the402 x402 endpoint directory

Decentralized exchanges ranked by 24h spot volume with 7d, 30d, 1y and all-time volume, change, the chains each trades

Live yield opportunities across DeFi, filterable by chain, protocol, token symbol, stablecoin-only, minimum TVL and mi

Every DEX pair trading a Solana token mint (Raydium, Orca, Meteora, Pump.fun AMM and the rest), sorted by liquidity: p

Every listed perpetual futures market in one call: mark, oracle and mid price, 24-hour change, funding (hourly, 8-hour

Search Farcaster users by name or username fragment. Returns up to 10 compact profiles: fid, username, display name, b

Protocols ranked by fees paid by users or by revenue kept, with 24h, 7d, 30d, 1y and all-time totals, change, category

Executable swap quote on Solana from Jupiter's aggregator: input and output mint, amount in base units, slippage in bp

Basis for one perpetual: mark versus oracle premium in percent and basis points, impact premium, current funding and t

Composite crypto market sentiment: the Fear & Greed index (value, classification, trend) blended with aggregated news-

Crypto Fear & Greed Index: the market Fear & Greed value, classification and trend, blended with aggregated crypto new

Composite crypto market sentiment: the Fear & Greed index (value, classification, trend) blended with aggregated news-

Composite crypto market sentiment: the Fear & Greed index (value, classification, trend) blended with aggregated news-

Current US weather conditions (temp in C+F, humidity, wind, pressure, description) from the NWS for coordinates OR a U

Reverse a 4-byte function selector, an event topic hash, or raw calldata into its human-readable signature using the 4

Cheap structural IBAN validation: ISO 13616 checksum + per-country structure/length. Returns valid plus, on rejection,

Resolve a Farcaster identity to its verified on-chain wallets. Give one of fid or username and get every cryptographic

US capital gains tax estimate: long-term 0/15/20 percent rates or short-term ordinary rates, plus the net investment i

US payroll tax estimate: Social Security and Medicare on wages, or self-employment tax, including the additional Medic

Portfolio risk metrics over an array of periodic returns: value-at-risk, conditional VaR, Sharpe, Sortino, max drawdow

Black-Scholes European option calculator: fair price, all greeks (delta, gamma, vega, theta, rho), or implied volatili

Look up a packaged product by GTIN/barcode via Open Food Facts (global). Returns the normalized nutrition profile plus

Full normalized nutrition profile for a USDA FoodData Central food by fdc_id: calories, macros and micronutrients per

Static security scan of a single text or prompt blob: hidden unicode, prompt injection, data-exfiltration directives,

Check whether a crypto address appears on the official public sanctions lists (OFAC SDN, UK, EU, UN). Deterministic ex

Hacker News engagement / dev-sentiment for a project or topic: story count, total & average points and comments, and t

Discover and parse a site's sitemap: pass a site root (found via robots.txt or /sitemap.xml) or a direct .xml. Returns

ABI-encode a function call (selector + args) or encode/decode arbitrary ABI types — build and parse EVM calldata corre

Verify an EIP-191 personal_sign or EIP-712 typed-data signature and recover the signer address from public inputs (mes

Is an address a contract or an EOA on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base)? Returns is_co

Check whether a password has appeared in known data breaches, using k-anonymity: the password is hashed locally and on

Live currency conversion using European Central Bank reference rates (via Frankfurter). Converts an amount between two

Locus public pay-per-use API

Web content extraction for agents at the lowest price in this catalog tier: pass a URL, get the readable content as cl

Match normalized agent intents to endpoint contracts with explainable constraints.

Forecast aggregate Bazaar demand by endpoint category with bounded evidence and confidence.

Domain name brainstorming and availability screening: combine keywords into candidate domains across chosen TLDs, then

Look up open buyer RFQs for $0.003 USDC. Call when you need live demand with public task contracts, USDC ceilings, dea

Ethereum Up or Down 30-Minute Probability estimates p_up and p_down for half-hour windows using the widest caller-supp

Ethereum Up or Down 15-Minute Probability estimates p_up and p_down for quarter-hour windows using a broader caller-su

Ethereum Up or Down 5-Minute Probability estimates p_up and p_down for rapid near-close windows where the freshest sup

Bitcoin Up or Down 30-Minute Probability estimates p_up and p_down for half-hour windows using the widest caller-suppl

Bitcoin Up or Down 15-Minute Probability estimates p_up and p_down for quarter-hour windows using a broader caller-sup

Bitcoin Up or Down 5-Minute Probability estimates p_up and p_down for rapid near-close windows where the freshest supp

Decode a 3-char WMI via NHTSA vPIC for $0.003 USDC into manufacturer and vehicle type. Call when you need this bounded

Multilingual RAG reranking API for agents: rank 2-16 passages, tools, routes, search results, or support answers again

Stock market snapshot API. Get a live/latest US equity quote plus recent daily OHLCV price bars for a ticker symbol.

OpenAI-compatible text-to-speech endpoint (input, voice, response_format) for drop-in use with existing OpenAI TTS cli

Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, u

Text-to-speech synthesis in 1 of 10 standard voices (M1-M5 male, F1-F5 female) across 31 languages, for longer text fr

Kristo Intelligence - paid API data (/api/v1/signal)