ai-copywriter vs Substack MCP Server
ai-copywriter is a plugin bundle for AI coding tools published by Mickey Haslavsky. Marketplaces we read that list it: 1 (Community GitHub marketplaces). Substack MCP Server is an MCP server published by conorbronsdon. Marketplaces we read that list it: 3 (Official MCP Registry, npm registry (MCP servers), Community GitHub marketplaces). As of our marketplace pass on 2026-10-29. 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 |  Substack MCP Server | |
|---|---|---|
| Community marketplace mikiarlo3/ai-copywriter | Listed Version: 1.6.0 Forks (GitHub): 75 Stars (GitHub): 1 234 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.3.0 Downloads/month (npm): 1 535 Downloads/week (npm): 502 Forks (GitHub): 9 Stars (GitHub): 44 Not marked · First seen |
| npm registry (MCP servers) | Not listed | Listed Version: 1.3.0 Downloads/month (npm): 1 535 Downloads/week (npm): 502 Forks (GitHub): 9 Stars (GitHub): 44 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 | ai-copywriter | Substack MCP Server |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 3 (better) |
| Stars (GitHub) (differs) | 1 234 (better) | 44 (worse) |
| Forks (GitHub) (differs) | 75 (better) | 9 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (@conorbronsdon/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) | Not published | 2 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/mikiarlo3/ai-copywriter | github.com/conorbronsdon/substack-mcp |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-28 | 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
ai-copywriter
Reader-first copywriting that converts without sounding like a robot: clickbait titles, short descriptions, microcopy, subject lines, and viral LinkedIn posts, always starting from the feeling of the person on the other end and the simplest way to explain the concept. Backed by the humanizer's 33 AI-writing patterns from Wikipedia's "Signs of AI writing" guide.
Substack MCP Server
Substack drafts, Notes, analytics and consented subscribers. Long-form posts stay draft-only.
How to run each
ai-copywriter As a Claude Code plugin
/plugin marketplace add mikiarlo3/ai-copywriter
/plugin install ai-copywriter@ai-copywriterSubstack 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 @conorbronsdon/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 ai-copywriter publish no settings it asks for, so we do not compare settings.
What it can do: ai-copywriter · What it can do: Substack MCP Server · 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. Package data comes from the public npm registry (registry.npmjs.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.