Copilot usage metrics API now names custom skills, agents and MCP servers

GitHub says Copilot usage metrics now show the configured names of the skills, custom agents, Model Context Protocol (MCP) servers, slash commands and plugins that an organization creates, instead of grouping them under other or custom. It builds on the agentic CLI customization metrics released in September.

• Named entries: in enterprise and organization reports, the totals_by_skill, totals_by_custom_agent, totals_by_mcp, totals_by_slash_cmd and totals_by_plugin arrays show the name of each customer-defined item.
• More entries: each list holds up to 25 entries per record, up from five; remaining activity is combined into a trailing other entry. Interaction and distinct-use counts are calculated as before.
• Coverage: names come from Copilot CLI (interactive and prompt mode), the GitHub Copilot app, Agent Client Protocol integrations such as JetBrains, and the Copilot SDK. Prompt mode, the app and ACP integrations need Copilot CLI 1.0.97 or later; the SDK needs v1.0.21 or later. Names are not reported from an IDE's built-in chat telemetry.
• Caveats: names are trimmed to 128 characters, and names that look like file paths stay grouped under other or custom. GitHub notes the figures come from client telemetry and can undercount, so they suit trends rather than exact accounting. