Find near-duplicate images. Computes perceptual hash distance between two image URLs to detect crops, resizes, re-compressions, and slightly edited copies of the same photo. Use for content moderation, copyright checks, and cleaning image datasets.

Which Base public RPCs serve a stale chain tip. Every 30s we ask all major public RPCs for eth_blockNumber in parallel and record how many blocks behind the fastest peer each was, plus latency and error rate. An RPC never reports its own lag, so an agent reading a balance from a lagging endpoint cannot tell. Omit ?rpc for the full map; ?rpc=<host> for one.

Get the global leaderboard of smart wallets

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Governance and parameter-change history, queued changes awaiting effect, feature switches, and guardian pause state. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

Offline structural validator for a Vietnamese Enterprise/Tax Code (Mã số thuế, MST). Strips spaces, checks the 10-digit head-office pattern or the 13-character branch pattern (10 digits + '-' + 3-digit sequence). Uses regex only since the official modulus-11 check-digit weight table is not consistently published.

For link audits: Extracts and categorizes all links on a page (internal, external, anchor) for SEO audits and site-structure analysis. Returns nofollow/rel attributes, anchor text, image links missing alt text, and external domain distribution. Obeys robots.txt. Supports GET & POST

Page speed API - Google PageSpeed Insights (Lighthouse) performance audit for a URL on mobile or desktop. Returns the performance score plus lab Core Web Vitals (LCP, FCP, CLS, TBT, Speed Index, TTI) and, where available, real-user (CrUX) field data. Data source: Google PageSpeed Insights.

Yield spread between investment-grade corporate bonds and equivalent Treasuries. Measures credit risk premium demanded by investors in high-quality corporate debt. Widens in stress, tightens in risk-on environments. Use for credit cycle analysis and risk appetite assessment. Daily frequency.

Adds top 20 holders, HHI concentration index, volatility metrics, slippage estimates to light token analysis.

ERC-20 token profile on any major EVM chain: on-chain metadata (name, symbol, decimals, total supply) read straight from the contract, joined with live DEX market data (USD price, liquidity, 24h volume, 24h change, and the top trading pair with its DEX). Use it to price a token, check liquidity depth before a swap, or resolve an unknown contract address into a real token.

Daily snapshots with direction indicators (improving/declining/stable) per metric.

Check a URL before you cite, visit or trust it: liveness, final URL and redirect chain, soft-404 detection, page title, domain registration age (RDAP), robots.txt policy for AI agents, and Wayback Machine snapshot availability. $0.002 per check.

Price a swap without building a transaction. Returns expected input, output, and gas without constructing an executable transaction. Quotes are informational and can change with liquidity and chain state.

Web search returning URLs, titles, and descriptions

Causal chain for arabica coffee: minimum temperature forecast 72h ahead over the southern Minas belt (frost is the event that historically moves KC hardest, operational threshold 3 °C) → consecutive dry days stressing flowering → observed rainfall → the official BRL/USD rate that converts the international price for the grower. Brazil is the top arabica exporter. Physical signal only: bring your own price. Free sample, no payment: https://api.brazilayer.com/v1/cadeias/amostra

Yield spread between high-yield (junk) bonds and equivalent Treasuries. The premier measure of credit stress and risk appetite in lower-quality debt. Spikes sharply in recessions and crises. Use for risk-off detection, credit cycle timing, and recession probability models. Daily frequency.

Median price of newly constructed homes sold in the U.S. Measures affordability trends in the new home market. Sensitive to mortgage rates and construction costs. Monthly frequency, useful for housing affordability and consumer wealth analysis.

Query real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for %), and supply_tvl (USD). Use for questions like 'best stablecoin yield', 'where to earn on USDC', 'compare lending rates', '稳定币利率'.

Federal Reserve index of real output from manufacturing, mining, and utilities. Covers roughly 15% of GDP but is highly cyclical and leads broader economic turns. Use for industrial recession detection and goods sector analysis. Monthly frequency.

Atlanta Fed real-time GDP growth estimate updated continuously with incoming data releases. Provides the most current read on current-quarter GDP before the official BEA estimate. Useful for nowcasting, growth surprise detection, and positioning ahead of GDP releases. Irregular frequency, updated on data release days.