10 Tools

The standard library for AI agents

Every tool produces deterministic, verifiable results. No token prediction, no approximation — real computation backed by battle-tested libraries.

calculate

Deterministic math for AI agents.

Arithmetic, percentages, exponents, roots, trigonometry, logarithms, factorials. The answer is exact, every time.

Deterministic unit conversion for AI agents.

Hundreds of unit pairs with exact mathematical transforms. Length, mass, temperature, volume, speed, energy, data storage, and more.

Deterministic statistical computation for AI agents.

Exact results on real data. Mean, median, mode, standard deviation, variance, percentiles, and more.

Deterministic date and time arithmetic for AI agents.

Leap years, month boundaries, business days, age calculations. Your agent never gets a deadline or duration wrong.

Deterministic encoding, hashing, and JWT inspection for AI agents.

Base64, hex, URL-encoding, SHA-256, SHA-512, HMAC signatures, and JWT decoding with real algorithms.

Deterministic financial math with arbitrary-precision decimal arithmetic.

Loan payments, amortization, NPV, IRR, CAGR, margin vs markup. Decimal.js eliminates IEEE 754 rounding errors.

Deterministic regex evaluation for AI agents.

Test, match, extract, replace, and split with a real RE2 engine. Linear-time safe, every result computed.

Deterministic color math and accessibility checks for AI agents.

Precise conversions across 8 color spaces, WCAG 2.1 contrast checks, and perceptual color manipulation.

Deterministic geospatial calculations for AI agents.

Great-circle distance, bearing, midpoint, destination points, polygon areas. Haversine and Vincenty on WGS84.

Deterministic identifier validation for AI agents.

Luhn check digits, IBAN mod-97 checksums, UUID variant bits, RFC 5322 email rules. Real algorithms, not pattern matching.