Convert acres to hectares: send a number, get the converted value with the exact factor (or formula for temperature), the unit category and a rounded human-readable form. Deterministic, no network call. $0.01 per conversion.

Convert US cups to millilitres: send a number, get the converted value with the exact factor (or formula for temperature), the unit category and a rounded human-readable form. Deterministic, no network call. $0.01 per conversion.

Convert litres per 100 km to miles per US gallon: send a number, get the converted value with the exact factor (or formula for temperature), the unit category and a rounded human-readable form. Deterministic, no network call. $0.01 per conversion.

Convert US short tons to kilograms: send a number, get the converted value with the exact factor (or formula for temperature), the unit category and a rounded human-readable form. Deterministic, no network call. $0.01 per conversion.

Cron preset "nightly 3am" (0 3 * * *): the next 10 run times in UTC from now (or from a start time you give), a plain-English description and the interval between runs. Grab the expression and its upcoming runs without writing cron syntax. $0.01 per call.

Go module github.com/gin-gonic/gin: latest version, description, license, repository and download/publish data from the go registry API. Pin, audit or compare github.com/gin-gonic/gin in one call, no token. $0.01 per call.

Go module github.com/pkg/errors: latest version, description, license, repository and download/publish data from the go registry API. Pin, audit or compare github.com/pkg/errors in one call, no token. $0.01 per call.

MIME type for .bin files: application/octet-stream. Returns the Content-Type to send, the category, whether browsers render it inline, whether it is compressible, common magic bytes and related extensions. Set headers and validate uploads for .bin correctly. $0.01 per call.

npm package puppeteer: latest version, description, license, homepage and repository, weekly downloads, dependency count, publish dates and dist-tags from the npm registry. Pin, audit or compare puppeteer in one call, no token. $0.01 per call.

npm package vite: latest version, description, license, homepage and repository, weekly downloads, dependency count, publish dates and dist-tags from the npm registry. Pin, audit or compare vite in one call, no token. $0.01 per call.

NuGet package iTextSharp: latest version, description, license, repository and download/publish data from the nuget registry API. Pin, audit or compare iTextSharp in one call, no token. $0.01 per call.

PyPI project aiohttp: latest version, summary, license, requires-python, homepage/repository, release date and available wheels from the PyPI JSON API. Pin, audit or compare aiohttp in one call, no token. $0.01 per call.

RFC 6454: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational…), page count, what obsoletes or updates it and what it obsoletes, keywords, abstract and links to the HTML/text versions, from rfc-editor.org. One RFC, one call, for protocol work. $0.01 per call.

RFC 791: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational…), page count, what obsoletes or updates it and what it obsoletes, keywords, abstract and links to the HTML/text versions, from rfc-editor.org. One RFC, one call, for protocol work. $0.01 per call.

RFC 8705: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational…), page count, what obsoletes or updates it and what it obsoletes, keywords, abstract and links to the HTML/text versions, from rfc-editor.org. One RFC, one call, for protocol work. $0.01 per call.

camel case: deterministic text transformation with no network call and nothing stored. Send the text, get the result plus input/output lengths. One operation per endpoint so agents can compose them safely. $0.01 per call.

Convert a date-time from America/Toronto to Asia/Seoul: send 'now' or a local date-time in America/Toronto, get the same instant in Asia/Seoul with both UTC offsets, whether daylight saving applies on each side, the hour difference and the ISO/UTC instant. Meeting scheduling without off-by-an-hour mistakes. $0.01 per call.

Convert a date-time from Europe/London to Europe/Madrid: send 'now' or a local date-time in Europe/London, get the same instant in Europe/Madrid with both UTC offsets, whether daylight saving applies on each side, the hour difference and the ISO/UTC instant. Meeting scheduling without off-by-an-hour mistakes. $0.01 per call.

Validate a isbn 10: tests the value against a well-known isbn 10 pattern and returns valid true/false, the pattern used (so you can reuse it), and, when it fails, the first character position that breaks the rule. Format validation without writing regexes. $0.01 per call.