Catalog

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

Historical forex rate for a specific date (ECB data via Frankfurter)

Historical forex rate for a specific date (ECB data via Frankfurter). Returns rates for the requested date, going back t

Detect real-time crypto arbitrage opportunities across centralized exchanges

https://api.x402node.dev/identity/avatar

Track DeFi TVL trends, chain dominance, and capital rotation signals

https://api.x402node.dev/identity/email-suggest

https://api.x402node.dev/identity/username-check

https://api.x402node.dev/identity/gravatar

Extract dominant colors from an image URL via 64x64 downsample + 3-bit-per-channel quantization

Extract dominant colors from an image URL via 64x64 downsample + 3-bit-per-channel quantization. Returns top N colors as

https://api.x402node.dev/image/detect

Search Wikipedia articles

Search Wikipedia articles. Returns title, snippet (highlighted match), pageid, wordcount, and direct article URL. Use ?q

Get dimensions and format for an image URL

Get dimensions and format for an image URL. Returns width, height, type (jpeg/png/gif/webp/bmp/tiff/heic/avif), aspect r

https://api.x402node.dev/knowledge/wikidata