FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr vs Polyblog Multilingual Blog
FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr is an MCP server published by adelaidasofia. Marketplaces we read that list it: 1 (Official MCP Registry). Polyblog Multilingual Blog is an MCP server published by polyblog.io. 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 |  FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr | |
|---|---|---|
| Official MCP Registry | Listed Version: 0.1.0 Forks (GitHub): 1 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 0.1.1 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 | FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr | Polyblog Multilingual Blog |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 0 | No figure on GitHub |
| Forks (GitHub) (differs) | 1 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (https://github.com/adelaidasofia/substack-mcp/releases/download/v0.1.0/substack-mcp.mcpb) | Remote server (mcp.polyblog.io/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | Not published |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/adelaidasofia/substack-mcp | Not stated |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 6 days ago, requires a key |
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
FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr
FastMCP server for Substack — publish Notes and posts, pull analytics, manage drafts, pluggable…
Polyblog Multilingual Blog
Write, translate and publish blog articles, plan topic ideas and check each blog's languages.
How to run each
FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Requires: SUBSTACK_SID_COOKIE (secret)
Polyblog Multilingual Blog As a remote MCP server
claude mcp add --transport http polyblog https://mcp.polyblog.io/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only Polyblog Multilingual Blog 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
The marketplaces of Polyblog Multilingual Blog publish no settings it asks for, so we do not compare settings.
What it can do: FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr · What it can do: Polyblog Multilingual Blog · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. 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.