core-skills vs fabric-skills
core-skills is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑19.
core-skills is a plugin bundle for AI coding tools published by Dean Dumitru. No marketplace we read lists it any more. fabric-skills is a plugin bundle for AI coding tools published by microsoft. Marketplaces we read that list it: 1 (Copilot CLI: github/copilot-plugins). As of our marketplace pass on 2026-10-19. 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 |  fabric-skills | |
|---|---|---|
| Community marketplace deandum/claude-resources | Removed on 2026-10-19 Version: 3.0.0 Forks (GitHub): 1 Stars (GitHub): 4 Not marked · First seen |
Not listed |
| Copilot CLI: github/copilot-plugins | Not listed | Listed Version: 0.3.0 Forks (GitHub): 362 Stars (GitHub): 1 258 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 | core-skillsno longer listed · | fabric-skills |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 1 |
| Stars (GitHub) (differs) | 4 | 1 258 |
| Forks (GitHub) (differs) | 1 | 362 |
| Last release | Not published | Not published |
| Where it runs | Installs as a plugin bundle | Installs as a plugin bundle |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Hooks it runs (differs) | 2 | Not published |
| Parts of the bundle (differs) | 43 | 33 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/deandum/claude-resources | github.com/microsoft/skills-for-fabric |
| Changes in the last 7 days (differs) | 4 | 0 |
| First seen (differs) | 2026-10-15 | 2026-10-11 |
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 core-skills
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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Production-grade engineering skills covering every phase of software development: spec, plan, build, verify, review, and ship.
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Production-grade engineering skills covering every phase of software development: spec, plan, build, verify, review, and ship.
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37 advanced engineering skills: agent designer, agent workflow designer, RAG architect, database designer + schema designer + SQL assistant, migration architect, observability…
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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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60 Agent Skills spanning the agent lifecycle, building, diagnosis, SRE, security, review, QA, data, delivery, docs, and research.
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Complete CTO & Staff Engineer toolkit: 24 skills covering code review, architecture, DevOps, security, testing, and engineering management
What each says it does
core-skills
Language-agnostic process skills covering spec-driven orchestration, error handling, testing strategy, code review, API design, concurrency, observability, Docker, project structure, and code style
fabric-skills
Complete bundle: all Microsoft Skills for Fabric for developers and consumers.
How to run each
core-skills
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
fabric-skills
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Commands built only from what the marketplaces declare; the full set for every client is on each card.
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: core-skills · What it can do: fabric-skills · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/github/copilot-plugins/blob/HEAD/.github/plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.