Wallet balances with USD values on Base, Arbitrum, Ethereum or Optimism: native ETH plus USDC, USDT, WETH and the chain's major tokens, plus up to 10 extra token addresses you pass. Returns a USD total. Use before paying, bridging or reporting a portfolio.

Extractive summary (3 sentences) + top-5 keywords from any text.

The Papers, full edition: every dated world event (Wikipedia), every AI model release and new software version since your training cutoff.

Daily JSON bundles for agents: BTC/ETH volatility regime, crypto news with top x402 sellers, Brazil business calendar, x402 agent economy, Base chain gas, US macro (CPI, unemployment, SOFR). This route serves the us-macro-pulse bundle.

Korean business days: the date N business days after (or before) a date, skipping weekends and official Korean public holidays including substitute and temporary holidays (KASI list). Lists the holidays skipped.

Agent-SOFR — decentralized USD short-rate benchmark for AI agents. Weighted-median of 7 sources + variance + regime premiums. BNS-calibrated 6-mode classifier on 444k ETH/USDC 5-min bars (λ=1.097 closed-form). Open + IPFS-pinned methodology: agent-sofr-v1.

Coerces messy text (key=value lines, CSV-ish, sentences) into clean JSON.

Outbound transaction count (nonce) and contract-or-EOA check for an address on Base. Result carries a signed receipt.

A crypto fortune cookie: one short line of on-chain wisdom, picked by the latest Base block hash so anyone can verify the draw. For agent greetings, daily posts, games and demos of x402 payments.

Read a Korean web page as clean text: Naver Blog posts (inside the iframe), Naver News and Daum News articles, and generic pages, returned as title, author, published date, clean paragraphs, images and links. Deterministic extraction, no LLM. Naver Cafe is reported as unsupported.

Daily JSON bundles for agents: BTC/ETH volatility regime, crypto news with top x402 sellers, Brazil business calendar, x402 agent economy, Base chain gas, US macro (CPI, unemployment, SOFR). This route serves the agent-economy-pulse bundle.

Daily JSON bundles for agents: BTC/ETH volatility regime, crypto news with top x402 sellers, Brazil business calendar, x402 agent economy, Base chain gas, US macro (CPI, unemployment, SOFR). This route serves the base-chain-now bundle.

Quick pre-flight quality score: composite (0-100) + grade (A-F) + three framework sub-scores (PEEM, RAGAS, G-Eval) + verdict. Run upstream of any other paid call to filter weak prompts before inference. The cheapest gate on the AI input quality problem.

Count Korean business days between two dates (after from, up to and including to), excluding weekends and official Korean public holidays, with the holidays in range.

Debug your x402 client on Base mainnet for $0.001: returns the payment payload your client actually signed and sent, decoded: version, header used, scheme, amount, validity window, and whether it echoed extensions.bazaar (needed for Bazaar cataloging) and resource/accepted.

An EU VAT number check — VAT validity, and the VAT registration behind it. Relevant wherever a VAT number is being relied on or cited: the check reads the official VIES service (European Commission), keyless, and returns valid, invalid or unknown — an outage is never reported as invalid — with the member state, the register's own request date, and the trader identity only where that member state discloses it. GB is out of scope after Brexit; XI (Northern Ireland) is covered. Not tax advice.

Structured diff of two text blocks: per-line additions, deletions and changes, plus an identical flag. Use it to detect whether a contract, policy or spec changed between two fetches.

Finds similar/competitor domains by name-similarity. Lead-gen agents use this for prospecting.

Convert an HTML document to clean Markdown for LLM ingestion: strips scripts, styles and navigation chrome, preserves headings, lists, tables and links. Deterministic for identical input.

South African SA ID number validation: Structural validation of a South African identity number with safe decode: Luhn check digit, birth date, gender and citizenship segments (citizen or permanent resident). The structural step in KYC, KYB and customer onboarding or due diligence workflows: derive date of birth, age, gender and citizenship without storing the identity. Run it before a paid registry lookup rather than instead of one: