Agent Data Tools: Utilities

Save a value (up to 8,000 characters of text or JSON) under a key in your own namespace, so an agent can remember facts, preferences or task state between runs. Overwrites an existing key; expires after 1 to 30 days (default 30). Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to persist what an agent learned for a later call to memory_get. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Changes only what you saved in your own memory namespace; each call is charged, so repeats are not free.

Read the value saved under a key in your namespace with /memory/set, with when it was saved and when it expires. A key that was never saved or has expired is a 404 and is not charged. Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to recall what an agent saved in an earlier run. Example: namespace=demo-agent-memory-7f3c9a21, key=user-preferences. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Describe a task in plain words and get the best-matching paid API calls for it from a catalog of 320 tools (web search and page reading, LLM chat, token prices and chain reads on 5 networks, sanctions and company checks, weather, finance and utilities): each pick with the exact call URL, required inputs, price, MCP tool name and whether it is in the free calls. Use when an agent needs to find which API to call before paying for one. Example: need=current gas price on Base. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Every common hash of one input in a single call: MD5, SHA-1, SHA-256, SHA-384, SHA-512, Keccak-256 (Ethereum), CRC-32, base64 SHA-256, and Subresource Integrity strings (sha256-, sha384-, sha512-) for <script integrity>. Hashes UTF-8 text, or 0x/hex bytes with hex=true. Cheaper than hashing one algorithm at a time. Use for checksums, cache keys, file integrity and comparing digests across systems. Example: text=hello world. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Everything about one JSON document in a single call: valid or not with the error's line and column, pretty-printed (optionally with sorted keys), minified with the bytes saved, an inferred JSON Schema, structure statistics (depth, objects, arrays, keys, value types) and the same data as YAML. Up to 200 KB. Cheaper than the separate JSON tools. Use to inspect API responses, clean model output or document a payload. Example: json={"name":"agent","tools":["weather","search"],"active":true,"limits":{"daily":100}}. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Every common encoding of one text in a single call: Base64 and Base64url, hex, URL component and full-URL encoding, HTML-escaped, ROT13, Unicode code points, UTF-8 byte count and Punycode for international domain names, plus automatic decoding when the input already looks like Base64, hex, URL or HTML encoding. Use to prepare data for headers, URLs and markup, or to work out what an encoded string says. Example: text=Café & <tags>. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

