What
The usage/cost display now breaks down spending by agent, skill, and plugin, showing what percentage of usage each component consumed.
Details
- API responses now carry
attributionAgent,attributionSkill, andattributionPluginfields - Costs are accumulated per-request into
byAgent,bySkill, andbyPluginmaps - The cost view renders a "Skills, subagents, and plugins" section with percentage breakdown
- Actionable tips appear alongside high-cost items:
- Skills: "Heavy skills can be scoped down or run with a cheaper model via skill frontmatter."
- Plugins: "Review what this plugin contributes — its agents, skills, and MCP tools all count toward your limit."
- Shows "No attribution data yet · accumulates as you use Claude" when no data exists
Evidence
Attribution tracking (search for "attributionAgent", "attributionPlugin", "Skills, subagents, and plugins")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.