claude-blog-assistant vs Substack MCP Server
claude-blog-assistant is a plugin bundle for AI coding tools published by johnericforte. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). Substack MCP Server is an MCP server published by marcomoauro. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-28. 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 |  claude-blog-assistant |  Substack MCP Server |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 1.0.0 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.3.2 Downloads/month (npm): 2 391 Downloads/week (npm): 91 Forks (GitHub): 18 Stars (GitHub): 92 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 | claude-blog-assistant | Substack MCP Server |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 1 (worse) | 92 (better) |
| Forks (GitHub) (differs) | 0 (worse) | 18 (better) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (substack-mcp) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 3, secrets among them: 1 |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/johnericforte/claude-skill-blog-assistant | github.com/marcomoauro/substack-mcp |
| Changes in the last 7 days | 0 | 0 |
| 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
claude-blog-assistant
Dual-mode blog publishing assistant. Ship new posts via 8-step lifecycle OR audit existing posts. Wraps AgriciDaniel/claude-blog.
Substack MCP Server
Manage Substack publishing, subscribers, analytics, reader feeds, comments, and images through MCP.
How to run each
claude-blog-assistant As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install claude-blog-assistant@claude-communitySubstack MCP Server As a local MCP server: npm package
claude mcp add --env "SUBSTACK_PUBLICATION_URL=<YOUR_SUBSTACK_PUBLICATION_URL>" --env "SUBSTACK_SESSION_TOKEN=<YOUR_SUBSTACK_SESSION_TOKEN>" --env "SUBSTACK_USER_ID=<YOUR_SUBSTACK_USER_ID>" --transport stdio substack-mcp -- npx -y substack-mcpRequires: SUBSTACK_PUBLICATION_URL, SUBSTACK_SESSION_TOKEN (secret), SUBSTACK_USER_ID
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
The marketplaces of claude-blog-assistant publish no settings it asks for, so we do not compare settings.
What it can do: claude-blog-assistant · What it can do: Substack MCP Server · Compare two other plugins
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.