Skills Discovery Migrated to skills/list Paginated Method

MCP servers providing skills no longer need to expose a skill://index.json resource. The discovery protocol has changed to use a standard skills/list MCP method that supports cursor-based pagination.

Changes:

• Old: MCP server exposes skill://index.json resource with a JSON index of skills (URL-based)
• New: MCP server implements the skills/list method, returning pages of skills with uri fields and optional digest and nextCursor
• Pagination is handled automatically — Claude Code iterates until all pages are fetched or limits are reached
• Dropped entries are logged: "N skills/list entries skipped (malformed, missing, or oversized fields)"
• If a page fails mid-pagination, already-fetched entries are used and a warning is logged

If you operate an MCP server that provides skills, update it from the resource-based index to the skills/list method.