Grok marketplace scanner rejects single-plugin root sources ("./" / ".")

[p-clements]

Context

Grok Build’s marketplace scanner lives in xai-org/grok-build (xai_grok_plugin_marketplace). That repo disables issues and does not accept external PRs, so filing here like #123.

Bug

Local marketplace plugin entries whose source is the marketplace root are dropped silently:

"source": "./"
// or
"source": { "type": "local", "path": "." }

This is the standard Claude Code shape for single-plugin repositories (the whole repo is the plugin). Examples: DietrichGebert/ponytail (and many third-party Claude marketplaces).

Repro

grok plugin marketplace add DietrichGebert/ponytail
grok plugin list --available --json   # no entry for ponytail from this marketplace
grok plugin install ponytail
# Error: No marketplace plugin named "ponytail" in any registered marketplace.

With --debug-file, expect a WARN along the lines of invalid/empty source path (same class as #123’s missing source path).

Direct install still works:

grok plugin install DietrichGebert/ponytail --trust

Source

In MarketplaceRelativePath::parse (crates/.../xai-grok-plugin-marketplace/src/types.rs):

• "./" → strip ./ → empty → MarketplacePathError::Empty
• "." → CurrentComponent → rejected

So root-local plugins never enter the catalog.

Expected

1. Treat . / ./ / empty-after-strip as marketplace root when the directory is a valid plugin (skills/commands/hooks/plugin.json convention).
2. Or, if intentionally unsupported, surface a user-visible warning on marketplace add instead of an empty plugin list (today the WARN is debug-only; Marketplace scanner drops root-repo plugins ({"source":"github","repo":"..."}) with no path #123 already asked for this).

Related

• #123 — root remote github sources without path also dropped
• Ponytail Grok adapter PR (install docs + thin .grok-plugin/): feat: add Grok Build native skills adapter (revive #561) DietrichGebert/ponytail#661

Environment

• grok 0.2.117 (and earlier)
• macOS