Manylives

What AI agents look for that isn't served yet: tools, methods and paths that visiting agents requested at an open agent marketplace and got nothing, ranked by how many distinct agents asked (scanner junk excluded). Build what's missing.

Live US-dollar price of any Base network token, read directly from on-chain exchange pools (direct stablecoin pools and routes through wrapped ETH; the best quote wins). Returns price, route and pool fee tier.

One-call due diligence on a trading strategy: its record over 7/30/365 days and all time, the luck test, how it ranks in its book, overlap with its book's current top 20, the latest Merkle proof and commit-timing check. Historical only; general information, not advice.

Full agent-readiness report for a website or API: everything in the readiness audit plus a quality review of the agent card, OpenAPI document, llms.txt, MCP server (connects, tools, descriptions) and pay-per-call manifest (does a listed endpoint really answer 402), CORS for in-browser agents, and an AI-written prioritised fix plan.

Historical backtest of a basket of 2-20 trading strategies you choose: equal-weight daily return, compounded return before and after costs, hit rate, best and worst day, and worst drawdown over a past window. Historical only; general information, not advice.

Records of up to 100 trading strategies in one call (for backtesting agents): each one's return before and after costs, hit rate, periods, luck check and returns over 7/30/365 days, for a window you pick, optionally as of a past date. Past performance is no guide to the future; not advice.

How alike are 2-20 trading strategies? Correlation of their daily returns and how often their calls agree, over a past window, so a basket isn't the same bet several times. Historical only; general information, not advice.

Is a trading strategy's record skill or luck? Its hit rate against a coin flip (z-score and p-value), the same p-value adjusted for every strategy tested in its book (Holm), how it ranks against the book's coin-flip strategies, and how many more calls it would need to be significant. Historical, scored periods only; general information, not advice.

How a crypto strategy did in different market conditions: its daily results split into up vs down days and calm vs volatile days for Bitcoin (public price data), over a past window. Historical only; general information, not advice.

Review a code snippet: bugs, security issues, performance and readability problems, each with severity, the line it concerns and a concrete fix, plus an overall verdict.

Top pay-per-call (HTTP 402) services by real demand: seller income sampled from on-chain stablecoin payments, counting only sellers with 3+ distinct payers (filters out testing and farming).

Agent-readiness audit of a website: can AI agents and assistants find and use it? Checks llms.txt, agent card, MCP endpoint, OpenAPI, pay-per-call manifest, sitemap, and robots.txt rules for AI crawlers. Score, what was found, and fixes.

Daily strategies unlikely to be luck (advanced): daily calls that beat at least 90% of the coin-flip strategies over 30d, ranked by return. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Hourly strategies unlikely to be luck (advanced): hourly calls that beat at least 90% of the coin-flip strategies over 7d, ranked by return. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Monthly strategies unlikely to be luck (advanced): monthly calls that beat at least 90% of the coin-flip strategies over 1y, ranked by return. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Weekly strategies unlikely to be luck (advanced): weekly calls that beat at least 90% of the coin-flip strategies over 1y, ranked by return. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

5-minute strategies unlikely to be luck (advanced): 5-minute calls that beat at least 90% of the coin-flip strategies over 7d, ranked by return. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Beat every coin flip this month (advanced): 30-day return above every coin-flip strategy in its book, by return. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Comebacks (advanced): down over 30 days but up the most over the last 7 days. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best Sharpe over five years (advanced): highest Sharpe ratio over 5 years. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Five-year survivors (advanced): profitable over 5 years with a max drawdown better than -50%, by return. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best return per drawdown over a year (advanced): highest Calmar ratio (annual return / max drawdown) over the last year. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

High Sharpe over a year (advanced): Sharpe ratio of at least 1 over the last year, highest first. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Highest win ratio over a year (advanced): highest share of winning periods over a year, profitable overall. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Low-risk over a year (advanced): profitable over a year with max drawdown better than -20%, by Calmar. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

One-call token verdict for a Base network token: contract control (owner, upgradeable, concentration), live price and price impact of a 1,000-dollar sell, recent transfer activity, trend indicators, and perp funding when a market exists, with red flags, a risk level and a plain-language AI verdict. Data, not financial advice.

Find trading strategies meeting YOUR conditions over YOUR window: horizon (5m to 1 month), minimum return % or hit rate, minimum periods, coin-flip and luck limits, sort order. Plain words work, e.g. 'hourly crypto strategies up 5% this week after costs'. Results link to on-chain-verifiable records. Past performance is no guide to the future; not advice.

