ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws x402 offerings

Email validation API. Checks whether a string is a syntactically valid email address using the same production-grade validation library trusted across the Node.js ecosystem, catching edge cases a qui…

Barista FIRE calculator. Simulates net worth growth through a full-time-saving phase and then a reduced-target phase funded partly by part-time/side income after quitting full-time work, until full f…

Scientific unit conversion for pressure, energy, and molarity using exact conversion factors.

Periodic table element lookup by symbol or atomic number, returning name, atomic mass, and category. Covers the most commonly referenced elements.

Line-based diff between two strings using the Myers diff algorithm (via the diff/jsdiff library), returning a list of equal/add/remove operations.

Sunrise, sunset, solar noon, day length, and moon phase for a given latitude/longitude/date, computed via the suncalc library (standard solar/lunar position algorithms) — precise astronomical math an…

Base64 decoder API. Decodes a base64 string back to UTF-8 text instantly and correctly, avoiding the padding and charset errors LLMs make when decoding base64 by hand.

Base64 encoder API. Encodes UTF-8 text to base64 instantly and correctly — skip burning agent tokens hand-computing base64, which LLMs frequently get wrong on padding and edge cases.

Arbitrary-precision integer arithmetic (add, subtract, multiply, power) beyond IEEE-754 float precision, using native BigInt. Operands are passed as digit strings so precision is never lost in transi…

Cap rate calculator for real estate investing. Runs a full multi-year deal analysis (per-category rent/expense growth, a sale scenario, IRR) and headlines the capitalization rate: first-year NOI divi…

Coast FIRE calculator. Computes the lump sum needed today, invested with zero further contributions, to grow into your full retirement number by your target retirement age, plus (given an ongoing mon…

Converts a color between hex, rgb, and hsl representations using exact arithmetic.

Computes the next N run times for a standard 5-field cron expression, avoiding the mental cron-schedule simulation an LLM often gets subtly wrong.

Emergency fund calculator. Multiplies monthly essential expenses by a chosen runway length (in months) to compute a target emergency savings amount.

Safe arithmetic expression evaluator. Parses and evaluates expressions with +, -, *, /, ^, and parentheses using a bounded-recursion parser (no eval/Function), avoiding the arithmetic slips an LLM ma…

Fat FIRE calculator. Same year-by-year compound-growth simulation as the standard FIRE calculator, framed for a higher, more lifestyle-preserving retirement spending target.

FIRE (Financial Independence, Retire Early) calculator. Projects year-by-year net worth growth to determine how many years until your portfolio can sustainably fund retirement spending at a given saf…

Checksummed-identifier-format generator API. Generates a structurally valid isbn, upc, vin, or imei, each computed with its real check-digit algorithm. vin and imei take no arguments. Accepts optiona…

Checksummed-financial-identifier generator API. Generates a structurally valid iban, bic, creditCardNumber, bitcoinAddress, litecoinAddress, ethereumAddress, or routingNumber, each computed with its …

Network-format generator API. Generates a valid ipv4/ipv6 address (optionally within a CIDR block or named network range) or a well-formed JWT string (via one of: ipv4, ipv6, jwt). Accepts optional l…

True-random-geo-coordinate generator API. Generates a bounded random latitude, longitude, or a coordinate near a given origin (via one of: latitude, longitude, nearbyGPSCoordinate). Accepts optional …

True-random-number generator API. Generates a bounded random number via one of: int, float, binary, octal, hex, bigInt (returned as a string), romanNumeral. Accepts optional locale (default en_US). N…

Secure password generator API. Generates a cryptographically random password — true randomness an LLM cannot produce on its own. Accepts optional length (8-128), per-character-class toggles (uppercas…

Slug generator API. Converts any text into a clean, URL-safe slug (lowercase, hyphen-separated, unicode-aware), handling punctuation and accented-character edge cases a naive regex misses.