC endpoint. On NEAR an account is a name like "aurora" or "example.near", not a hash, and each account authorises actions through access keys that are either full-access or function-call-scoped. Resolve an account's NEAR balance, the portion locked for staking, its storage usage and whether it holds a deployed contract. Read the account's access keys with each key's permission — full access, or a function-call key with its allowance, the contract it may call and the methods it is limited to. Get the current validator set ranked by stake, with each validator's blocks produced versus expected. Read the live chain state — the chain id, protocol version, latest block height, gas price, validator count and total stake. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Cosmos, Sui, Solana and EVM on-chain APIs and from price feeds — this is NEAR's named-account state, access keys, staking validators and chain economics. Perfect for wallets, explorers and analytics apps.

Uptime

100.0%

Latency

3176ms

Subs

4,287

Live on-chain data from Sui (SUI), the high-throughput Layer 1 from Mysten Labs built on the Move language and an object-centric model, via a public Sui full-node JSON-RPC endpoint. Unlike account- or UTXO-based chains, on Sui everything an address owns is a typed Move object. Resolve an address's SUI balance together with every coin type it holds and how many distinct coins it owns. Read any coin type's metadata — its name, symbol, decimals and description — and its total on-chain supply. List the Move objects an address owns, each with its object id and fully-qualified type, the native unit of Sui ownership. Read the live chain state — the chain identifier, the current epoch, the latest checkpoint, the total transaction-block count, the reference gas price and the active validator count. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Cosmos, Solana and EVM on-chain APIs and from price feeds — this is Sui's object-model account state, coins, owned objects and chain economics. Perfect for wallets, explorers and analytics apps.

Uptime

100.0%

Latency

361ms

Subs

4,117

Live real-time foreign-exchange and precious-metal quotes from Swissquote, the Swiss bank and broker, via its public BBO (best-bid-offer) price feed. Unlike a central bank's once-a-day reference fixing, this is a live dealing feed: for any currency pair it returns the current bid and ask with the spread, aggregated to the tightest available price across Swissquote's platforms. Get a pair's best bid, ask, mid and spread right now. Pull the full tiered breakdown — every platform and spread profile with its own bid, ask and spread, the data a broker uses to price clients. Convert any amount at the live mid rate. Get live gold, silver, platinum and palladium quotes against the dollar in one call. Live, no key, nothing stored. Distinct from central-bank and ECB daily-fixing FX APIs and from crypto feeds — this is a live broker bid/ask feed with real dealing spreads. Perfect for trading, pricing, remittance and treasury apps.

Uptime

100.0%

Latency

121ms

Subs

4,014

Live on-chain data from the Cosmos Hub (ATOM), the flagship Cosmos-SDK / Tendermint chain and the hub of the inter-blockchain-communication ecosystem. The Cosmos Hub is a proof-of-stake chain built around validators and delegation. Resolve an address's liquid ATOM balance together with everything it has delegated, the validators it stakes to and its total staked amount. Read a validator's full state — its moniker and website, its voting power in ATOM, its commission rate and cap, whether it is bonded or jailed, and its self-described identity. Get the active validator set ranked by voting power. Read the live chain economics — the bonded and unbonded ATOM, the bonded ratio, the total ATOM supply, the current annual staking inflation, the community-pool balance and the active validator count. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Solana and EVM on-chain APIs and from price feeds — this is Cosmos Hub account state, delegation, validators and staking economics. Perfect for wallets, explorers, staking dashboards and analytics apps.

Uptime

100.0%

Latency

319ms

Subs

3,992

Live financial-stability data from the U.S. Office of Financial Research, the federal body created after 2008 to measure systemic risk, via its public Financial Stress Index (FSI). The OFR FSI is a daily, market-based index of stress in the global financial system: a positive value means above-average stress, zero is the historical norm and negative means calm. Get the latest headline index with its day-over-day change. Decompose it into the five kinds of stress it tracks — credit, equity valuation, funding, safe-assets/flight-to-safety and volatility — to see which channel is driving stress. Split it by where the stress sits, the United States versus other advanced economies. Pull the daily time series of the headline or any component back two decades. Live, no key, nothing stored. Distinct from rate, FX, central-bank and stock-index APIs — this is a single, official, daily measure of how stressed the financial system is and why. Perfect for macro, risk, trading and analytics apps.

Uptime

100.0%

Latency

179ms

Subs

4,277

Live on-chain data from Kaspa (KAS), the fastest proof-of-work Layer 1, via the public api.kaspa.org indexer. Kaspa is not a linear blockchain but a blockDAG running the GHOSTDAG protocol, mined with kHeavyHash at one-or-more blocks per second, so its native state is the UTXO and its native measure of progress is the DAA score. Resolve any address's KAS balance and lifetime transaction count. Pull the unspent outputs an address holds, each with its amount, the transaction that created it, its DAA score and whether it is a coinbase. Read the live blockDAG state — block and header counts, the virtual DAA score, the difficulty, the tip count and pruning point — plus the network hashrate and the circulating-versus-max KAS supply with the share already mined. Look up any transaction with its acceptance status, accepting-block blue score, mass and outputs. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Solana and EVM on-chain APIs and from price feeds — this is Kaspa's blockDAG state, UTXO holdings, address balances and transactions. Perfect for wallets, explorers, mining and analytics apps.

Uptime

100.0%

Latency

422ms

Subs

4,991

Live data on the Federal Reserve's balance sheet — the System Open Market Account (SOMA) — via the Federal Reserve Bank of New York's public markets API. SOMA is the portfolio of Treasury securities, agency debt and agency MBS the Fed holds, the asset side of the world's most important central-bank balance sheet, the thing that grows in QE and shrinks in QT. Get the latest weekly snapshot — total holdings and the breakdown across bills, notes and bonds, TIPS, FRNs, agency MBS, CMBS and agency debt. Pull the weekly time series back two decades to see every round of quantitative easing and tightening. Read the actual line-item securities the Fed owns — each CUSIP with its security type, maturity, coupon, par value held and share of the issue outstanding. Bucket the Treasury holdings by time to maturity, the profile that drives the pace of runoff. Live, no key, nothing stored. Distinct from money-market reference-rate, FX-rate, central-bank-policy and stock-index APIs — this is the size, composition and maturity of the Fed's actual securities portfolio. Perfect for rates, macro, fixed-income and analytics apps.

Uptime

100.0%

Latency

159ms

Subs

3,884