How to install Server Slack in Codex
To install Server Slack in Codex, run "codex mcp add server-slack -- npx -y @fizzyhere/server-slack" in your terminal, then type /mcp in Codex to check it.
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Run the install command
In a terminal, run:
codex mcp add server-slack -- npx -y @fizzyhere/server-slack - 2
Check it
Inside Codex, type /mcp to see the server and its tools.
MCP servers run with your permissions. If Server Slack needs an API key, add it under env in the config. Check its README.
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Questions
Does Server Slack work in Codex?
Yes. Codex supports mcp servers in the codex cli and ide extension, and Server Slack installs with the steps above.
Server Slack 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 Server Slack safe?
It scores 25 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.