API marketplace

Live market data for crypto sectors and narratives — the themes the market actually trades, not single coins. Served from the public CoinGecko categories feed (no key, nothing cached), it ranks hundreds of sectors: Smart Contract Platforms, Layer 1s and Layer 2s, Memes, Artificial Intelligence, Real-World Assets, DePIN, Gaming, DeFi, Liquid Staking and many more. For each category it gives the total market capitalisation, the 24-hour market-cap change, the 24-hour trading volume and the three largest coins in that sector — so you can see, for example, that the Meme sector is roughly a $30B market led by Dogecoin and Shiba Inu, and which narratives are pumping or bleeding today. The categories endpoint ranks every sector and can be sorted by market cap, 24-hour change or volume; the category endpoint returns one sector by id or name with its market-cap rank and description; the movers endpoint surfaces the top gaining and losing narratives over the last 24 hours, filtered to real sectors so micro-cap dust does not distort the board. This is the sector-rotation and narrative-tracking layer for any crypto research, screener, portfolio or dashboard app — which themes hold the money and which are moving. Live from CoinGecko, nothing stored. Distinct from single-coin price, market-cap and mover APIs — this is the market by sector and narrative. 4 endpoints.

Uptime

100.0%

Latency

142ms

Subs

4,691

Live profile and notes for any Nostr account, read straight from the open Nostr relay network — no key, no account, nothing cached. Nostr is the decentralised, censorship-resistant social protocol with no central server, so this service queries several public relays in parallel and merges and de-duplicates what they return. Give it a public key, either as 64-character hex or as an npub… key (it decodes bech32 npub keys for you), and the profile endpoint returns the account's kind-0 metadata: name, display name, about/bio, picture, banner, website, NIP-05 verified identifier and Lightning address — fiatjaf's key resolves to name "fiatjaf", NIP-05 [email protected]. The notes endpoint returns the account's most recent kind-1 text notes — the posts — newest first and de-duplicated across relays, each with its content, timestamp, note id and mention and reply counts. The relays endpoint lists the public relays queried. This is the profile-and-posts layer for any Nostr client, bot, indexer or social dashboard — live from the relay network, nothing stored. Distinct from centralised-platform social APIs — this reads the open Nostr protocol directly from its relays. 4 endpoints.

Uptime

100.0%

Latency

1096ms

Subs

4,045

Live corporate-events calendar for US-listed stocks — the dates that move markets — served straight from Nasdaq's public calendar feed. For any trading day it answers the three questions a trader's calendar needs. The earnings endpoint lists every company reporting on a date with the session (pre-market or after-hours), the consensus EPS forecast, the number of analyst estimates, market cap and the year-ago actual EPS — so you can see, for example, Oracle reporting after the close with a $1.58 consensus against $1.35 a year earlier. The dividends endpoint gives the dividend calendar: the ex-dividend, record and payment dates, the per-share rate and the indicated annual dividend. The splits endpoint gives the stock-split calendar with the split ratio and execution date. This is the forward event-calendar layer every trading, portfolio, screener, earnings-tracker and finance app needs — read live from Nasdaq, nothing cached or stored. Pass any date as YYYY-MM-DD, or omit it for today. Distinct from price, quote and fundamentals APIs — this is the forward calendar of corporate events: who reports, who pays, who splits, and when. 4 endpoints.

Uptime

100.0%

Latency

1276ms

Subs

3,215

Live ERC-20 token metadata, read straight off the blockchain. Give it any token contract address and it returns the token's name, symbol, decimals and total supply — both as the raw on-chain integer and as a human-formatted number — by calling the ERC-20 contract directly via the chain's public JSON-RPC node (eth_call), confirming first that the address is really a contract. The USD Coin contract resolves to "USD Coin", symbol USDC, 6 decimals; Wrapped BTC on Polygon to "(PoS) Wrapped BTC", symbol WBTC, 8 decimals. The balance endpoint reads any wallet's holding of any token — pass the token contract and an owner address and it returns the balance raw and formatted with the token's own decimals and symbol. It works across seven EVM chains — Ethereum, Polygon, BNB Smart Chain, Arbitrum, Optimism, Base and Avalanche — with friendly aliases (eth, matic, bnb, arb, op, avax). This is the token-metadata and token-balance layer every wallet, DEX, portfolio tracker, block explorer and DeFi dashboard needs: turn a bare 0x… contract into a named, decimalled token, and resolve any holder's balance, in one call. Read live from the chain, no key on the data source, nothing cached. Distinct from native-coin balance and market-price APIs — this is on-chain ERC-20 contract data read directly from the blockchain. 4 endpoints across 7 chains.

