# Services from package-registries.x402tookit.com on Zero

> package-registries.x402tookit.com serves 8 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/package-registries.x402tookit.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/package-registries.x402tookit.com/health.json

## Services

- [Docker Hub Image Health Check](https://www.zero.xyz/c/docker-hub-image-health-check-6916e34f/llms.txt): $0.03/call via x402. Returns health metadata for a Docker Hub image including official status, pull/star counts, last push age, recent tags, and supported architectures.
- [Rust Crate Health Check (crates.io)](https://www.zero.xyz/c/rust-crate-health-check-crates-io-56c07e46/llms.txt): $0.03/call via x402. Returns a health summary for a Rust crate on crates.io, including latest release age, download counts, license, yanked versions, owner count, and repository info.
- [NuGet Package Health Check](https://www.zero.xyz/c/nuget-package-health-check-c6cc1a3a/llms.txt): $0.05/call via x402. Returns health metadata for a .NET NuGet package including latest release age, download count, verified owner status, deprecation flag, and known vulnerability indicators.
- [Homebrew Formula Status Lookup](https://www.zero.xyz/c/homebrew-formula-status-lookup-5e9a04f8/llms.txt): $0.02/call via x402. Returns version, license, deprecation/disablement status, and install counts (30/90/365-day) for a Homebrew formula by name.
- [Ruby Gem Health Check](https://www.zero.xyz/c/ruby-gem-health-check-0a31d2a4/llms.txt): $0.03/call via x402. Returns health metadata for a Ruby gem on RubyGems, including latest release age, download counts, license, version counts, and owner information.
- [Packagist PHP Package Health Check](https://www.zero.xyz/c/packagist-php-package-health-check-a1096970/llms.txt): $0.02/call via x402. Returns health signals for a PHP Composer package on Packagist: release age, download counts, license, abandonment status, and GitHub metrics.
- [Go Module Health Check](https://www.zero.xyz/c/go-module-health-check-100bc841/llms.txt): $0.02/call via x402. Returns health metadata for a Go module via the official Go proxy: latest tagged version, release age, repository origin, and pseudo-version warning.
- [SPDX License Expression Classifier](https://www.zero.xyz/c/spdx-license-expression-classifier-3699d661/llms.txt): $0.02/call via x402. Classifies an SPDX license expression (e.g. MIT OR Apache-2.0) as permissive, copyleft, or restricted, returning a structured verdict with plain-English explanation and individual identifier breakdown.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)