fx-mcp vs FIDE Laws of Chess
fx-mcp is a plugin bundle for AI coding tools published by fx. Marketplaces we read that list it: 1 (Community GitHub marketplaces). FIDE Laws of Chess is an MCP server published by arxo.io. Marketplaces we read that list it: 1 (Official MCP Registry). 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 |  fx-mcp |  FIDE Laws of Chess |
|---|---|---|
| Community marketplace fx/cc | Listed Version: 1.0.2 Forks (GitHub): 2 Stars (GitHub): 9 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.1 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 | fx-mcp | FIDE Laws of Chess |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 9 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 2 (better) | 0 (worse) |
| Last release (differs) | Not published | 2026-10-14 |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (mcp.arxo.io/mcp/fide-chess) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 1, secrets among them: 0 |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/fx/cc | github.com/arxohq/arxo-fide-chess |
| Changes in the last 7 days (differs) | 2 | 5 |
| First seen (differs) | 2026-10-19 | 2026-10-14 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 13 h ago |
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
fx-mcp
MCP (Model Context Protocol) server management guidance and best practices
FIDE Laws of Chess
FIDE Laws of Chess (2023) as an executable model: arbiter cases, answers with rules and judgments
How to run each
fx-mcp As a Claude Code plugin
/plugin marketplace add fx/cc
/plugin install fx-mcp@fx-ccFIDE Laws of Chess As a remote MCP server
claude mcp add --transport http fide-chess https://mcp.arxo.io/mcp/fide-chessCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only FIDE Laws of Chess has a remote endpoint we check. How we check endpoints
Tools each declares
Neither the marketplaces of fx-mcp nor its endpoint list any tools, so we do not compare tools.
Settings each asks for
The marketplaces of fx-mcp publish no settings it asks for, so we do not compare settings.
What it can do: fx-mcp · What it can do: FIDE Laws of Chess · 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.