One call to analyse a text: length, reading time and readability grade, the top keywords and repeated phrases with their density, the emails, links, phone numbers, hashtags and mentions it contains, and a prompt-injection scan for text an agent is about to act on. Up to 20,000 characters, local processing. Cheaper than the four tools bought one by one. Use to review drafts, triage inbound messages or vet scraped content. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Generate unique IDs of every common kind in one call: UUID v4 (random), UUID v7 and ULID (time-ordered, sort by creation), NanoID (21 URL-safe characters) and random base62 and hex strings, up to 20 of each, from the platform's cryptographic random source; and decode the creation time hidden in a ULID or UUID v7. Use for database keys, request and trace IDs, file names or test data. Example: count=3. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Transform one string every common way at once: camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Title Case, Sentence case, upper and lower; a URL slug (accents removed); reversed; trimmed and whitespace-collapsed; and counts of characters, letters, digits, words and lines. Splits identifiers like userIDValue or XMLHttpRequest correctly. Use when naming fields, files and routes or cleaning user input. Example: text=Hello World, user profile ID 42. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Language detection for a text: the most likely language with its ISO 639-3 and 639-1 codes and English name, plus the next candidates with relative scores, using trigram statistics for 82 major languages (franc-min). Works best above about 20 characters; very short or mixed text returns und (undetermined). Local, no outside service. Use to route messages, pick a translation target or filter content by language. Example: text=Det här är en mening skriven på svenska om väder och resor.. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Parse a User-Agent string into browser and version, operating system and version, device type (desktop, mobile, tablet or bot) and, for crawlers, which bot it is: Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot, social previewers, SEO crawlers and HTTP libraries such as curl or python-requests. Local rules, no outside service. Use to read access logs, segment traffic or spot AI crawlers. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Find pages like a given URL: we read it, search on its title and topic words and return the top 1-20 similar pages (title, URL, snippet, date), leaving out the source site by default. Same filters and contents options as /search (page text, highlights, summaries). Results are for immediate use only (Brave API terms). Use to find competitors, related articles or alternatives to a page. Example: url=https://www.x402.org/. Price $0.01/call via x402 USDC or a card key (/credits); failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Keyword ideas for SEO and ads: the search phrases real users type for a seed keyword, from Google, Bing, YouTube, Amazon and DuckDuckGo autocomplete, deduplicated and ranked by how many engines suggest each, with question and buying-intent phrases listed apart. deep=true adds the Google long tail (seed + a-z, how, what, best, vs), up to 200 keywords. Use to plan content, find long-tail and question keywords, or name a product. No search volumes. Example: seed=crm software. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Find pay-per-call x402 APIs for a task across the whole Coinbase Bazaar: up to 20 listings with name, URL, method, price in USD, networks, 30-day payers and calls, and when each was last paid for, in the Bazaar's relevance order or sorted by use or price, with a price cap and an active-only filter. Our own listings are marked, never boosted. Use when an agent needs a paid tool it does not have yet. Example: q=email verification. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Check whether text is valid JSON. Returns valid true/false, the parsed value's type and size, and for invalid input the error message with line and column. Use before parsing an LLM's or an API's output. Example: text={"a":1}. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Format JSON with indentation (2 or 4 spaces, or tabs) and optionally sorted keys. Returns the formatted text. Use to make machine JSON readable or to normalise it for diffs. Example: text={"b":2,"a":1}. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Remove all unnecessary whitespace from JSON and report the size before and after. Use to shrink payloads or prompts. Example: text={ "a" : 1 }. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Fix JSON as LLMs often write it: removes ```json fences and surrounding prose, comments and trailing commas, converts single quotes, quotes bare keys, maps True/False/None, and closes unclosed brackets. Returns the repaired JSON and whether it now parses. Use when an LLM's JSON output fails to parse. Example: text=```json {name: 'Ada', tags: ['x',],} ```. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert a JSON array of objects to CSV with a header row built from all keys. Nested values are written as JSON. Use to export API results to a spreadsheet. Example: text=[{"name":"Ada","age":36},{"name":"Alan","age":41}]. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert CSV (comma, semicolon, tab or pipe; delimiter detected automatically; quoted fields supported) to a JSON array of objects using the first row as keys. Numbers stay as text unless numbers=true. Use to load spreadsheet exports into an agent. Example: text=name,age Ada,36. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Encode UTF-8 text as standard base64, and also return the URL-safe variant. Use for data URLs, headers and basic auth strings. Example: text=hello world. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Decode standard or URL-safe base64 to UTF-8 text. Missing padding is tolerated. Use to read encoded headers, tokens and data URLs. Example: text=aGVsbG8gd29ybGQ=. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Percent-encode text for use in a URL query value (encodeURIComponent) and as a full URL (encodeURI). Use when building query strings. Example: text=a b&c=d/é. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Decode percent-encoded text, treating + as a space when plus=true (form encoding). Use to read encoded links and form data. Example: text=a%20b%26c. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Split a URL into protocol, host, port, path, query parameters (as an object), hash and origin, and report whether the host is an IP address. Use to read query parameters or check a link's host. Example: url=https://example.com:8080/a/b?x=1&y=2#top. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