Read a public web page and return just the fields you name as JSON (e.g. price, author, date, address). Missing fields come back null; values are taken from the page, never invented. Respects robots.txt.

Find live autonomous AI agents by capability: agents from the ERC-8004 agent registry and A2A agent cards whose endpoints answered when checked. Returns names, descriptions and A2A/MCP endpoints.

Check a Base network token contract before your agent buys, accepts or lists it: live on-chain facts (name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable proxy, owner's and contract's own holdings, burned share) with red flags and a short AI verdict. Facts, not financial advice.

Inspect any MCP server like a client would: does it connect, which protocol version, does it need sign-in, how fast, how many tools, and which tools have missing or weak descriptions or input schemas. A checklist of fixes for server owners.

Check text before your agent reads or forwards it: prompt-injection attempts aimed at AI readers, and contact details (emails, phones, handles, links). Returns flags, a risk level and a cleaned copy.

Most accurate daily strategies (intermediate): daily calls, highest share of correct up/down calls over 30d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best daily strategies by return (intermediate): daily calls, highest return after costs over the last 30d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best daily strategies by Sharpe (intermediate): daily calls, highest Sharpe ratio (return per unit of volatility) over 30d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Safest profitable daily strategies (intermediate): daily calls, profitable over 30d, smallest max drawdown. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Most accurate hourly strategies (intermediate): hourly calls, highest share of correct up/down calls over 7d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best hourly strategies by return (intermediate): hourly calls, highest return after costs over the last 7d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best hourly strategies by Sharpe (intermediate): hourly calls, highest Sharpe ratio (return per unit of volatility) over 30d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Safest profitable hourly strategies (intermediate): hourly calls, profitable over 7d, smallest max drawdown. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Most accurate monthly strategies (intermediate): monthly calls, highest share of correct up/down calls over 1y. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best monthly strategies by return (intermediate): monthly calls, highest return after costs over the last 1y. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best monthly strategies by Sharpe (intermediate): monthly calls, highest Sharpe ratio (return per unit of volatility) over 1y. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Safest profitable monthly strategies (intermediate): monthly calls, profitable over 1y, smallest max drawdown. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Most accurate weekly strategies (intermediate): weekly calls, highest share of correct up/down calls over 1y. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best weekly strategies by return (intermediate): weekly calls, highest return after costs over the last 1y. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best weekly strategies by Sharpe (intermediate): weekly calls, highest Sharpe ratio (return per unit of volatility) over 1y. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Safest profitable weekly strategies (intermediate): weekly calls, profitable over 1y, smallest max drawdown. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Most accurate 5-minute strategies (intermediate): 5-minute calls, highest share of correct up/down calls over 7d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best 5-minute strategies by return (intermediate): 5-minute calls, highest return after costs over the last 7d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Best 5-minute strategies by Sharpe (intermediate): 5-minute calls, highest Sharpe ratio (return per unit of volatility) over 30d. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Safest profitable 5-minute strategies (intermediate): 5-minute calls, profitable over 7d, smallest max drawdown. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Most consistent (beginner): highest share of winning periods over 30 days, profitable overall. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Steady earners (beginner): profitable over 30 days, ranked by the smallest worst drop (max drawdown). Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Top crypto strategies this month (beginner): highest return after costs over the last 30 days. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Top crypto strategies this week (beginner): highest return after costs over the last 7 days. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Top crypto strategies this year (beginner): highest return after costs over the last year. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Top crypto strategies today (beginner): highest return over the last day, any horizon. Ready-made list, no settings: top 10 with full stats for every window from 5 minutes to 5 years (hit rate, return, win ratio, max drawdown, Sharpe, Calmar), runner-ups and current leaders. On-chain verified where covered, else simulated*. Past performance is no guide to the future; not advice.

Classify a text into topic categories: from your own list of labels, or open topics if none given, with confidence.

Named entities in a text: people, organisations, places, dates, money amounts, products and other notable items, each with its type and how many times it appears.

Pull structured fields out of free text: name the fields you want and get JSON back (missing fields come back null). For invoices, emails, listings, bios and more.

Extract the key words and phrases from a text, most important first, with a one-line topic.

Turn a text into a structured outline: title and sections with key points, faithful to the text.

