duckdb-skills vs CleanChart
duckdb-skills is a plugin bundle for AI coding tools published by duckdb. Marketplaces we read that list it: 3 (Claude Code: claude-plugins-official, Community GitHub marketplaces, Claude Code: claude-plugins-community). CleanChart is an MCP server published by cleanchart.app. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-08. 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 |  duckdb-skills |  CleanChart |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 0.2.4 Forks (GitHub): 38 Stars (GitHub): 616 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Listed Version: 0.2.4 Forks (GitHub): 38 Stars (GitHub): 616 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.0 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 | duckdb-skills | CleanChart |
|---|---|---|
| Marketplaces that list it (differs) | 3 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 616 | No figure on GitHub |
| Forks (GitHub) (differs) | 38 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (www.cleanchart.app/api/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) | 9 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/duckdb/duckdb-skills | Not stated |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-11 | 2026-10-21 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 28 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
duckdb-skills
DuckDB-powered skills for Claude Code: read any data file, attach and query DuckDB databases, search DuckDB/DuckLake docs, search past session logs, and install/update DuckDB extensions.
CleanChart
Clean messy tabular data and render publication-ready PNG charts from your AI assistant.
How to run each
duckdb-skills As a Claude Code plugin
/plugin install duckdb-skills@claude-plugins-officialCleanChart As a remote MCP server
claude mcp add --transport http cleanchart https://www.cleanchart.app/api/mcp --header "Authorization: Bearer <YOUR_TOKEN>"Requires: Authorization header
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only CleanChart 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: duckdb-skills · What it can do: CleanChart · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. 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.