io.github.cap-js/mcp-server vs Dev error explainers
io.github.cap-js/mcp-server is an MCP server published by cap-js. Marketplaces we read that list it: 3 (Official MCP Registry, Claude Code: claude-plugins-official, Claude Code: claude-plugins-community). Dev error explainers is an MCP server published by mahdibrr. Marketplaces we read that list it: 2 (Official MCP Registry, Community GitHub marketplaces). As of our marketplace pass on 2026-10-14. 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 |  io.github.cap-js/mcp-server |  Dev error explainers |
|---|---|---|
| Official MCP Registry | Listed Version: 0.0.6 Downloads/month (npm): 224 828 Downloads/week (npm): 49 386 Forks (GitHub): 19 Stars (GitHub): 113 Not marked · First seen |
Listed Version: 0.2.1 Downloads/month (npm): 630 Downloads/week (npm): 245 Forks (GitHub): 1 Stars (GitHub): 0 Not marked · First seen |
| Claude Code: claude-plugins-official | Listed Version: 0.0.6 Forks (GitHub): 19 Stars (GitHub): 113 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Listed Version: 0.0.5 Forks (GitHub): 19 Stars (GitHub): 113 Not marked · First seen |
Not listed |
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 | io.github.cap-js/mcp-server | Dev error explainers |
|---|---|---|
| Marketplaces that list it (differs) | 3 (better) | 2 (worse) |
| Stars (GitHub) (differs) | 113 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 19 (better) | 1 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (@cap-js/mcp-server) | On your machine (dev-error-explainers) |
| Transport | stdio | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 1 | 2 |
| Licence (differs) | Apache-2.0 | MIT |
| Repository (differs) | github.com/cap-js/mcp-server | github.com/mahdibrr/dev-error-explainers |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen | 2026-10-11 | 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
io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
Dev error explainers
Offline, deterministic cause and fix for Node, npm, Next.js, CORS and Postgres URL errors.
How to run each
io.github.cap-js/mcp-server As a local MCP server: npm package
claude mcp add --transport stdio io-github-cap-js-mcp-server -- npx -y @cap-js/mcp-serverDev error explainers As a local MCP server: npm package
claude mcp add --transport stdio dev-error-explainers -- npx -y dev-error-explainers mcpCommands 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: io.github.cap-js/mcp-server · What it can do: Dev error explainers · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.