MCP SDK Tier Audit

You are performing a comprehensive tier assessment for an MCP SDK repository against SEP-1730 (the SDK Tiering System). Your goal is to produce a definitive tier classification (Tier 1, 2, or 3) backed by evidence.

Step 0: Pre-flight Checks

Before doing anything else, verify GitHub CLI authentication:

gh auth status 2>&1

If this fails (exit code non-zero or shows "not logged in"), stop immediately and tell the user:

GitHub authentication is required for this skill. Please run gh auth login first, then re-run the skill.

Do NOT proceed to any other step if this check fails.

After parsing arguments (Step 1), also verify the conformance server is reachable: