Value a crypto portfolio such as {"BTC": 0.1, "ETH": 2}: current value and weight of each holding and total; with a start date, its value then, return, annualized volatility and maximum drawdown. Prices from DefiLlama.

Official data of any Spanish BOE item (rank, department, dates, subjects, repeal status) plus a clear AI summary in Spanish from a local model: what it is, who it affects, what it establishes and its deadlines.

Explain an EIP-712 typed-data signature before signing it: x402/EIP-3009 payment authorizations, EIP-2612 permits, Permit2 and Seaport orders. Flags unlimited allowances, long validity and non-official tokens, and returns the exact hash to compare with your wallet.

Company check (KYB) and company enrichment in one call, built from six official or primary sources: legal entity from the Global LEI Index (legal name, LEI, status, register number, founding date, legal and HQ address, other candidates), EU VAT number check against VIES, sanctions screening against the OFAC SDN, EU and UN lists, domain registration and email security (RDAP, MX, SPF, DMARC grade), website technology stack, and recent news.

Use when an agent needs the top x402 services tagged 'filings'. Returns Highest-demand x402 services tagged 'filings': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 56 providers and 144 paying wallets measured in this tag.

Access to api/v2/addresses/:address_hash/internal-transactions. List all internal transactions involving a specific address

Use when an agent needs the top x402 services tagged 'evm-deep'. Returns Deep view: top 100 x402 services tagged 'evm': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 153 providers and 254 paying wallets measured in this tag.

Use when an agent needs the top x402 services tagged 'erc20'. Returns Highest-demand x402 services tagged 'ERC20': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 9 providers and 9 paying wallets measured in this tag.

Use when an agent needs the top x402 services tagged 'volume'. Returns Highest-demand x402 services tagged 'volume': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 20 providers and 49 paying wallets measured in this tag.

Use when an agent needs the top x402 services tagged 'implied-volatility'. Returns Highest-demand x402 services tagged 'implied-volatility': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 4 providers and 12 paying wallets measured in this tag.

Use when an agent needs the top x402 services tagged 'glassnode'. Returns Highest-demand x402 services tagged 'glassnode': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 29 providers and 59 paying wallets measured in this tag.

Real-time crypto market news with sentiment analysis and top headlines ranked by importance, for $0.01 per call. One request, no parameters needed — get the latest market-moving stories as structured JSON, ready for trading agents and research pipelines. Relayed live from a proven upstream source; if the source is down you get a 503 and pay nothing. Pay per call in USDC on Base — no account, no API key.

Use for debugging an x402 client: pay $0.001 in USDC (or USDT0 on Arbitrum) on any network in accepts and get back what the server received: the decoded payment payload (scheme, network, authorization fields, signature), checks of amount, payTo, asset and validity window against this route's requirement, and the facilitator's settlement result. Only the payment header is echoed, never other headers.

Use for a short euro exchange rate history: daily ECB euro foreign exchange reference rates of one currency against EUR for up to the last 30 days (ccy=USD, days=1..30), with min, max and percent change over the window and a stale flag. Source attribution in every reply. Reference rates for information only, not transaction rates. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Use when an agent needs the full x402 service dataset. Returns complete dataset export: every listed service with 30-day calls, unique payers, price, network (compact keys, legend included)

Automated web accessibility audit of a page in a real browser with axe-core: every WCAG 2.2 level A and AA rule that can be tested automatically (missing alt text, unlabeled buttons and form fields, color contrast, keyboard traps, ARIA errors, missing page language, touch target size).

EURC peg monitor — unique combined signal: the official ECB euro reference rate (USD/EUR) versus the live on-chain EURC/USDC price from the deepest Uniswap v3 pool on Base, returned as a deviation in basis points with both source values and timestamps. Tells agents holding or pricing EURC how far the on-chain euro stablecoin trades from the official euro. No input required.

Use when an agent needs the top x402 services tagged 'inflation'. Returns Highest-demand x402 services tagged 'inflation': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 44 providers and 70 paying wallets measured in this tag.

Use when an agent needs the top x402 services tagged 'free'. Returns Highest-demand x402 services tagged 'free': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 200 providers and 200 paying wallets measured in this tag.

Use when an agent needs the top x402 services tagged 'momentum'. Returns Highest-demand x402 services tagged 'momentum': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 79 providers and 89 paying wallets measured in this tag.