feat(fetchers): add PackageRegistryFetcher for PyPI, crates.io, npm#65
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feat(fetchers): add PackageRegistryFetcher for PyPI, crates.io, npm#65
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Closes #54 — Adds a single fetcher handling PyPI, crates.io, and npm URLs, returning structured package metadata via their JSON APIs. Returns version, license, description, dependencies, and download stats. Supports version-specific PyPI URLs and scoped npm packages (@scope/name). Format: "package_registry".
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What
Adds a
PackageRegistryFetcherhandling PyPI, crates.io, and npm package URLs with structured metadata via their JSON APIs.Closes #54
Why
Agents evaluating dependencies need quick access to version, license, and dependency info without parsing noisy registry HTML. Directly supports the AGENTS.md requirement to avoid non-permissive licenses.
How
pypi.org/project/{name}viapypi.org/pypi/{name}/jsoncrates.io/crates/{name}viacrates.io/api/v1/crates/{name}npmjs.com/package/{name}viaregistry.npmjs.org/{name}"package_registry"Risk
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