All projects on Base matching “data”

Aurifex Macro Open Data — taux 10 ans US et indice dollar large Fed (open data)

Compute a keyed HMAC of some data with a secret key — the standard way to sign and verify webhooks (Stripe, GitHub, etc.) and API requests. Data and key may each be utf8/hex/base64/base64url; the tag is returned as hex/base64/base64url.

Crypto funding-rate extremes screener: scans all 17 perpetual futures markets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT/HYPE). Uses z-score (30-day baseline) to identify statistically extreme funding: |z|≥2 = extreme, |z|≥3 = critical. Returns only assets clearing the threshold. Real-time from Kronos market_signals (OKX data). Pay-per-call via x402.

Robinhood Chain buyer bursts from the last 1-240 minutes, on every ETH-quoted Uniswap v4 and v3 pool created on the chain in the last 24 h. Each burst carries net ETH inflow, buy and sell swaps, scripted vs spread buying, pool age and a rug check (who held the pool's liquidity at the signal); outcomes are scored 30 minutes after the signal. Data rewritten every 20 s (<= 30 s behind the chain); dat

Live Amazon offer and inventory data for up to 10 ASINs: every active offer with seller, price, shipping and condition, which one holds the buy box, and optionally the real purchasable stock quantity. Built for repricing, buy-box monitoring and stock-out alerting across 23 marketplaces.

Compact BTC funding regime state from a four-venue normalized surface: regime label, surface median, 30d z-score, same-sign share, spread, dispersion, venue count, freshness. Ed25519-signed. Data, not advice.

AI Voice - Pharma - Rheumatology: Psoriatic Arthritis & Ankylosing Spondylitis - Argentina 2026 (mini) (Voz IA - Farma - Reumatologia: artritis psoriasica y espondilitis anquilosante - Argentina 2026 (mini)). Full study in one call: question-universe design, 114 raw AI answers (4 models), 7 analysis tables with Lightning metrics, 20 findings with evidence. Spanish-language data from Argentina, run

Official government and open data API: 94 public sources in one endpoint, 51 real-time, across India, Europe, Asia, Africa and Latin America. India: disaster alerts, CPI inflation, GDP, jobs, IFSC. World: earthquakes, weather forecasts and warnings, train and transit departures, flight and ship tracking, fuel and electricity prices, exchange rates, public tenders, company registries, geocoding, pu

Give this API a web address and it will visit that page, then hand back everything an SEO professional needs to know: the page title, meta description, meta keywords, robots instructions, canonical link, H1/H2/H3 headings, how many links are on the page, and the HTTP status code. No setup required — just paste a URL and get structured data back in under two seconds.

Multi-source social+dev data query (dynamic per-request USDC price)

Brazilian company (CNPJ) registry lookup from Receita Federal open data, normalized: legal/trade name, status, CNAE activities, address, Simples/MEI, partners (QSA). Supports alphanumeric CNPJ.

US drug overdose deaths by state - latest 12-month CDC provisional counts for fentanyl, opioids, heroin, cocaine and meth, with year-on-year change

Google Trends related queries for a keyword: the searches people run alongside it in a country — top queries scored 0-100 and rising queries with percentage growth, over a time window from the past hour to 2004-present. Keyword expansion for SEO keyword research, content planning and spotting breakout search demand early.

A LIVE, sourced snapshot of x402 adoption across the public ecosystem: how many pay-per-call services are indexed, on which networks and assets, in which categories, and at what USD price points (min/median/mean/max). Aggregated live from 402index.io, the Coinbase CDP Bazaar and the PayAI Bazaar; every figure carries its source URL and a fetchedAt timestamp. No fabrication - down sources report nu

AI IMAGE GENERATION — POST {prompt} and get back a PNG, base64 in JSON (?raw=1 for raw bytes). Gemini 2.5 Flash Image (nano-banana): photoreal scenes, illustrations, product shots, UI mockups — renders text in images well. Optional {aspect_ratio}: 1:1 (default), 16:9, 9:16, 4:3 + 6 more. Reference images: pass {url} or {image_base64}, or up to 3 in {reference_images}, to edit, restyle, or compose

Details for one on-chain DeFi lending pool (Aave v3, Compound v3, Moonwell, Morpho Blue) by pool id protocol:chain:token_address: supply APY, borrow APY, utilization, TVL and 0-100 risk score. Example: pool_id=aave-v3:base:0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 (Aave Base USDC). Pool ids come from /v1/lookup/yields results. Refreshed about every 30 min

Is this address sanctioned? Screens a crypto address against the US Treasury OFAC SDN list's published digital currency addresses (ETH, USDC, USDT, XBT, SOL, TRX and others): the listed entity, programs and listing date on a match, or not found as of the list date. Adds whether it is a wallet (EOA) or contract on Base, Ethereum, Arbitrum, Optimism or Polygon, or a wallet or program-derived address

Re-check up to 5 tokens you hold or watch in one call, on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: each token's 0-100 risk score, level, reason codes, price, liquidity and a fingerprint. Send the fingerprints back as since to get what changed (new risks, owner or authority changes, liquidity or price moves of 10%+) and a short list of alerts. One price for the whole list, made for po

Historical crypto price on a specific date — price, market cap and 24h volume snapshot for any coin by CoinGecko id, in USD or more.

FOMO's best traders for the period (24h, 7d, 30d or all time), best first. Each entry is the trader's profile (handle, user id, Solana and EVM wallets, picture, follower and trade counts, top holdings) plus rank and pnl for the period (also in FOMO's field pnl24h, pnl7d, pnl30d or totalPnL). This is all FOMO publishes: 150 entries per period, 100 all-time, no paging. Ranks beyond that are per user

Tax-ID / VAT-number validation for Pan-African countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup

Tax-ID / VAT-number validation for European countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup

Tax-ID / VAT-number validation for Asian countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup

Tax-ID / VAT-number validation for Latin American countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup

Tax-ID / VAT-number validation for Middle Eastern countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup

Top DeFi yield pools with APY/TVL, filterable by chain (DefiLlama).

Tax-ID / VAT-number validation for Australasian countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup

Forward geocode a free-text address, place name, or city (e.g. "Tokyo, Japan") into geographic coordinates — latitude and longitude — plus its IANA timezone. Use this to convert a location description into coordinates for mapping, distance, or timezone-aware lookups, or as the first step before coordinate-based endpoints like weather forecasts.

Brazil macro snapshot in one call: SELIC policy rate, CDI, IPCA inflation (monthly and 12-month), official PTAX USD/BRL. Source: Central Bank of Brazil (BCB).

Fee inputs for the next transaction: gas ladder for Base or Ethereum (slow/normal/fast, priority fee, max fee, EIP-1559 base fee) or the priority-fee ladder for Solana, plus the native token price. One call for the numbers a transaction builder needs.