SHA256 hash of UTF-8 text (SHA-256 by default; SHA-1, SHA-384 or SHA-512 on request), returned as a digest in hex and base64. Use for checksums, cache keys and deduplication. Example: text=hello. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Compute an HMAC of a message with a key using SHA-256 (default), SHA-1, SHA-384 or SHA-512, in hex and base64. Use to check webhook signatures. The key is used only for this call and is not stored. Example: message=hello, key=secret. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Generate 1 to 100 random version-4 UUIDs from a cryptographic random source. Use for IDs, idempotency keys and test data. Example: count=3. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Turn any text into a URL-friendly slug: accents removed (é→e, ß→ss), lower case, non-alphanumerics replaced by a separator (- by default). Use for file names, URLs and IDs. Example: text=Crème Brûlée & Straße!. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert text or identifiers between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, Sentence case, UPPER and lower. Handles mixed input like 'userID_value'. Use when renaming fields or generating code identifiers. Example: text=user profile id, to=camel. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Count characters, words, sentences and paragraphs, estimate reading and speaking time, and compute the Flesch reading-ease score and grade level for English text. Use to check the length and readability of a draft. Example: text=The quick brown fox jumps over the lazy dog. It was not amused.. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Find all email addresses, URLs, phone-number-like strings, hashtags, @mentions and numbers in a text, each list de-duplicated. Use to pull contacts and links out of scraped pages or messages. Example: text=Mail [email protected] or see https://example.com #news @ada +46 70 123 45 67. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Line-by-line difference between two texts: each line marked as unchanged, removed or added, with counts. Use to see what changed between two versions of a document, config or prompt. Example: a=one two three, b=one 2 three four. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Run a JavaScript regular expression against a text and return every match with its index and capture groups (named groups included). Pattern up to 300 characters, text up to 5,000; patterns with nested quantifiers such as (a+)+ are refused as unsafe, uncharged. Use to check a pattern before using it in code. Example: pattern=(\d{4})-(\d{2}), text=2026-10 and 2027-01. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Next run times (in UTC) of a standard 5-field cron expression (minute hour day month weekday; ranges, lists, steps and names like MON or JAN supported). Use to check a schedule before deploying it. Example: expr=*/15 9-17 * * MON-FRI. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Time between two dates or timestamps: total days, weeks, hours, minutes and seconds, a years-months-days breakdown, and the number of weekdays (Monday-Friday) in between. Use for deadlines, ages and durations. Example: from=2026-01-01, to=2026-10-18. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Add (or subtract, with negative numbers) years, months, weeks, days, hours and minutes to a date, or add business days (skipping Saturdays and Sundays). Month ends are clamped (31 Jan + 1 month = 28/29 Feb). Use to compute due dates and expiries. Example: date=2026-01-31. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Weekday, ISO week number and week-year, day of the year, quarter, days in the month, leap year, Unix timestamp and whether it is a weekend, for any date. Use for calendar and reporting logic. Example: date=2026-10-18. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert a Unix timestamp (seconds or milliseconds, detected automatically) to ISO date and time, or an ISO date to a Unix timestamp. Without input, returns the current time in both forms. Use to read timestamps in logs and APIs. Example: value=1792281600. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert between units of length, mass, volume (incl. US cups and gallons), temperature (c, f, k), speed, area, data size (kB vs KiB), time, energy and pressure. Example units: km, mi, lb, kg, floz, ml, mph, kn, acre, gib, kwh, psi. Use when exact conversions matter. Example: value=10, from=km, to=mi. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Write a whole number (up to trillions, negatives allowed) out in English words, e.g. for cheques and invoices. Also returns the cheque form with 'and' cents when given a decimal amount. Use when amounts must be written out in full. Example: number=1234.5. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert a number (1-3999) to Roman numerals, or Roman numerals back to a number. Give either number or roman. Use for dates, outlines and puzzles. Example: number=2026. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Check an IBAN's format, its country-specific length and its mod-97 check digits, and return it formatted in groups of four. Use before saving bank details or paying out. Example: iban=SE45 5000 0000 0583 9825 7466. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Check an ISBN-10 or ISBN-13 check digit and convert valid ISBN-10s to ISBN-13. Hyphens and spaces are ignored. Use before cataloguing or ordering books. Example: isbn=0-306-40615-2. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Luhn check: whether a card number or other ID passes the Luhn (mod 10) algorithm used by card numbers, IMEI numbers and many IDs, and compute the check digit to append. Only the format is checked; nothing is looked up. Use to catch typos in card or ID numbers. Example: number=79927398713. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert a colour between hex, RGB and HSL, and give its relative luminance and whether black or white text reads better on it. Accepts #rgb, #rrggbb, rgb(r,g,b) and hsl(h,s%,l%). Use for theming and design checks. Example: color=#0f6cbd. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

