ISBN validate x402 REST usage
Validate an ISBN-10 or ISBN-13 checksum (hyphens/spaces ignored) and report which format it is.
0.001 USDC per call
per call
Version
790 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Semver parse/compare x402 REST usage
Parse a semantic version, or compare two (a vs b → -1/0/1, with greater/lesser flags).
0.001 USDC per call
per call
npm-puppeteer x402 REST usage
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...
0.01 USDC per call
per call
nuget-itextsharp x402 REST usage
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.
0.01 USDC per call
per call
npm-vite x402 REST usage
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...
0.01 USDC per call
per call
Compare semantic versions x402 REST usage
Compare semantic versions. Compare two semantic versions (1.2.3, pre-releases like 2.0.0-rc.1 handled by the SemVer rules) and get which is newer, plus the next major, minor and patch versions of the first. Use to decide...
0.002 USDC per call
per call
Delx Semver Compare x402 REST usage
Compare two semantic versions for $0.001 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the suppl...
0.001 USDC per call
per call
Saylor Innovations Semver Range x402 REST
Semver range check - does a version satisfy ^, ~, x-range or || ranges
0.01 USDC per call
per call
Saylor Innovations Semver Resol x402 REST
Semver resolver - best satisfying version, latest stable and safe upgrade advice from a version list
0.01 USDC per call
per call
Saylor Innovations Semver List x402 REST
Semver list sorter - ascending or descending with invalid entries reported
0.01 USDC per call
per call
Saylor Innovations Semver Versi x402 REST
Semver bump - next major, minor or patch version
0.01 USDC per call
per call
go-github-com-gin-gonic-gin x402 REST
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 cal...
0.01 USDC per call
per call
npm-package-info x402 REST
npm package info: latest version and publish date, description, license, homepage, repository, dependency count, weekly downloads, maintainers and total versions, from the public npm registry. Dependency research for age...
0.01 USDC per call
per call
pypi-package-info x402 REST
PyPI package info: latest version and upload date, summary, license, homepage and project URLs, Python requirement, runtime dependencies count, number of releases and wheel availability, from PyPI's JSON API. $0.01 per p...
0.01 USDC per call
per call
cdnjs-library x402 REST
cdnjs library lookup: latest version, description, homepage, license, default file and its full CDN URL with SRI hash, GitHub repo, and the latest 15 versions. Instant script tags for front-end agents. $0.01 per library.
0.01 USDC per call
per call
semver-compare x402 REST
Semantic-version helper: compare two versions (-1/0/1 with which is newer), test whether a version satisfies a range (^, ~, >=, <, x-ranges, hyphen ranges, ||), or sort a comma/space list of versions descending with prer...
0.01 USDC per call
per call
github-latest-release x402 REST
Latest GitHub release of a repository: tag, name, published date, days ago, prerelease flag, author, first 600 chars of the release notes, and the downloadable assets (name, size, download count, URL). Falls back to the...
0.01 USDC per call
per call
site-has-version x402 REST
Does https://<domain>/version exist? Requests the path and returns the HTTP status, content type, size and the first 300 characters when it is text. Presence of version tells you about the site's tooling and policies. $0...
no price published
go-github-com-pkg-errors x402 REST
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.
0.01 USDC per call
per call
npm-react x402 REST
npm package react: latest version, description, license, homepage and repository, weekly downloads, dependency count, publish dates and dist-tags from the npm registry. Pin, audit or compare react in one call, no token....
no price published
npm-react-dom x402 REST
npm package react-dom: latest version, description, license, homepage and repository, weekly downloads, dependency count, publish dates and dist-tags from the npm registry. Pin, audit or compare react-dom in one call, no...
no price published
npm-next x402 REST
npm package next: latest version, description, license, homepage and repository, weekly downloads, dependency count, publish dates and dist-tags from the npm registry. Pin, audit or compare next in one call, no token. $0...
no price published
npm-vue x402 REST
npm package vue: latest version, description, license, homepage and repository, weekly downloads, dependency count, publish dates and dist-tags from the npm registry. Pin, audit or compare vue in one call, no token. $0.0...
no price published
npm-nuxt x402 REST
npm package nuxt: latest version, description, license, homepage and repository, weekly downloads, dependency count, publish dates and dist-tags from the npm registry. Pin, audit or compare nuxt in one call, no token. $0...
no price published