substack-mcp

MCP server for Substack — read posts, manage drafts, and upload images. Safe by design: cannot publish or delete.

→ conorbronsdon/substack-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 3 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

🔐

You'll be asked for 1 credential: SUBSTACK_SESSION_TOKEN

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configSUBSTACK_PUBLICATION_URL— "": "https://yourblog.substack.com",

🔐 secretSUBSTACK_SESSION_TOKEN— "": "your-session-token",

configSUBSTACK_USER_ID— "": "your-user-id"

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 6 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/conorbronsdon-substack-mcp-gjfx36)](https://m8ven.ai/mcp/conorbronsdon-substack-mcp-gjfx36)

commit: 52e7eff5c9c955472b58c79649c7d5dd7ded8701

code hash: 31c3d70b23b22c2b6d598d5f914954a2ec065eacd9c6f9eaa4d0819c42f56db7

verified: 6/15/2026, 1:46:48 PM

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