WCAG 2 contrast ratio between a text colour and a background colour, with pass/fail for AA and AAA at normal and large text sizes. Use to check that a design is readable. Example: fg=#767676, bg=#ffffff. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Details of an IPv4 network in CIDR notation: network and broadcast address, first and last usable host, netmask, number of addresses, and whether a given IP falls inside. Use for firewall rules and allowlists. Example: cidr=192.168.1.0/24. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Classify an IPv4 or IPv6 address without any lookup: version, whether it is private, loopback, link-local, carrier-grade NAT or public, and its integer and reverse-DNS forms (IPv4). Use to triage IPs in logs or allowlists. Example: ip=10.1.2.3. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Semver compare of two semantic versions (1.2.3, pre-releases like 2.0.0-rc.1 handled by the SemVer rules): which is newer, plus the next major, minor and patch versions of the first. Use to decide whether an upgrade is a major change. Example: a=1.10.0, b=1.9.3. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

JWT decode without a key: the header and payload of a JSON Web Token (the signature is not verified), with issued-at, not-before and expiry as dates and whether it has expired. The token is not stored. Do not use the result to trust a token. Use to debug auth flows. Example: token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjMiLCJleHAiOjE3OTIyODE2MDB9.sig. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert Markdown (headings, paragraphs, bold, italic, strikethrough, links, images, inline and fenced code, lists and task lists, tables, quotes, rules) to HTML. Raw HTML in the input is escaped, so the output is safe to embed. Use to publish agent-written Markdown on a web page. Example: markdown=# Title Some **bold** text and a [link](https://example.com).. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Strip HTML to readable plain text: scripts and styles removed, block elements become line breaks, list items get bullets, entities decoded. Use to feed web content or emails to an LLM. Example: html=<h1>Hi</h1><p>A &amp; B</p><ul><li>one</li></ul>. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Name and plain-language meaning of an HTTP status code (1xx-5xx, including 402 Payment Required and 429 Too Many Requests), and whether to retry. Use when handling API errors. Example: code=429. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

MIME (content) type for a file name or extension, e.g. report.pdf → application/pdf, and whether browsers usually display it inline. Use when uploading or serving files. Example: file=report.xlsx. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Generate a QR code for a URL or any text (UTF-8, up to 1,000 characters) as a scalable SVG plus a ready-to-embed data URL, at error correction L, M (default), Q or H. Use to put a link, Wi-Fi string or payment request on a page, label or ticket. Example: text=https://agent-data-tools.revmesh2074.workers.dev. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Monthly payment of an amortised loan or mortgage from the amount, the annual interest rate and the term, plus the total paid, the total interest and the first months of the repayment schedule (principal, interest and balance). Fixed rate, monthly payments. Use to compare loan offers or plan a mortgage. Example: principal=300000, rate=4.5. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Compound interest on savings or an investment: starting amount, annual rate, years, compounding (yearly, quarterly, monthly or daily) and an optional contribution at the end of each month. Returns the future value, total contributed, interest earned and the balance after each year. Use for savings goals and investment what-ifs; rates are assumed constant. Example: principal=10000, rate=7, years=10. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Exact age from a date of birth in years, months and days, total days lived, the weekday of birth, and the date of and days until the next birthday, measured today (UTC) or on any date you give. Use for age checks, forms and anniversaries. Example: birthdate=1990-05-17. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Body mass index from weight and height in metric (kg, cm) or imperial (lb, in) units, its WHO adult category (underweight, normal weight, overweight, obesity class I-III) and the weight range that counts as normal for that height. For adults; a screening number, not a diagnosis. Use for health, fitness and nutrition apps. Example: weight=70, height=175. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Tip and total for a bill at a tip percentage, split between any number of people, optionally rounding each share up to the next whole amount. Use for receipts, expense apps and group payments. Example: bill=84.5. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Lorem ipsum placeholder text: 1-20 paragraphs of 1-10 sentences, starting with the classic "Lorem ipsum dolor sit amet". The same seed always gives the same text. Use to fill mock-ups, templates and test data. Example: paragraphs=1. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Translate text to international Morse code (letters separated by spaces, words by /) or Morse code back to text; the direction is detected automatically or set with mode. Letters, digits and common punctuation are supported; anything else is reported, not guessed. Use for puzzles, radio practice and fun messages. Example: text=SOS help. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Encode or decode text with a Caesar cipher: every letter A-Z shifted by 1-25 places (13, the default, is ROT13), case kept, digits and punctuation untouched. decode=true shifts back. Use for puzzles, spoiler hiding and teaching; it is not encryption. Example: text=Hello, World!. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

