Run the Poseidon planning agent on a GitHub issue locally, in the current session, on the session model. Fetches the LIVE upstream plan instructions from a8cteam51/poseidon-actions each run (always up to date), reads the issue, gathers site context via the local team51 MCP, and posts an architecture-level "### Poseidon plan" comment. Use when the user wants to plan an issue the Poseidon way or run poseidon plan locally. Examples - "/poseidon-plan 45", "/poseidon-plan a8cteam51/some-repo 45 site:212289766".
$npx -y skills add a8cteam51/claude-code-plugins --skill poseidon-planInstalls into the current project.
Run `npx skills use "https://github.com/a8cteam51/claude-code-plugins" --skill "a8cteam51/claude-code-plugins/poseidon-plan"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/a8cteam51/claude-code-plugins" that are relevant to the current task. Run `npx skills add "https://github.com/a8cteam51/claude-code-plugins"` and select the relevant skills, then follow their instructions.