bb-doc-skills vs Language Tutor by Agent Rails
bb-doc-skills is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑15.
bb-doc-skills is a plugin bundle for AI coding tools published by B16B1RD. No marketplace we read lists it any more. Language Tutor by Agent Rails is an MCP server published by rails.so. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-22. 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 |  Language Tutor by Agent Rails | |
|---|---|---|
| Community marketplace b16b1rd/bb-doc-skills | Removed on 2026-10-15 Version: 0.2.0 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.0 No figure published 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 | bb-doc-skillsno longer listed · | Language Tutor by Agent Rails |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 1 |
| Stars (GitHub) (differs) | 0 | No figure on GitHub |
| Forks (GitHub) (differs) | 0 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (tutor.rails.so/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) | 5 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/b16b1rd/bb-doc-skills | Not stated |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-14 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 3 days ago, requires a key |
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 bb-doc-skills
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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仕事の日本語文書を読みやすくわかりやすく書く・直すためのスキル。AI臭さの除去を工程の一部として組み込む。
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Language learning environment for Claude Code. Get grammar corrections, idiom suggestions, and vocabulary breakdowns while you work — write in your target language for feedback…
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A UserPromptSubmit hook that helps non-native English speakers improve while using Claude Code. Three modes dispatch automatically based on what you type: (1) correct — if your…
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Korean language skills: grammar checker, AI text humanizer, style guide enforcer
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Fetch English writing practice prompts and score a written response. Bring your own API key.
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日本語文章の推敲・リライト支援。小説、ブログ、技術文書など、目的に合わせた文体や表現の改善を提案します。
What each says it does
bb-doc-skills
Five Japanese writing, review, and visual explanation skills for Claude Code.
Language Tutor by Agent Rails
Practice Spanish, French or Russian in short conversations, with corrections.
How to run each
bb-doc-skills
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Language Tutor by Agent Rails As a remote MCP server
claude mcp add --transport http tutor https://tutor.rails.so/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only Language Tutor by Agent Rails 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: bb-doc-skills · What it can do: Language Tutor by Agent Rails · 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.