Remove personal information from a text before your agent stores or shares it: emails, phone numbers, names, street addresses, IDs and card numbers are replaced with labels.

Rewrite a text in a requested style (clearer, shorter, formal, friendly, plain English…) keeping its meaning.

Sentiment of a text: positive, negative, neutral or mixed, a score from -1 to 1, the emotions present and a one-line reason.

Summarise text into a short, faithful summary (optionally in a target language and word limit).

Translate text into any language, with the source language detected and tone and formatting kept.

Find a tool for a job across thousands of public MCP servers we have visited and checked: search by capability and get matching tools with their server, endpoint and description, best matches first.

An embeddable SVG card of a trading strategy's verified record (return, hit rate, periods, luck check) with links to its record and on-chain proofs, plus the same data as JSON. Historical only; general information, not advice.

The books in the ManyLives track record: each market, segment and horizon with how many strategies it holds, its latest on-chain commit and how many periods have been committed.

What changed in the ManyLives track record since a time you give: new on-chain commits and newly scored periods per book, and the current top 5 per book over the last 7 days. Poll it instead of subscribing. General information, not advice.

Every on-chain commit of the ManyLives track record: per book and period, the Merkle root of all strategies' calls, the Base network transaction and its block time, and whether it landed before the period started.

Full verified record of one trading strategy: daily results (return, hit rate, periods), every period for daily and slower books, the on-chain commits, and returns over 7/30/365 days and all time. Past performance is not an indicator of future performance; not advice.

Browse the strategies in the ManyLives track record by book, market, segment or horizon (ids only; strategy logic is never published), 500 per page, with return and periods scored over a window.

Proof that a book's calls for a period were locked before the period started: the Base network transaction, its block time read live from the chain, the period start, and the margin in seconds. Use it to confirm no result was recorded after the fact.

Top trading strategies by return % over the window you pick (1d, 7d, 3m, 1y, all, or since a date) for ~90 crypto coins at 5-minute to monthly horizons. Every call was locked on the Base network before its period and scored by ManyLives: return before and after costs, hit rate, a luck check against coin flips. Logic stays private. Past performance is no guide to the future; not advice.

Check one strategy's calls for one period without trusting ManyLives: its revealed calls and salt, the recomputed hash, the Merkle proof to the root, and the Base network transaction that locked that root before the period started, with a short script anyone can run.

On-page SEO audit of a live URL: a 0-100 score with each check (title and description length, one H1, canonical, language, viewport, social tags, image alt text, indexability, HTTPS, content length) and what to fix.

Chat completion from an open AI model (Llama 3.3 70B by default; Llama 3.1 8B for speed), no account or API key: send messages (or a prompt), get the model's reply. Up to 24,000 characters in and 1,024 tokens out per call.

Recent event logs of a Base network contract (up to 1,000 blocks back, 200 events), with token Transfer and Approval events decoded (from, to, amount).

Large US-dollar stablecoin transfers on the Base network in recent blocks (default 100,000 dollars and up): from, to, amount, block and transaction, biggest first.

Technical indicators for a crypto asset from daily prices: SMA 20/50/200, EMA 12/26, MACD, RSI 14, 30-day volatility and drawdown, with a plain trend label. Analysis aid, not financial advice.

Top stablecoins by circulating supply: price, deviation from peg, peg type, supply in US dollars and number of chains; flags any that have lost their peg.

Health check for an npm or PyPI package before your agent installs it: latest version and release date, weekly downloads (npm), licence, repository, and known security vulnerabilities for a given version.

Live prediction-market odds: the most traded open markets (or those matching your search) with each outcome's implied probability, volume, liquidity and end date.

Inspect any pay-per-call (HTTP 402) endpoint before you pay: decodes its payment terms (version, network, asset, price in dollars, payee), checks the listing metadata, and lists problems that make agents fail.

Search scholarly papers: title, year, first authors, venue, citation count, DOI and a free full-text link when one exists, most relevant first.

Search official US recall and enforcement reports for food, drugs or medical devices: product, reason, classification (severity), firm, status and date.

Explain or verify a Base network transaction: status, from/to, native value, fee, every token transfer (with symbols and amounts) and a one-line plain summary. Use it to confirm a payment arrived before delivering work.

Profiles for up to 10 Base network wallets in one call: wallet or contract, native and US-dollar stablecoin balances, and transaction count for each.