Uptime

100.0%

Latency

115ms

Subs

4,585

Live Letterboxd film-diary data as an API — Letterboxd is the social network for film lovers, and this returns any member's public diary and ratings from their RSS feed. The diary endpoint lists the films a member has recently watched, each with its title, year, the member's star rating, the date watched, whether it was a rewatch, a review excerpt and the film link. The stats endpoint computes a summary of their recent watching: the number of films, their average rating, the full rating distribution, the rewatch rate and the highest-rated film. The film-social and watch-activity layer for film, social and dashboard apps. Live, no key, no cache. Distinct from TV-listings and movie-catalogue APIs — this is a Letterboxd member's own diary and ratings.

Uptime

80.0%

Latency

548ms

Subs

4,831

Live market "fear gauges" across asset classes as an API, served from Yahoo Finance. The VIX is the market's headline fear index — the S&P 500's 30-day implied volatility — and this returns it alongside the rest of the family: the 9-day VIX (short-term fear), the Nasdaq-100 (VXN) and Dow (VXD) volatility indices, crude-oil (OVX) and gold (GVZ) volatility, and the VVIX, the volatility of the VIX itself. Each comes with its current level, the day's change, and its day and 52-week range, and the board adds a plain-language fear regime from the VIX (complacent, normal, elevated, high or extreme). Get the whole board or one index. The implied-volatility and risk-sentiment layer for trading, macro-research and dashboard apps. Live, no key, no cache. Distinct from equity-index, crypto-volatility and FX-volatility APIs — this is the cross-asset implied-volatility (fear) suite.

Uptime

100.0%

Latency

158ms

Subs

4,692

Live native-coin balance for any EVM wallet address across the major chains as an API, read straight from each network's public JSON-RPC node. For any 0x address it returns the native balance (in coin units and in wei), the transaction count (nonce), and whether the address is a smart contract. Check one chain, or fan out across every supported chain at once to see where a wallet holds funds — Ethereum, Polygon, BNB Smart Chain, Arbitrum, Optimism, Base and Avalanche. The wallet-balance and address-lookup layer every wallet app, portfolio tracker and dashboard needs. Live, no key, no cache. Distinct from gas-fee and price APIs — this is on-chain address balances.

Uptime

100.0%

Latency

142ms

Subs

3,132

Live TV-show data and what's on the air as an API, served from TVmaze. Look any show up by name or id for its details and popularity — genres, status, runtime, premiere and end dates, the average user rating, TVmaze's popularity weight, the network and country, the official site and a summary. Search the show catalogue, or pull a country's daily broadcast schedule: every episode airing on a given day with its show, season, episode and airtime. The TV-listings, popularity and what's-on layer for entertainment, media and dashboard apps. Live, no key, no cache. Distinct from movie and anime APIs — this is TVmaze's television shows, ratings and schedule.

Uptime

100.0%

Latency

139ms

Subs

4,459

Live S&P 500 sector performance as an API — the sector-rotation picture traders watch, served from Yahoo Finance via the eleven SPDR sector ETFs. It returns each of the eleven GICS sectors — Technology, Financials, Energy, Health Care, Consumer Discretionary, Consumer Staples, Industrials, Materials, Utilities, Real Estate and Communication Services — with its tracking ETF's price, the day's change, the day's high and low, and the 52-week high and low. Pull the whole board ranked by the day's move, with the leading and lagging sectors called out, or look one sector up by name or ETF ticker. The sector-rotation and market-breadth layer for trading, macro-research and dashboard apps. Live, no key, no cache. Distinct from index-level, single-stock and cross-asset-ratio APIs — this is the equity-sector performance breakdown.

Uptime

100.0%

Latency

157ms

Subs

4,815

Live most-traded crypto pairs by 24-hour spot volume as an API, powered by Binance. It ranks the trading pairs by their 24-hour quote volume — where the real liquidity and activity is right now — with each pair's last price, daily change, 24-hour high and low, base and quote volume, and the number of trades. Rank by any quote currency (USDT, BTC, ETH, USDC), or look a single pair up for its full 24-hour stats. The spot-volume and market-activity leaderboard for trading, screening and dashboard apps. Live, no key, no cache. Distinct from price-change movers and from DEX-volume APIs — this is centralised-exchange spot trading volume.

Uptime

100.0%

Latency

570ms

Subs

3,300

Live wallpaper-community data from Wallhaven as an API — search the large community wallpaper collection by keyword and category (general, anime, people), sorted by favourites, views or freshness, and read any wallpaper's community engagement (favourites and views) along with its resolution, aspect ratio, file type, dominant colours and tags. The visual-community engagement layer for wallpaper, design and dashboard apps. SFW-only by design — every request is forced to safe content. Live, no key, no cache. Distinct from generic image and stock-photo APIs — this is Wallhaven's own community wallpapers, their favourites/views engagement and tags.