XML to JSON for any XML document: attributes become "@name" keys, text becomes "#text" (or the value itself when an element only holds text), and repeated child elements become arrays. DOCTYPEs and external entities are refused, so nothing outside the document is ever loaded. Up to 100,000 characters. Use to read XML feeds, SOAP responses and config files in an agent. Example: xml=<order id="7"><item sku="a1">Pen</item><item sku="b2">Ink</item></order>. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Infer a JSON Schema (draft 2020-12) from an example JSON value: types, nested object properties, required keys, array item shapes merged across all items, and string formats (date-time, date, email, uri, uuid). Use to document an API response or to validate later data against the same shape. Example: json={"id":1,"email":"[email protected]","tags":["a","b"],"created":"2026-10-23T08:00:00Z"}. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert a YAML document (config files, Kubernetes manifests, OpenAPI specs, front matter) into JSON, parsed by the yaml library with anchors and aliases resolved (alias expansion capped against billion-laughs documents) and duplicate keys refused. Up to 100 KB. Use before feeding YAML into a JSON-only tool or schema check; for the reverse use json_to_yaml. Invalid YAML is a 400 with the parser's message, uncharged. Example: yaml=name: agent ports: - 80 - 443 enabled: true. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert a JSON value into a YAML document (block style, no line folding), for config files, Kubernetes manifests, GitHub Actions or docs that humans edit. Up to 100 KB of JSON. Use when a tool or person wants YAML; for the reverse use yaml_to_json. Invalid JSON is a 400, uncharged. Example: json={"name":"agent","ports":[80,443],"enabled":true}. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Validate and format a phone number with the libphonenumber rules: whether it is valid and possible, the E.164 form, international and national formatting, country, calling code and line type (mobile, fixed-line, toll-free, VoIP…). Give +country code, or a national number and a two-letter country. Offline: nothing is sent and it does not say the line is in service. Use to clean contact lists or check a number before an SMS. Example: number=+1 650-253-0000. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Decode a 17-character vehicle identification number (VIN) with the US NHTSA vPIC database: make, manufacturer, model, model year, trim, body class, vehicle type, doors, drive, fuel and electrification, engine cylinders, displacement and horsepower, transmission, weight class and assembly plant, plus the check-digit test. Best for North American vehicles. Use for listings, insurance and fleet records. A malformed VIN is a 400, uncharged. Example: vin=1HGCM82633A004352. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Geolocate an IPv4 or IPv6 address to its city, region, country (code and name), continent and approximate latitude and longitude, with the address range the record covers, from DB-IP's City Lite data (CC BY 4.0, monthly; attribution in every answer). City level at best; private and reserved addresses are refused. Use to localise a visitor or caller, pick a region or enrich logs; for the network owner and registry record use ip_lookup. Example: ip=8.8.8.8. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Great-circle distance between two latitude/longitude points (haversine on the mean earth radius) in kilometres, miles and nautical miles, plus the initial compass bearing and the midpoint. Accurate to about 0.5% against the ellipsoid. Use for delivery radius, travel and proximity checks, or sorting places by distance; for coordinates of a place name use geocode first. Example: lat1=59.3293, lon1=18.0686, lat2=51.5072, lon2=-0.1276. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Check a BIC (SWIFT code) against the ISO 9362 structure: institution code, a real country code with its name, location code, branch code, whether it is the head office (XXX or 8 characters), a test BIC or a passive participant, and the 11-character form. Computed locally; it checks the format and country, not whether the bank exists. Use before an international transfer or to clean payment data; for account numbers use validate_iban. Example: bic=DEUTDEFF500. