Substack Streamable MCP
Streamable HTTP MCP server for Substack designed for Vercel deployment. It exposes twenty-seven tools covering drafts, post body updates, publishing, subscribers, analytics, tags, comments, Notes, and reader feed operations, while keeping Substack publication URL, session cookie, and user ID in server-side environment variables. Public GitHub repository created September 10, 2026.
MCP unverified
Integration
| Transport | http |
| Auth | api-key |
| Endpoint | https://your-domain.vercel.app/mcp |
| Install | git clone https://github.com/pmcostadev/substack.git && cd substack && npm install |
Use Cases
| 01 | Create and update Substack draft posts from an MCP client before publication review |
| 02 | Inspect subscribers, analytics, comments, tags, Notes, and reader-feed state through one hosted endpoint |
| 03 | Deploy a Streamable HTTP Substack MCP server on Vercel with credentials stored server-side |
Tags
substack newsletter drafts publishing analytics comments notes vercel
Machine-readable: /api/servers.json
· JSON-LD schema embedded in <head>