API marketplace

Live Ethereum mainnet on-chain data as an API, built on the open Blockscout explorer — a different layer from market-price feeds. Pull network stats (total blocks and transactions, ETH price, market cap and live gas usage), a gas oracle with slow, average and fast prices in gwei, the most recent blocks and full block detail by height or hash. Look up any address for its ETH balance, ENS name and contract status, any transaction by hash for its value, fee, status, sender and receiver, and any ERC-20 token by contract for its name, symbol, decimals, holders and USD exchange rate. A universal search resolves addresses, tokens, blocks and transactions in one call. Real on-chain data, no key needed upstream. Ideal for wallets, block explorers, gas trackers, DeFi dashboards and crypto analytics.

Uptime

100.0%

Latency

752ms

Subs

4,804

Live Bitcoin on-chain and mempool data as an API, built on the open mempool.space dataset — a different layer from market-price feeds. Get recommended transaction fees (sat/vB) for fast, half-hour, hour and economy confirmation, the current mempool state with its fee histogram, the most recent blocks and full block detail by height or hash (size, weight, transaction count, mining pool, reward and fees). Look up any Bitcoin address for its confirmed and unconfirmed balance and transaction counts, or any transaction by id for its inputs, outputs, fee and confirmation status. Track the difficulty-adjustment countdown, mining-pool hashrate share, the network hashrate over time and the current BTC price. Real on-chain data, no key needed upstream. Ideal for wallets, block explorers, fee estimators, mining dashboards and crypto analytics.

Uptime

100.0%

Latency

102ms

Subs

3,937

Live Binance crypto exchange market data as an API — clean JSON, no key. Get the current price of any trading pair, full 24-hour ticker statistics (open, high, low, last, price change, weighted average, best bid/ask and volume), candlesticks (klines) for any interval from one minute to one month, the live order book (bids and asks with quantities), recent trades, the current average price, and the full list of trading pairs filtered by quote asset. Live data straight from Binance's public market endpoints. Distinct from aggregate coin-market data: this is exchange-native trading data — order book, candles and live ticks — ideal for trading bots, price feeds, charts, backtesting and crypto dashboards. 7 data endpoints. Authenticated with an x-oanor-key; fair-use rate limits per plan.

Uptime

100.0%

Latency

362ms

Subs

3,495

Validate and decode Indian GSTINs (the 15-character Goods & Services Tax Identification Number) instantly and entirely offline. The validate endpoint checks the structure and recomputes the official GSTIN check digit — the base-36 weighted algorithm the GSTN itself uses — and confirms the embedded state code is real, returning a clear valid/invalid verdict with the specific reasons a number fails. The decode endpoint breaks a GSTIN into its parts: the GST state/UT code and its name, the embedded 10-character PAN, the PAN holder type (company, individual/proprietor, firm/LLP, HUF, trust, government and more, read from the PAN's 4th letter), the entity registration number, the default 'Z' slot and the check digit. A states endpoint returns the full GST state-code reference for building dropdowns and lookups. Everything is pure computation — no network call, no key, no cache — so it is fast and private, ideal for checkout and onboarding forms, invoicing and e-invoice/e-way-bill pipelines, vendor master data cleansing and bulk validation. A structural GSTIN validator and decoder — distinct from EU VAT-number validation (vat), IBAN bank-account validation (iban) and card-number checks (creditcard). Note: this verifies the number's structure and check digit, not whether it is actively registered in the GSTN portal. No upstream key, no cache.

Uptime

100.0%

Latency

92ms

Subs

3,943

Decentralized-finance analytics as an API, powered by DeFiLlama — the most-used, independent dashboard for tracking Total Value Locked (TVL) across the DeFi ecosystem. TVL is the dollar value of assets deposited in a protocol, the key measure of a DeFi protocol's size and health. This API wraps DeFiLlama's open data into clean, compact JSON. /v1/protocols ranks DeFi protocols by TVL and lets you filter by blockchain (chain=Ethereum) and by category (category=Lending, Dexes, Liquid Staking, CDP, Yield, Bridge and more) — each protocol with its slug, token symbol, category, the chains it runs on, its TVL in USD and 1-day and 7-day TVL change. /v1/protocol?slug=aave returns a single protocol's profile and its current TVL broken down by blockchain (real chains only, so the headline figure is not inflated by staking or borrowed aggregates). /v1/chains ranks every blockchain by the TVL deployed on it. /v1/stablecoins ranks stablecoins by circulating supply, with each coin's peg type and peg mechanism. All values are in US dollars and reflect the latest snapshot. Ideal for crypto and DeFi dashboards, portfolio and risk tools, market-research and analytics products, and Discord/Telegram bots. This is on-chain/DeFi analytics — distinct from token-price feeds. Use a protocol slug from /v1/protocols for the detail endpoint. Data from DeFiLlama (free and open).

