What problem does it solve? Claude Code does not expose session cost data to plugin skills, leaving users without a quick way to check usage costs from messaging channels or the CLI. This Skill provides a standardized cost summary command and transparently falls back to agent resource statistics when real cost data is unavailable. ## Core Features & Use Cases - OpenClaw-Compatible Output: Renders session, today, and last-30-day cost lines in the exact OpenClaw /usage format. - Subcommand Support: Offers /usage tokens, /usage full, and /usage cost variants for compact or verbose displays. - Resource Fallback Reporting: When cost data is unavailable, reports memory directory size, file and chunk counts, and dream event statistics via the agent_status MCP tool and shell commands. - Surface-Aware Formatting: Adapts bold markup for CLI, WhatsApp, and Telegram outputs. - Use Case: A user on WhatsApp asks "cuanto gasté" and receives an honest cost summary noting that native /cost is required for real token data, plus current memory and dream resource stats. ## Quick Start Ask the agent "show my usage cost summary" or invoke /usage to get the session, daily, and 30-day cost report.