No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
by marcomoauro · MCP Server · ★ 71
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is substack-mcp safe to install? View the security audit →
Substack MCP Server A Model Context Protocol (MCP) Server for Substack enabling LLM clients to interact with Substack's API for automations like creating posts, managing drafts, and more. 🛠 Available Tools createdraftpost - Create a draft post Inputs: (string): Title of the post (string): Subtitle of the post (string): Body of the post. Plain text becomes one paragraph per line — Markdown is not interpreted, so arrives literally. A JSON string of a Substack document also works and is validated against the same schema publishes, so an unrecognised node name is an error rather than a silently mangled post. Returns: . Pass to to read the draft back. For anything structured — headings, lists, links, code, images, a paywall — use after creating the draft: the schema is published there, so the calling model can read the node vocabulary rather than guess at it. listsubscribers - List and filter your subscribers Exposes the same filtering the Subscribers dash
| Stars | 71 |
| Forks | 15 |
| Language | JavaScript |
| Category | MCP Server |
| License | MIT |
| Quality Score | 60.7152125152915/100 |
| Last Updated | 2026-09-03 |
| Created | 2025-05-08 |
| Platforms | claude-code, cli, mcp, node |
| Est. Tokens | ~20k |
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substack-mcp is A Model Context Protocol (MCP) Server for Substack enabling LLM clients to interact with Substack's API for automations like creating posts, managing drafts, and more.. It is categorized as a MCP Server with 71 GitHub stars.
substack-mcp is primarily written in JavaScript. It covers topics such as automation, claude, mcp.
You can find installation instructions and usage details in the substack-mcp GitHub repository at github.com/marcomoauro/substack-mcp. The project has 71 stars and 15 forks, indicating an active community.
substack-mcp is released under the MIT license, making it free to use and modify according to the license terms.
The top alternatives to substack-mcp on Agent Skills Hub include claude-emporium, easy-mcp, claude-prompts. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: