Explain a cron expression (5 fields, names like mon-fri, or @daily) in plain English and list its next run times in any UTC offset. Use to check schedules before deploying jobs.

Write a late-fee reminder email for an overdue invoice. $0.01 USDC on Base per call. Calculates the late fee and returns a ready-to-send subject and body in a polite, firm or final tone. Bad input returns 400 and is not charged. Don't use this for sending email; it only returns text.

Blockchain IQ research on all 21 tracked blockchains in one parameter-free call: each chain's analyst lede and dated 'what the chain data shows' section (transactions, senders, fees, value moved against four weeks and a year earlier), with links to the full brief and the chain's dashboard. Bitcoin, Ethereum, Solana, XRP Ledger, Base, Arbitrum, BNB, TON and more. JSON, no API key. $0.50 per call. Blockchain IQ.

One coin's full Blockchain IQ research brief by research slug or CoinGecko id (130+ coins: bitcoin, ethereum, solana, xrp, chainlink, aave and more): what it is, how it has traded, who is behind it, tokenomics, chain data and recent coverage, every claim with its source. Full text as Markdown plus structured sections. Use for due diligence or to ground an answer about a coin. JSON with Markdown, no API key. $0.05 per call. Blockchain IQ.

Find why AI crawlers can't read a website, with paste-ready fixes. $0.05 USDC on Base per call. Crawls the homepage and up to 9 sitemap pages. Returns a score, grade and fixes covering robots.txt for 21 AI crawlers, AI bot blocks, browser vs crawler fetch gaps and JSON-LD checks. Don't use this for measuring brand mentions in AI answers; use /api/v1/report.

Validate and canonicalize one identifier: email, URL, E.164 phone, IBAN (mod-97), payment card (Luhn), UUID, SHA-256, git SHA, EVM address (EIP-55) or domain. Returns {valid, canonical, fingerprint}.

The current time, or a given time, in one or more IANA time zones, with UTC offset, abbreviation, whether daylight saving time is in effect, and the weekday. Give a local time with from_tz to convert it, handling DST correctly.

LLM inference API: OpenAI-compatible chat completions, send messages, get choices and usage. Cheap LLM inference for agents (Llama 3.1 8B), no key, no streaming.

Brazil economic indicators from the Central Bank of Brazil (SGS): Selic target, CDI (annual and daily), IPCA inflation (monthly and 12-month), USD/BRL. Each value with its reference date.

Most read Wikipedia articles in a language on a given day (yesterday by default): what people are looking up, with views and rank, technical pages removed. A signal of current events and trends.

Sentiment: a composite market-mood read for one symbol from our own pipeline: model lean, price momentum, and news tone (when our news feed has items). Each component is shown with its inputs. Experimental. Not financial advice.

Merges two or more lists of JSON rows (for example leads from Google Maps, a CRM export and a spreadsheet) into one list and removes the duplicates between them by a key such as phone, email or website, ignoring spacing, case and http/www. Keeps the most complete row, fills its blanks from the duplicates and labels which lists each record was in. Up to 500 rows in all. $0.001 per row sent, $0.002 minimum.

Circle USDC and EURC control events on Ethereum, Base and Arbitrum, newest first: blacklistings and reversals, pauses, minter allowances, role changes and proxy upgrades, each with block, time, transaction and address. Since a date (up to 90 days back), filter by chain, token and type, 500 a page. Use to monitor freezes and issuer control actions. From the contracts' own logs, refreshed daily. JSON, no API key. $0.02 per call. Blockchain IQ.

Daily Circle USDC or EURC history for one chain (Ethereum, Base, Arbitrum), up to 365 days: end-of-day supply, mints, burns, net issuance split CCTP / Gateway / other minters, control events and blacklist changes. Every day reconciles exactly (supply change = mints - burns); missing days are listed, never zero-filled. Use to chart stablecoin issuance and cross-chain flows. JSON, no API key. $0.02 per call. Blockchain IQ.

Search Android apps and games by name, publisher or package name across the APKCube catalogue of Google Play apps. Each match returns the package id, title, developer, icon, rating, installs, category and whether an APK download is available, with facet counts by type and category. Keyless pay-per-call in USDC on Base or Solana: no account or API key.

Parameter-free Circle USDC and EURC snapshot on Ethereum, Base and Arbitrum from the token contracts: total supply, 1/7/30-day supply change, 7-day net issuance split CCTP / Gateway / other minters, mint and burn counts, paused flag, implementation and last upgrade, role holders, blacklist count and 30-day changes, last control event. Use to watch stablecoin supply and freeze risk. Refreshed daily; never sold stale. JSON, no API key. $0.02 per call. Blockchain IQ.

The Ripple Review, parameter-free: Blockchain IQ's daily XRP and XRP Ledger report, newest edition. XRP price and market read, ledger activity, RLUSD growth, the spot XRP ETF line-up (Bitwise, Franklin, Canary, Grayscale, 21Shares) with the analyst's read, and the bullish and bearish signals. Use for XRP research, monitoring or summaries. JSON with Markdown, no API key. $0.10 per call. Blockchain IQ.

Every Blockchain IQ research report sold here in one parameter-free call: today that is the newest Ripple Review (XRP and the XRP Ledger). Analyst-written, every figure dated and sourced. JSON, no API key. $0.50 per call. Blockchain IQ.

Use this when a user or autonomous agent requests a current Ethereum (ETH) 4H crypto market decision with entry, liquidity-zone stop loss and take profit. Returns LONG, SHORT or NEUTRAL, confidence, R:R and nine indicators. Free, independently countable live-simulation evidence is available before purchase. Price: $0.03 USDC via x402 on Base Mainnet; no API key or account. Public evidence and purchase guide are linked in the response.

Pay-per-use AI audio transcription API. Transcribe short MP3 and WAV audio files using Whisper Large V3 Turbo. No account or API key required. Pay with USDC on Base. 0.02 USDC per request. Maximum 120 seconds and 2 MB; MP3 and uncompressed PCM WAV only. Returns JSON: text, detected language, duration and timestamped segments. Charged only when a transcript is returned.