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Remove mcp-server-neon: upstream npm package is deprecated in favor of a hosted server #835

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@danbarr

@neondatabase/mcp-server-neon is deprecated on npm:

This package is deprecated. Use the remote MCP server at mcp.neon.tech instead.

Last publish was 0.6.5 on 2026-03-02, which is already the version npx/mcp-server-neon/spec.yaml pins, so there is nothing to bump to. Upstream's main is now a Next.js app at 1.0.0 for the hosted service and is never published under this npm name.

The practical consequence is that this server can never pass the build-containers Grype gate. Its abandoned tree exact-pins roughly 30 packages and produces 86 findings, including a critical in next (GHSA-9qr9-h5gf-34mp) and about 34 highs. Clearing that would take ~30 override entries against a package that will never be updated, several of them cross-major, which is not a defensible use of the mechanism from #669.

The remote server has already been added to toolhive-catalog, and there is an open PR there marking this one deprecated.

Proposed: remove npx/mcp-server-neon/ from dockyard. This does not delete the already-published container image, it just stops carrying the spec forward and stops the gate failing on a server nobody should be using.

Context: it was one of the 10 in #830, excluded there because it is not override-shaped.

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