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api.x402node.dev
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Real-time forex / exchange rates from the European Central Bank (via Frankfurter). Pass from=USD and to=EUR (or batch to=EUR,GBP,JPY,CNY). Returns rates, inverse rates and last-update date. For AI agents needing exchange rate, currency conversion, fx rate and forex data. 实时外汇汇率,支持批量与反向汇率。 Accepts p… summarised by us
What it offers
Capability areas grouped from this host’s own URL structure.
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- api.x402node.dev
DNS records for a domain: A, AAAA, MX, NS, TXT, SOA, CAA. Use ?domain=example.com. Built for DNS audit and email infrastructure verification. Accepts payment on
- api.x402node.dev
Live Aave V3 lending markets ranked by TVL with supply APR, utilization, max LTV, liquidation threshold and penalty per asset - real-time rates and risk paramet
- api.x402node.dev
Hex to HSL converter, hue saturation lightness, HSL color picker, hex to hsl, RGB to HSL, color space conversion, CSS hsl(), color theory. Convert hex color int
- api.x402node.dev
Search PubMed biomedical literature via NCBI and return article title, authors, journal, year, PMID and link for each match. pubmed search, biomedical papers, m
- api.x402node.dev
List the ERC20 tokens an address holds on Base with symbol, decimals and formatted balance for each nonzero position. wallet tokens, token holdings, wallet port
- api.x402node.dev
Estimate the USD cost of a transaction (transfer, ERC20 transfer, approve, swap, NFT mint) on Base/Ethereum/Arbitrum/Optimism/Polygon from live gas price and na
- api.x402node.dev
Real-time gas estimates from the pending block base fee with slow/standard/fast tiers in gwei on EVM chains. mempool gas, pending gas, gas estimate, current gas
- api.x402node.dev
Check whether a smart contract's source code is verified on the block explorer, with contract name, compiler and proxy status across Ethereum/Base/Arbitrum/Opti
- api.x402node.dev
Bitcoin address balance and stats via blockstream.info (no key). Returns confirmed/unconfirmed sats and BTC, tx count. Use ?address=bc1... or 1.../3.... Built f
- api.x402node.dev
Resolve ENS names to Ethereum addresses and reverse resolve addresses to their primary ENS name on mainnet. ens resolve, ens lookup, ens name to address, revers
- api.x402node.dev
Extract dominant colors from an image URL via 64x64 downsample + 3-bit-per-channel quantization. Returns top N colors as hex/rgb plus frequency. Use url param (
- api.x402node.dev
Password breach check via Have I Been Pwned, HIBP API, k-anonymity, SHA-1 hash prefix lookup, known compromised passwords. Privacy-safe: only hash prefix sent.
- api.x402node.dev
Duration calculator, time difference, elapsed time, days between dates, hours between times, age calculator, how long ago, countdown, time span. Compute the dur
- api.x402node.dev
Check the ERC20 allowance an owner has granted a spender, returns raw and formatted amount with token symbol and decimals on five EVM chains. token allowance, e
- api.x402node.dev
Interest calculator, compound interest, simple interest, loan payment, mortgage calculator, annuity, APR APY, future value, present value, investment return. Co
- api.x402node.dev
Current weather for a coordinate via Open-Meteo. Returns temperature, humidity, wind, precipitation and weather code with description. Pass lat and lng. For AI
- api.x402node.dev
HMAC calculator, HMAC-SHA256 SHA512 SHA1 MD5, message authentication code, hash with secret, signed hash, API request signing, webhook signature, JWT signature.
- api.x402node.dev
Password strength estimator, score 0-4, zxcvbn-style heuristics, crack time, weak password detection. Returns score, feedback, estimated crack time. Accepts pay
- api.x402node.dev
code formatter, prettier, code beautifier, JavaScript formatter, TypeScript formatter, JSON formatter, HTML formatter, CSS formatter, Markdown formatter, YAML f
- api.x402node.dev
Comprehensive NPM package safety report combining npm registry metadata, OSV vulnerability database, npms.io quality scores, and GitHub repo health. Returns ris
- api.x402node.dev
Timezone lookup for a coordinate via timeapi.io. Returns IANA timezone, current local time, UTC offset, DST status. Use ?lat=37.78 and lng=-122.42. Built for AI
- api.x402node.dev
Transaction count (nonce) for an address across 7 EVM chains, including pending vs confirmed to reveal stuck mempool transactions - agents need the correct nonc
- api.x402node.dev
Total supply, name, symbol and decimals for any ERC20 token contract on Ethereum, Base, Arbitrum, Optimism or Polygon. token supply, erc20 total supply, circula
- api.x402node.dev
Top token holders and whale concentration for an ERC20 on Base, estimated from recent Transfer events, with each holder's percentage. token holders, holder dist
- api.x402node.dev
One-call market snapshot for a crypto asset: fear & greed sentiment, perpetual funding rate, open interest and recent liquidations aggregated in a single respon
- api.x402node.dev
ERC20 token metadata lookup on Base or Ethereum, returns name, symbol, decimals and total supply for a token contract address. token metadata, erc20 info, token
- api.x402node.dev
Cross-validated token price aggregated from multiple independent sources (Moralis, DefiLlama) with spread and a reliability rating that flags manipulation or il
- api.x402node.dev
Query Open Source Vulnerabilities (OSV) database for known CVEs in an NPM package. Returns vulnerability list with severity, summary, affected version ranges, f
- api.x402node.dev
Compare two texts and return cosine and Jaccard similarity scores with the top shared keywords, useful for duplicate and near-duplicate detection. text similari
- api.x402node.dev
Compute the 4-byte function/error selector and full keccak topic from a solidity signature, e.g. transfer(address,uint256). For decoding tx input prefixes and m