Uptime

100.0%

Latency

412ms

Subs

4,527

Live intermarket relative-value ratios as an API — the cross-asset signals macro and technical traders watch, computed from Yahoo Finance prices. Each ratio divides one market by another to reveal relative value and regime: the Gold/Oil ratio (barrels of crude per ounce of gold), the Oil/Gas energy spread, the Copper/Gold ratio (a growth and interest-rate barometer), the S&P 500 priced in gold, and the Stocks/Bonds ratio (risk-on versus risk-off, SPY/TLT). For each it returns both leg prices, the ratio value, the day change and a plain-language reading. Get one ratio or the whole board in a single call. The intermarket relative-value layer for trading, macro-research and dashboard apps. Live, no key, no cache. Distinct from single-asset price APIs and from the precious-metals ratio — this is the cross-asset ratio set.

Uptime

100.0%

Latency

162ms

Subs

4,544

Live crypto spot-versus-perpetual basis and premium as an API, served from the Bybit v5 feed. The basis is the gap between a coin's perpetual-futures price and its spot price: when the perp trades above spot the market is in contango (leveraged longs are paying up), when below it is in backwardation. For any coin this returns the spot price, the perp last, mark and index price, the basis in absolute and percentage terms, the mark-to-index premium, the market structure, and the funding rate — per-8-hour and annualised — that arbitrages the basis away. Get a coin's basis, or scan the majors ranked by basis. The cash-and-carry and funding-arbitrage signal layer for trading and dashboard apps. Live, no key, no cache. Distinct from funding-rate, open-interest and price APIs — this is the spot-perp basis.

Uptime

100.0%

Latency

283ms

Subs

4,769

Live profile and repository data from Codeberg as an API — the community-run, Forgejo-powered git host and a leading open-source alternative to GitHub. Look up any user or organisation for their profile and social reach (followers, following, starred repositories, join date, location and website), open any repository for its stats (stars, forks, watchers, open issues, primary language, size and dates), or search Codeberg's repositories ranked by stars. The git-forge community layer for developer, social and dashboard apps. Live, no key, no cache. Distinct from GitHub and GitLab APIs and from package-registry APIs — this is the Codeberg platform's own community and project data.

Uptime

100.0%

Latency

861ms

Subs

3,704

Live stock dividend data as an API — the dividends any listed stock or ETF actually pays, served from Yahoo Finance. For any ticker it returns the trailing-twelve-month dividend per share, the current dividend yield, the payment frequency (monthly, quarterly, semi-annual or annual), the most recent payment with its date, and the dividend payment history. Look a stock up by ticker or company name, or pull its full payment history over several years. Non-paying stocks are reported cleanly with a zero yield so you can screen for income. The dividend-income layer for investing, screening and dashboard apps. Live, no key, no cache. Distinct from dividend-ratio calculators and from price-quote APIs — this returns the stock's actual dividends paid and its real yield.

Uptime

100.0%

Latency

231ms

Subs

3,348

Live crypto top-gainers and top-losers as an API, powered by CoinGecko. Across the 1-hour, 24-hour and 7-day windows it ranks the biggest gainers and the biggest losers among the market-cap-leading coins, with each coin's price, percent move, market cap and 24-hour volume. Get the gainers board, the losers board, or both together for a given timeframe. A market-cap floor keeps the boards to coins with a real market cap, so the movers are meaningful rather than dust. The market-movers leaderboard for trading, screening and dashboard apps. Live, no key, no cache. Distinct from trending (most-searched) and from price and market-cap APIs — this is the performance gainers/losers board.

Uptime

50.0%

Latency

117ms

Subs

4,583

Live Wikipedia editing activity as an API — a read on who is editing Wikipedia and what they are changing, served from the official MediaWiki API. It returns the firehose of recent edits across any language Wikipedia (page title, editor, edit summary, byte change, timestamp, and bot/minor/new flags), the profile and contribution stats of any editor (total edit count, registration date, account age and user groups), and an editor's own recent edits. Multilingual across the major Wikipedias. The contributor-and-edits layer for the world's encyclopedia, for social, research and dashboard apps. Live, no key, no cache. Distinct from Wikipedia content and search APIs and from pageview (reader) APIs — this is the live editing activity and the people behind it.