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Keyword density of a text or a web page: the most frequent words and two-word phrases (English stop words removed), each with its count and share of all words, plus total and unique word counts. Give text, or a URL whose readable text is used (HTML, up to 1 MB). Use for SEO copy checks, comparing a page against a target keyword, or summarising what a page is about; for readability use text_stats. Example: text=Agents pay per call. Agents pay with USDC. Pay per call tools for agents.. Price $0.04/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Count business (working) days between two dates, skipping weekends and the nationwide public holidays of over 100 countries (our statutory rules for US, UK, SE, DE, FR, NO, DK, FI; Nager.Date for the rest, e.g. JP, NZ, CA, AU, IN), and list the holidays skipped; or give add=N for the date N business days after (or before) a date. Use for delivery estimates, SLAs, payment terms and payroll dates. Example: from=2026-12-01. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Descriptive statistics for a list of numbers: count, sum, mean, median, mode, min, max, range, population and sample variance and standard deviation, quartiles with IQR, and the 90th, 95th and 99th percentiles (linear interpolation). Up to 10,000 numbers, comma or space separated. Use to summarise measurements, latencies, prices or scores without a spreadsheet. Example: values=12, 15, 15, 18, 21, 24, 30, 45. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Evaluate an arithmetic expression safely (parsed, never executed as code): + - * / % ^ and **, parentheses, factorial !, constants pi, e and tau, and functions sqrt, cbrt, abs, round, floor, ceil, exp, ln, log (base 10), log2, sin, cos, tan, asin, acos, atan (radians), min, max and pow. Up to 500 characters. Use when an agent needs exact arithmetic instead of guessing, for prices, unit maths or formulas. Example: expression=(1500 * 0.045 / 12) + sqrt(144) - 2^3. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Western (tropical) zodiac sign with its element, and the Chinese zodiac animal and element of a birth date. The Chinese year is counted from the Gregorian year, so dates in January and early February before Chinese New Year are flagged as possibly the previous animal. Use for profile enrichment, greeting cards, games or horoscope-style content. Example: date=1990-08-15. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Generate a barcode as an SVG image: Code 128 for any printable ASCII text (switching to the compact numeric set for runs of digits, with the mod-103 check symbol), or EAN-13 for 12 or 13 digits (the check digit is computed or verified). Set bar width and height and whether to print the text below. Returns the SVG and a data URL ready for an <img> tag. Use for shipping labels, product codes, tickets or inventory; for QR codes use qr. Example: text=AGENT-12345. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Build a colour palette from one hex colour: complementary, analogous, triadic, split-complementary and tetradic harmonies (hue rotations at the same saturation and lightness), plus six shades from light to dark, all as hex codes, with the base colour's HSL. Use for UI themes, charts, brand kits or slide decks; to check text readability on a colour use color_contrast. Example: color=#3366ff. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Convert CSV (comma, semicolon, tab or pipe, detected automatically; quoted fields supported) into a GitHub-flavoured Markdown table, with number columns right-aligned, pipes escaped and line breaks kept as <br>. Up to 100 KB. Use to show spreadsheet data in a README, chat reply, issue or report; for JSON use csv_to_json. Example: csv=tool,price,calls weather,0.01,120 search,0.01,45. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Extract every table from an HTML fragment into JSON: header cells become keys and each body row an object (or raw arrays when there is no header row), with captions, colspans repeated and entities decoded. Give the HTML itself (up to 500 KB). Use to turn web or email tables into data an agent can sort and compute on; to fetch a page first use extract. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