Uptime

100.0%

Latency

281ms

Subs

4,311

US banking data as an API, powered by the FDIC BankFind Suite — the official open data service of the Federal Deposit Insurance Corporation. Search the roughly 4,500 FDIC-insured banks by name and state (active, inactive or all), getting each bank's FDIC certificate number, name, city and state, total assets and deposits, branch-office count, charter class and founding year, ranked by size; read a single bank's full profile including its address, website, established and (if applicable) closed dates, total assets, deposits, equity and net income, branch count, charter class and type, primary federal regulator, deposit-insurance fund and business specialization; track a bank's quarterly financial performance over time — assets, deposits, equity, net income, net loans, return on assets, return on equity and net interest margin; and browse the complete history of US bank failures since 1934, with each failure's date, resolution type, acquiring institution, total assets and deposits and the FDIC's estimated cost — including recent high-profile failures such as Silicon Valley Bank, Signature Bank and First Republic Bank. Ideal for fintech, financial research, risk analysis, journalism and compliance tooling. Identify a bank by its FDIC certificate number from search results; all dollar figures are reported in thousands of US dollars. Data is public-domain from the FDIC (US institutions only).

Uptime

100.0%

Latency

476ms

Subs

3,935

Economic data from 90+ official providers as one API, powered by DBnomics. DBnomics aggregates the public statistics of the IMF, OECD, Eurostat, the European Central Bank, the World Bank, the BIS, the US Federal Reserve and Bureau of Labor Statistics, national statistics offices and dozens more — millions of time series — into a single, consistent interface. List the data providers; search datasets across every provider at once by keyword; read a dataset's details and its dimensions (the codes you combine to pick a series); and fetch a series with its full observations (period and value) plus the latest data point. The typical flow is search → dataset → series. Ideal for macroeconomic and financial dashboards, data-science and research pipelines, fintech and economics apps, and anyone who needs GDP, inflation, unemployment, interest-rate, trade or monetary series from authoritative sources. Data is free and open.

Uptime

100.0%

Latency

520ms

Subs

3,324

The Bitcoin blockchain as an API, powered by mempool.space. Get live transaction-fee estimates in sat/vB (fastest, 30-minute, 1-hour, economy and minimum) plus a projection of the next mempool blocks, inspect the current mempool size and fee histogram, list recent blocks with their mining pool, size and fees, look up any block by height or hash, check any Bitcoin address for its confirmed balance, total received/sent and recent transactions, fetch any transaction with its inputs, outputs, fee and confirmation status, read the current difficulty adjustment and network hashrate, and get the live BTC price in major currencies. Every amount is in satoshis. Perfect for wallets and fee estimators, block explorers, address and payment monitoring, on-chain dashboards and analytics, and Bitcoin bots. No accounts, no upstream key. For coin market prices use the Crypto API and for DeFi TVL the DeFi API.

Uptime

100.0%

Latency

196ms

Subs

4,268

Decentralized-finance analytics as an API, powered by DefiLlama. Track the Total Value Locked (TVL) across more than 7,000 DeFi protocols ranked and filterable by blockchain and category (Lending, DEXes, Liquid Staking, Bridges, CDP and more), drill into any single protocol for its current TVL, per-chain breakdown, category, market cap and links, see how much value is locked on each of 450+ blockchains, read the circulating supply and peg of every major stablecoin (USDT, USDC, DAI and the rest), and find the best yield-farming pools with their base and reward APY, filterable by chain and project. Every figure is live and denominated in USD. Perfect for DeFi dashboards and portfolio trackers, yield aggregators, research and analytics tools, trading bots and crypto data sites. No accounts, no upstream key. For token spot prices use the Crypto API.

Uptime

100.0%

Latency

360ms

Subs

3,748

Format numbers in human-readable forms as an API. Spell any number in English words — handling thousands through quintillions, negatives and decimals (e.g. 1,234,567 → "one million two hundred thirty-four thousand five hundred sixty-seven", 12.56 → "twelve point five six"). Turn a whole number into its ordinal, both short (21 → 21st, 113 → 113th) and written out (twenty-first, one hundred thirteenth). And convert any whole number from 1 to 3999 to Roman numerals and back (2024 ⇄ MMXXIV), with strict validation. Everything runs locally, so it is fast and always available. Ideal for invoices, cheques and accounting, legal documents, internationalisation, accessibility (screen readers), education and any UI that turns digits into words.

Uptime

100.0%

Latency

94ms

Subs

4,406

US Treasury fiscal data as an API, live from the official api.fiscaldata.treasury.gov. Track the US national debt to the penny (total public debt outstanding, debt held by the public and intragovernmental holdings) for the latest day or any date range; get the average interest rates the US government pays on its securities (Treasury Bills, Notes, Bonds, TIPS and more); and look up the official US Treasury reporting exchange rates for ~170 world currencies, used to convert foreign currency to USD for government reporting. Ideal for debt clocks, macro-economic dashboards, fintech, research and data journalism. Public-domain US Treasury data.