Uptime

100.0%

Latency

823ms

Subs

4,672

Live financial futures as an API — front-month prices for the major US index and Treasury futures, served from Yahoo Finance. For any contract it returns the current price, the previous close, the absolute and percentage change on the day, the day's high and low, the 52-week high and low, the contract month and the currency. Index futures (E-mini S&P 500, Nasdaq-100, Dow, Russell 2000) trade nearly around the clock and are the market's go-to read on where the open is heading; Treasury futures (2-, 5-, 10- and 30-year notes and bonds) track interest-rate expectations. Look a contract up by name or ticker alias, pull a category board (index or rates) ranked by the day's move, or get the whole board in one call. The futures-quote layer for trading, pre-market and dashboard apps. Live, no key, no cache. Distinct from spot index APIs and from the physical-commodity futures API — this is financial (index and rate) futures.

Uptime

100.0%

Latency

561ms

Subs

4,010

Live Bitcoin halving countdown and supply schedule as an API, computed from the on-chain block height (mempool.space). Bitcoin's block subsidy halves every 210,000 blocks (~four years); this returns the current subsidy in BTC, the halving epoch, the next halving's block height, how many blocks and roughly how long remain (using the network's recent average block time), and the estimated date. It also computes the circulating supply mined to date from the issuance schedule, the percent of the 21-million cap already mined, the daily and annual new issuance and the inflation rate, plus the full halving schedule. The Bitcoin issuance-and-halving layer for crypto, dashboard and countdown apps. Live, no key, no cache. Distinct from fee and mempool Bitcoin APIs — this is the supply and halving schedule.

Uptime

100.0%

Latency

111ms

Subs

3,756

Live profile, project and engagement data from Scratch, MIT's massive creative-coding platform where millions of young creators share interactive projects — served from the public Scratch API. Look up any user for their profile (join date, country, bio and "what I'm working on"), open any project for its engagement stats (views, loves, favourites and remixes) with author and dates, list a user's shared projects with their stats and totals, or search the shared projects. The creative-community-and-engagement layer for social, edtech and dashboard apps. Live, no key, no cache. Distinct from generic coding or game-catalogue APIs — this is the live Scratch community.

Uptime

100.0%

Latency

218ms

Subs

4,383

Live US Treasury yield curve as an API — US government bond yields across the curve, served from Yahoo Finance. It returns the current yield (in percent) for the 3-month, 2-year, 5-year, 10-year and 30-year Treasuries with their daily change in basis points, the shape of the curve (steep, normal, flat or inverted), and the key spreads traders and economists watch — the 10y-2y and 10y-3m spreads, whose inversion has preceded every modern US recession — plus an inverted flag. Get the whole curve, a single maturity's yield, or the spread between any two maturities. The interest-rate and recession-signal layer for trading, macro-research and dashboard apps. Live, no key, no cache. Distinct from US Treasury fiscal-data APIs (which track national debt and issuance) — this is the live market yield curve.

Uptime

100.0%

Latency

119ms

Subs

4,915

Live crypto tokenomics — supply and dilution metrics for any cryptocurrency, powered by CoinGecko. For any coin it returns the circulating, total and maximum supply, the percentage of the maximum supply already issued, the market cap and the fully-diluted valuation (FDV), and the market-cap-to-FDV ratio — the share of supply already unlocked — together with the dilution overhang, the percentage of FDV still locked or yet to be minted. It can also rank the top coins by dilution overhang (which assets have the most future supply hanging over them) or by how much of their cap is issued. The supply-and-dilution layer that token research, due diligence and risk dashboards need. Live, no key, no cache. Distinct from price, market-cap and all-time-high APIs — this is the tokenomics analytic.

Uptime

50.0%

Latency

145ms

Subs

3,916

Live OpenStreetMap community and contribution data as an API — the people and the edits behind the collaborative free world map, served from the official OSM API. Look up any mapper by their user id for their profile (display name, account age, total changesets and GPS traces, roles), pull a user's recent changesets — each edit batch with its comment, the editor used, and how many map features it created, modified or deleted — or read the open and resolved map notes, the community feedback pins, inside a geographic bounding box. The OSM contributor-and-edits layer for mapping, community and dashboard apps. Live, no key. Distinct from geocoding, routing and map-tile APIs that merely consume OpenStreetMap data — this is the OSM community and editing activity itself.

Uptime

100.0%

Latency

357ms

Subs

4,974

Live stock quotes as an API — the current price of any listed equity or ETF, served from Yahoo Finance. For any ticker it returns the current price, the previous close, the absolute and percentage change on the day, the day's high and low, the 52-week high and low, the trading volume and the listing exchange and currency. Look a stock up by ticker or by company name, pull a batch of tickers in a single call for a watchlist, or search for a company to find its symbol. Works for US and international equities and ETFs. The live equity-quote layer for trading, portfolio and dashboard apps. Live, no key, no cache. Distinct from index constituent-directory APIs (which list the members of an index) — this returns the live quote, not the member list.

Uptime

100.0%

Latency

151ms

Subs

4,901