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How to install Substack MCP Server in Codex
To install Substack MCP Server in Codex, run "codex mcp add substack-mcp-server -- npx -y substack-mcp" in your terminal, then type /mcp in Codex to check it.
Built from the published package · server updated 1 month ago
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Run the install command
In a terminal, run:
codex mcp add substack-mcp-server -- npx -y substack-mcp - 2
Check it
Inside Codex, type /mcp to see the server and its tools.
MCP servers run with your permissions. If Substack MCP Server needs an API key, add it under env in the config. Check its README.
Install Substack MCP Server in another app
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Questions
Does Substack MCP Server work in Codex?
Yes. Codex supports mcp servers in the codex cli and ide extension, and Substack MCP Server installs with the steps above.
Substack MCP Server does not show up in Codex. What now?
Restart Codex fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.
Is Substack MCP Server safe?
It scores 74 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.