Uptime

100.0%

Latency

459ms

Subs

4,151

US federal government spending as an API, live from the official USAspending.gov (US Treasury). Search federal awards — contracts, grants, loans and direct payments — by keyword, recipient, award type and fiscal year, ranked by amount, with the recipient name, dollar amount, awarding agency, description and award dates. Rank the top recipients of federal money for any search, and list and inspect the 100+ top-tier federal agencies with their budgetary resources. Ideal for government-transparency, investigative journalism, contractor intelligence, grants research, GovCon and policy-analysis applications. Public-domain US Treasury data.

Uptime

100.0%

Latency

454ms

Subs

3,437

ISO 18245 Merchant Category Codes (MCC) as an API — the 981 four-digit codes that Visa, Mastercard and other card networks use to classify a merchant's line of business. Look up any code (e.g. 5812 → Eating places and Restaurants, 5411 → Grocery Stores/Supermarkets, 3000 → United Airlines), search by description (e.g. "hotel", "airline", "pharmacy"), filter by IRS-reportable status, or list them all. Each record carries the network/edited description, USDA and IRS descriptions and whether the category is IRS 1099-reportable. Ideal for payments, fintech, expense management, fraud analysis and transaction enrichment.

Uptime

100.0%

Latency

91ms

Subs

3,078

The North American Industry Classification System (NAICS 2022) as an API — 2,100+ industry codes in a 5-level hierarchy (sector → subsector → industry group → industry → national industry). Look up any code (e.g. 541511 → Custom Computer Programming Services) with its full ancestor chain and direct children; search industries by title (e.g. "software", "restaurant"); or navigate the tree from the 20 top-level sectors down. NAICS is the standard used by US, Canadian and Mexican statistical agencies to classify business establishments. Ideal for business classification, market research, CRM enrichment, lead segmentation and economic analysis.

Uptime

100.0%

Latency

93ms

Subs

4,889

VAT, GST and sales-tax rates for 128 countries — plus US state and Canadian province sub-rates — with a built-in tax calculator. Get the standard rate for any country (e.g. DE → 19%), compute the tax and gross total on a net amount (e.g. €100 in Germany → €19 tax, €119 total), apply a US state or Canadian province rate, or list every country. Ideal for e-commerce checkouts, invoicing, SaaS billing and pricing tools. (Standard rates, not tax advice.)

Uptime

100.0%

Latency

91ms

Subs

4,219

The official ISO 10383 Market Identifier Code (MIC) registry as an API — 2,800+ stock exchanges and trading venues worldwide. Look up a venue by its MIC (e.g. XNAS, XLON), search by name, country, status or market category, and see the operating MIC, legal entity, LEI, city, website and active/expired status. Ideal for fintech, trade reporting, MiFID II compliance and broker tooling.

Uptime

100.0%

Latency

88ms

Subs

4,930

US public-company filings and financial statements straight from the U.S. SEC EDGAR system. Search 10,000+ companies (ticker → CIK), list a company's recent filings (10-K, 10-Q, 8-K and more) with document links, pull XBRL financial-statement time series (revenue, assets, net income and any GAAP concept) and run full-text search across all EDGAR filings. Ideal for fintech, fundamental analysis, compliance and research.

Uptime

100.0%

Latency

674ms

Subs

4,770

Search and look up the global register of legal entities (companies, funds, branches) by name or LEI, powered by the GLEIF Legal Entity Identifier system — roughly 2.6 million entities worldwide. Returns the official legal name, legal form, jurisdiction, registered address, entity status and registration details. Ideal for KYB, compliance, onboarding and supplier verification.

Uptime

100.0%

Latency

219ms

Subs

3,583

Validate IBANs with the ISO 7064 mod-97 checksum and per-country length and structure checks, and resolve the BIC and bank details for supported countries. A local parse endpoint works for every IBAN country offline; the validate endpoint adds bank-code verification and BIC. Ideal for payments, billing, onboarding and KYC.

Uptime

100.0%

Latency

198ms

Subs

3,929

Real-time quotes, historical price candles (OHLCV) and symbol search for stocks, ETFs, indices, foreign exchange and cryptocurrencies. Covers global markets — look up any ticker, index (^GSPC), FX pair (EURUSD=X) or coin (BTC-USD).

Uptime

100.0%

Latency

710ms

Subs

4,176

Live & historical foreign-exchange rates from the European Central Bank: latest rates, historical lookups, time-series and currency conversion across 30+ currencies.

Uptime

100.0%

Latency

155ms

Subs

3,638

Live cryptocurrency market data: prices, top coins & markets, price/OHLC charts, historical snapshots, trending coins, global stats, exchanges and categories.

Uptime

100.0%

Latency

601ms

Subs

3,678