Before your agent pays or accepts funds: check up to 20 wallet addresses against the US Treasury OFAC sanctions list (SDN digital-currency addresses, EVM format, refreshed daily). Returns a match flag per address and the list date. Screening aid, not legal advice.

Turn a public web page into structured JSON for an agent: title, description, language, canonical URL, Open Graph and social tags, JSON-LD structured data, headings, link and image counts. Respects robots.txt.

Read a public web page as clean text for an AI agent: title, description, main text (scripts, styles and navigation removed) and links. Respects robots.txt.

What is this Base network address? Wallet or contract, bytecode size, upgradeable proxy and implementation, token standard (ERC-20, ERC-721, ERC-1155) with name and symbol, owner, nonce and balances.

Which public Base network RPC endpoints are healthy right now: each one's latest block, how far behind the freshest it is, and response time. Pick a fast, in-sync node before you send.

Perpetual futures data from a major on-chain derivatives exchange: hourly funding rate (and annualised), open interest, mark and oracle price, 24h volume, for one or all markets.

Historical US-dollar price of up to 10 crypto assets on a given date (or Unix time), by ticker or chain:address.

Are these domain names free to register? Checks up to 10 names against the public registries: registered (with expiry) or not found (likely available).

Registration facts for a domain from the public registry (RDAP): registrar, created, updated and expiry dates, status codes, nameservers and DNSSEC. Personal contact data is left out.

Detect the language of a text: ISO code, language name, script, and confidence.

Weather now and hour by hour for the next 1-48 hours at any latitude and longitude: temperature, wind, humidity, cloud, precipitation and conditions.

Exact finance maths: loan repayment and total interest, compound growth with regular contributions, NPV and IRR of cash flows, and ROI with annualised return.

Public holidays for a country and year, and optionally the number of business days between two dates (weekends and national holidays excluded).

ERC-20 token balance of any Base network wallet (the main US-dollar stablecoin by default): raw units, decimals, symbol and formatted amount.

Live balances of a Base wallet: native ETH and US-dollar stablecoin, plus its transaction count.

Crypto market Fear & Greed index: today's score (0-100) and classification, plus up to 30 days of history for trend.

Live US-dollar prices for up to 25 crypto assets in one call, by ticker (BTC, SOL…), feed id, or chain:address (e.g. base:0x…), with symbol, confidence and timestamp.

DNS and email-security check of a domain: A, AAAA, MX, NS, TXT and CAA records, plus SPF and DMARC presence and policy, with plain findings (e.g. 'no DMARC: mail can be spoofed').

DNS lookup for up to 10 domains in one call: A, AAAA, MX, NS, TXT, CNAME, CAA and SOA records as structured JSON.

Check an email address before sending: syntax, whether the domain exists and accepts mail (MX records), disposable or free-mail provider, role account (info@, support@), and a verdict.

Official daily foreign-exchange reference rates for about 30 currencies, in any base currency, with optional amount conversion.

Line-by-line difference between two texts (up to 3,000 lines each): added, removed and unchanged lines in order, with counts.

QR code for any text or link, as a ready-to-use SVG image (and a data URI), with error-correction level and size options.

Is this URL up? Live check: HTTP status, every redirect hop, response time, content type and size, server and security headers (HSTS, CSP).

Encyclopedia summary of a topic: title, one-line description, the lead paragraph as plain text, thumbnail and article link, in any language edition.

A Base network block (latest, or by number): hash, time, transaction count, gas used and limit, base fee and fee recipient.

Current Base network gas: base fee, suggested priority fee and max fee, and the cost in ETH of a plain transfer and of a typical token transfer.

Cheapest real end-to-end test of your pay-per-call (HTTP 402) client: pay US$0.001, get back proof of what was paid (payer, amount, network, timestamp) and the request you sent. Use it to check a wallet, a client library or a facilitator before buying something bigger.

Hash a text with SHA-256, SHA-384, SHA-512 or SHA-1: hex and base64 digests, for checksums, deduplication and content fingerprints.

Decode a JWT without verifying it: header (algorithm, key id), payload claims, and issued, not-before and expiry times with whether it is expired now.

Cryptographically secure random integers in a range you choose (unbiased), up to 1,000 per call.

Current time from a trusted server: UTC ISO timestamp, Unix seconds and milliseconds, and the time in an optional IANA time zone.

Fresh random identifiers from a secure generator: UUID v4 (up to 50) plus random hex bytes.