[mwbrooks]

Summary

This pull request shows developers building this sample with a coding agent the exact command to install the Slack MCP and Skills Plugin for their agent, right in the README they get from slack create.

codex plugin marketplace add slackapi/slack-skills-plugin
codex plugin add slack@slack

The README now has a short "Claude Code, Codex, Cursor, and Other Coding Agents" section with one command for Claude Code, Codex, and Cursor, and the npx skills command for other agents. It's the same section that slack-samples/bolt-js-starter-agent#115 added, and the same heading in every sample, so links to its anchor work everywhere.

Testing

• Commands match the install steps on https://docs.slack.dev/ai/slack-skills-plugin/.
• The Claude Code and Codex commands are the ones verified end to end in the agent setup prompt. The Cursor /add-plugin slack command is from the docs and I have not run it myself.

Notes

• The plugin is tooling for the coding agent, not a dependency of the app, so it stays out of the app's dependencies.