FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr vs io.github.cyanheads/gutenberg-mcp-server
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). io.github.cyanheads/gutenberg-mcp-server is an MCP server published by cyanheads. Marketplaces we read that list it: 2 (Official MCP Registry, npm registry (MCP servers)). 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 |  FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr |  io.github.cyanheads/gutenberg-mcp-server |
|---|---|---|
| Official MCP Registry | Listed Version: 0.1.0 Forks (GitHub): 1 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 0.3.0 Downloads/month (npm): 1 296 Downloads/week (npm): 574 Forks (GitHub): 0 Stars (GitHub): 4 Not marked · First seen |
| npm registry (MCP servers) | Not listed | Listed Version: 0.3.0 Downloads/month (npm): 1 296 Downloads/week (npm): 574 Forks (GitHub): 0 Stars (GitHub): 4 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 | io.github.cyanheads/gutenberg-mcp-server |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 0 (worse) | 4 (better) |
| Forks (GitHub) (differs) | 1 (better) | 0 (worse) |
| Last release (differs) | Not published | 2026-10-29 |
| Where it runs (differs) | On your machine (https://github.com/adelaidasofia/substack-mcp/releases/download/v0.1.0/substack-mcp.mcpb) | Remote server or your machine |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | 6, secrets among them: 0 |
| Licence (differs) | Not stated | Apache-2.0 |
| Repository (differs) | github.com/adelaidasofia/substack-mcp | github.com/cyanheads/gutenberg-mcp-server |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 5 days 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
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…
io.github.cyanheads/gutenberg-mcp-server
MCP server for Project Gutenberg: 78,000+ public-domain ebooks with full plain-text retrieval.
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)
io.github.cyanheads/gutenberg-mcp-server As a remote MCP server
claude mcp add --transport http gutenberg-mcp-server https://gutenberg.caseyjhand.com/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only io.github.cyanheads/gutenberg-mcp-server has a remote endpoint we check. How we check endpoints
Tools each declares
Neither the marketplaces of FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr nor its endpoint list any tools, so we do not compare tools.
Settings each asks for
Only FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr asks for
SUBSTACK_SID_COOKIE (secret)
Only io.github.cyanheads/gutenberg-mcp-server asks for
MCP_AUTH_MODEMCP_HTTP_ENDPOINT_PATHMCP_HTTP_HOSTMCP_HTTP_PORTMCP_LOG_LEVELMCP_TRANSPORT_TYPE
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: FastMCP server for Substack — publish Notes and posts, pull analytics, manage dr · What it can do: io.github.cyanheads/gutenberg-mcp-server · 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. 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.