the402 x402 endpoint directory

Solana futures term structure — basis, annualized carry, contango/backwardation for calendar spread trading — Ed25519

ETH futures term structure — carry curve across Deribit, OKX, Bybit — Ed25519 signed attestation

BTC futures term structure — basis, annualized carry, contango/backwardation across 3 exchanges — Ed25519 signed attes

Solana SVI volatility surface parameters — stochastic vol interpolation for options model calibration — Ed25519 signed

ETH SVI surface — arbitrage-free fitted IV across all expiries — Ed25519 signed attestation

BTC SVI surface — Gatheral 2004 arbitrage-free IV parameterization with smooth smile interpolation — Ed25519 signed at

MSXI Ethereum market sentiment index — funding rate, long/short ratio, open interest momentum and liquidation signals

Solana implied volatility surface — full strike and expiry IV grid for options pricing and hedging — Ed25519 signed at

ETH multi-exchange IV surface with divergence detection — Ed25519 signed attestation

BTC multi-exchange IV surface — per-strike IV from 3 exchanges with cross-exchange divergence detection and mispricing

SOL options Greeks — Bybit native Greeks for 246+ options — Ed25519 signed attestation

ETH options Greeks — cross-exchange consensus from 1822+ options across 3 exchanges — Ed25519 signed attestation

BTC options Greeks — cross-exchange consensus delta/gamma/theta/vega from 2130+ options across Deribit, OKX, Bybit — E

Cross-chain gas index — normalized transaction cost comparison across Ethereum, Base, Arbitrum, Polygon and Solana — E

Solana perpetual funding rate — cross-exchange aggregated funding for carry trades and sentiment — Ed25519 signed atte

Ethereum perpetual funding rate — cross-exchange aggregated funding for carry trades and sentiment — Ed25519 signed at

BTC/USD funding rate composite — 5 exchanges, OI-weighted + median, predicted rate, regime — Ed25519 signed attestatio

All DeFi lending rates — 7 protocols, 7 chains, on-chain — Ed25519 signed attestation

Get Prediction Market PnL by Market

SqueezeOS — Api Ftd Cycle Gme

SqueezeOS — Api Ftd Etf Basket Xrt

Pay the send-token execution fee (ERC-20 transfer)

Foresight API request

Foresight API request

Free weather data from Open-Meteo. Current temperature, conditions, wind for any location (default NYC, customizable v

Sanctions screening for NAMES, not wallets. Pass a person or company; get GO / HOLD / STOP against the official U.S. T

🆕 A smart account's gas can be paid by a PAYMASTER instead of the account itself — invisible to every 'does this wall

Smart-money wallet leaderboard from our tracker: eligible wallets ranked by skill score then 90d PnL. address, tier, s

npm package download counts for last-day, last-week or last-month, with the exact date range covered. Pass a package n

Real-time Bitcoin BTC spot price in USDT from Binance. AI agent price feed, low-latency crypto quote, market data API,

Top N crypto by market cap with price, 24h volume, 1h/24h/7d/30d % changes, fully diluted valuation, circulating suppl

IP geolocation lookup for the requesting IP. Returns country, region, city, timezone, ISP, ASN. Powered by ipwho.is. A

Tokens with the biggest smart-money net INFLOW (30d) from our tracker: buy/sell/net USD, unique traders, smart-money s

Email validation for <email>

Live crypto market intelligence from Binance spot data: price, 24h volume, RSI/MACD/EMA/ATR indicators, order block le

Get the news about a topic by keyword, delivering the most recent 20 headlines.

Shape a messy UI, copy, page or JSON blob into a guaranteed ship | fix | rewrite verdict.

ICP fit score and recommendation for a company profile

OCR extraction from scanned PDF documents (English). Uses Tesseract to read text from image-based pages that have no e

Get Smart Money DCAs Data

Get "Token God Mode" (TGM) perp positions data

Get Smart Money PnL Leaderboard

Get Historical Transactions for an Address (Beta)

minia2a service: x402-gas-price

Recent large USDC transfers on Base mainnet with auto-classification of sender and receiver addresses. Query parameter

Domain -> security letter grade (0-100, A-F) from HTTPS reachability, security headers (HSTS, CSP, X-Frame-Options, X-

Microgrid dispatch forecast — optimized PV/H2/battery plan + energy trade signal

Full structured invention record: concept, mechanism, materials, validation plan, sources, diagram, version history, e

Search for people using the CrustData API with extensive filters.

Bidirectional ENS + Basename resolution: POST { name } (e.g. vitalik.eth or jesse.base.eth) to resolve its address, or