Catalog

Track whale wallet movements, accumulation patterns, and sentiment across blue-chip NFT collections

Upcoming NFT mints with hype scoring, sellout probability, and risk assessment

Detect below-floor NFT listings and instant flip opportunities with urgency scoring

NFT trading volume heatmaps, volatility analysis, and optimal entry timing by day and hour

Track NFT influencer purchases, shills, market impact, and win rate history

Cross-marketplace NFT arbitrage with fee-adjusted P&L across OpenSea, Blur, and X2Y2

https://api.x402node.dev/chain/btc-balance

https://api.x402node.dev/chain/eth-balance

https://api.x402node.dev/chain/eth-tx

Look up arXiv preprint metadata

Look up arXiv preprint metadata. Returns title, authors, abstract, publish/update dates, categories, PDF URL, DOI, comme

Convert any DOI to BibTeX format via doi.org content negotiation

Convert any DOI to BibTeX format via doi.org content negotiation. Returns ready-to-paste BibTeX entry. Use ?doi=10.1038/

Look up scholarly metadata for any DOI via CrossRef

Look up scholarly metadata for any DOI via CrossRef. Returns title, authors, journal, publication date, abstract, citati

Format any DOI into a styled citation (apa, mla, chicago, ieee, harvard, vancouver)

Format any DOI into a styled citation (apa, mla, chicago, ieee, harvard, vancouver). Returns plain-text bibliography str

https://api.x402node.dev/color/contrast

https://api.x402node.dev/color/hex-to-rgb

https://api.x402node.dev/color/random

Monitor stablecoin peg deviation, collateral health, and depeg risk in real time

https://api.x402node.dev/feed/discover

https://api.x402node.dev/feed/parse

https://api.x402node.dev/feed/podcast

https://api.x402node.dev/finance/convert

Crypto price history over a window (CoinGecko free)

Crypto price history over a window (CoinGecko free). Returns daily price series (open/close per day), market cap, volume

https://api.x402node.dev/finance/crypto

https://api.x402node.dev/finance/forex