open-skills vs SuperSkill Registry
open-skills is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑29.
open-skills is a plugin bundle for AI coding tools published by Alexandru Mares. No marketplace we read lists it any more. SuperSkill Registry is an MCP server published by onlyharness.com. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-29. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |  SuperSkill Registry | |
|---|---|---|
| Community marketplace allemaar/open-skills | Removed on 2026-10-29 Version: 1.8.0 Forks (GitHub): 1 Stars (GitHub): 15 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.3.1 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | open-skillsno longer listed · | SuperSkill Registry |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 1 |
| Stars (GitHub) (differs) | 15 | 0 |
| Forks (GitHub) (differs) | 1 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (superskill.sh/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 79 | Not a bundle |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/allemaar/open-skills | github.com/elvismusli/onlyharness |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-15 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 2 days ago |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of open-skills
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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For developers creating and maintaining skills for AI coding agents.
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A self-improving agent skill pipeline that prevents common AI coding agent failures. Includes 6 skills (plan-interview, intent-framed-agent, context-surfing, simplify-and-harden…
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Public Builder skills for docs-first discipline, autonomous execution, cross-agent review, local-first Rewind memory, efficient agent workflows, clear status recaps, Agent-Native…
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Toolbox for AI agent skills: scaffold, lint, pack, install, and serve SKILL.md skills
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skills-visibility
Publish a catalog of agent skills and make it discoverable and installable by AI coding agents — a .well-known discovery index, self-hosted archives with integrity digests, and…
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Focused skills for capable coding agents: design exploration, research, planning, implementation, multi-agent coordination, independent review, prose editing, memory, Git…
What each says it does
open-skills
Reusable skills for AI coding agents. Every skill has a readable SKILL.md; 40 of 70 also carry a declarative protocol.yon with named steps, rules, and gates validated structurally by @younndai/yon-parser. Validation does not enforce runtime obedience. Read before you trust.
SuperSkill Registry
Find, inspect and install reviewed reusable AI-agent capabilities from superskill.sh.
How to run each
open-skills
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
SuperSkill Registry As a remote MCP server
claude mcp add --transport http registry https://superskill.sh/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only SuperSkill Registry has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: open-skills · What it can do: SuperSkill Registry · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.