core vs cpp-language-server
core is a plugin bundle for AI coding tools published by Grey Haven Studio. Marketplaces we read that list it: 1 (Community GitHub marketplaces). cpp-language-server 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 2026-10-20. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  cpp-language-server | |
|---|---|---|
| Community marketplace greyhaven-ai/claude-code-config | Listed Version: 2.1.0 Forks (GitHub): 5 Stars (GitHub): 30 Not marked · First seen |
Not listed |
| Copilot CLI: github/copilot-plugins | Not listed | Listed Version: 0.1.2 Forks (GitHub): 12 Stars (GitHub): 54 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 | cpp-language-server |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 30 (worse) | 54 (better) |
| Forks (GitHub) (differs) | 5 (worse) | 12 (better) |
| 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) | 3 | Not published |
| Parts of the bundle (differs) | 35 | 1 |
| Licence (differs) | MIT | See EULA/LICENSE.txt in @microsoft/cpp-language-server NPM package |
| Repository (differs) | github.com/greyhaven-ai/claude-code-config | github.com/microsoft/cpp-language-server |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-20 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
core
Core development tools including quality pipeline, TDD implementation, code review, and refactoring capabilities
cpp-language-server
Navigate and interact with your C++ code using the Microsoft C++ Language Server.
How to run each
core As a Claude Code plugin
/plugin marketplace add greyhaven-ai/claude-code-config
/plugin install core@grey-haven-pluginscpp-language-server
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 · What it can do: cpp-language-server · 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.