payload402 x402 REST usage
English Wikipedia fact lookup: search by query or exact title, returns intro extract as plain text. For agents that need a grounded summary before deeper web search. Not a substitute for primary sources.
13 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.
English Wikipedia fact lookup: search by query or exact title, returns intro extract as plain text. For agents that need a grounded summary before deeper web search. Not a substitute for primary sources.
Vulnerability scan for a software package by ecosystem, name and version, or by package-URL (purl). Queries OSV.dev for known advisories, collects their CVE ids and enriches them with NVD CVSS, CISA KEV and EPSS, then re...
Verify a package: does it exist, is it deprecated or yanked, and does it have known vulnerabilities? Checked against the npm/PyPI/crates.io registry plus OSV.dev advisories.
Resolve a public GitHub release into the most plausible downloadable asset for a normalized OS/architecture target, excluding source/signature/checksum files and linking checksum companions when present. Returns ambiguit...
Use before spending tokens, money or crawler capacity fetching an unfamiliar web resource. Resolves redirects (manually, bounded, re-validated per hop) and returns deterministic HTTP/resource facts — final URL, status, c...
NPM package info API: package registry lookup for npm, PyPI and Cargo with latest version, age, license, deprecation, weekly downloads and OSV vulnerabilities. Dependency check before install.
Verify a GitHub repo: does it exist, is it archived or disabled? Catches an agent recommending or depending on a repo that's been renamed, taken down, or abandoned. Checked against the GitHub REST API.
NPM package info API: package registry lookup for npm, PyPI and Cargo with latest version, age, license, deprecation, weekly downloads and OSV vulnerabilities. Dependency check before install.
Semver range check - does a version satisfy ^, ~, x-range or || ranges
Semver resolver - best satisfying version, latest stable and safe upgrade advice from a version list
Semver list sorter - ascending or descending with invalid entries reported
Semver bump - next major, minor or patch version
Vulnerability scan for a software package by ecosystem, name and version, or by package-URL (purl). Queries OSV.dev for known advisories, collects their CVE ids and enriches them with NVD CVSS, CISA KEV and EPSS, then re...