List up to 100 keys saved in your namespace, optionally only those starting with a prefix, with their size, save time and expiry; pass the returned cursor for the next page. Values are not included (read them with /memory/get). Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to see what an agent has saved. Example: namespace=demo-agent-memory-7f3c9a21. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Delete the value saved under a key in your namespace now, before it expires. Answers deleted: false when there was nothing to delete. Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to forget a fact or clear task state. Example: namespace=demo-agent-memory-7f3c9a21, key=user-preferences. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Changes only what you saved in your own memory namespace; each call is charged, so repeats are not free.

Current air quality at a point: European and US air-quality index, PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide and carbon monoxide (Open-Meteo, CAMS model data). Use for health, outdoor-activity and travel decisions. Example: lat=59.33, lon=18.07. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Current UV index and today's maximum at a point, with the WHO exposure category and sun-protection advice (Open-Meteo). Use for outdoor planning and health reminders. Example: lat=59.33, lon=18.07. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Ground elevation in metres above sea level for a latitude and longitude (Copernicus 90 m digital elevation model via Open-Meteo). Use to plan routes, size flood or terrain risk, or enrich location data. Example: lat=59.33, lon=18.07. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Current price of up to 25 cryptocurrencies by CoinGecko id (bitcoin, ethereum, solana, usd-coin…) in up to 5 currencies, with the 24-hour change (from Coinbase for the coins it trades; tickers such as BTC work too). Use to price coins that are not on-chain tokens, value a portfolio in several currencies, or check a move. Example: ids=bitcoin,ethereum. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Current top stories on Hacker News: title, link, points, comment count, author, age and discussion URL (official HN API). Use to follow what developers are discussing right now. Example: count=5. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Current position of the International Space Station: latitude, longitude, altitude, speed and whether it is in daylight (wheretheiss.at). Use for space apps, education bots and sky-watching alerts. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Compare the API prices of about 450 LLMs from OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, Qwen and others: USD per million input and output tokens, context length, max output, modalities, and the cost of your call when you give token counts. Filter by name, provider, price cap, context or image input; sort by input, output or blended price. Source: OpenRouter's public model list. Use to pick the cheapest model that fits a job. Example: q=llama. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Flip one or more fair coins using a cryptographic random source. Returns each result and the totals. Use for fair decisions and games. Example: count=1. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Roll dice in standard notation such as 2d6+3 or 1d20, up to 100 dice of up to 1000 sides, with a cryptographic random source. Returns every roll, the modifier and the total. Use for tabletop games and simulations. Example: roll=2d6+3. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

One or more random whole numbers in a range (inclusive), optionally all different, from a cryptographic random source. Use for draws, sampling and games. Example: min=1. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Pick one or more items at random (without repeats) from a comma- or line-separated list. Use for raffles, choosing who goes first, or breaking ties fairly. Example: items=Ada,Alan,Grace,Linus. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Shuffle a comma- or line-separated list into a random order (Fisher-Yates with a cryptographic random source). Use for draw orders, seating and playlists. Example: items=1,2,3,4,5. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Split a list of names into a given number of random, evenly sized teams. Use for games, workshops and classrooms. Example: items=Ada,Alan,Grace,Linus,Margaret,Tim. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Ask a yes-or-no question and get one of the 20 classic Magic 8-Ball answers, chosen at random. For fun only. Use for games and chat bots. Example: question=Will it ship today?. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Generate strong random passwords or passphrase-style strings: choose length and character sets, from a cryptographic random source. Generated on demand; nothing is stored or logged. Use when creating accounts or secrets. Example: length=20. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

One or more random colours in hex, RGB and HSL, optionally limited to pastel or dark tones. Use for placeholders, avatars and design ideas. Example: count=3. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

A fair random yes or no, with a cryptographic random source. For quick decisions when the options are equally good. Use to break ties. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

Returns the message you send, with its length and the server time. Use to test an x402 client, payment flow or agent tool wiring end to end. Example: message=hello. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

A paid round-trip check: returns pong and the server time. Use to test that an x402 wallet, client or MCP setup can pay and receive a result. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.