Indirect abilities are written lit/<name> (via mcp-adapter-execute-ability) in guides, descriptions and hints, direct tools lit-<name>; guides use the client-visible codes (write_failed, partial_write) and say exactly which tools return a revision_id. ToolNamingTest keeps guides and sources consistent with Ability::isDirect() and checks the overview's direct-tool list. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7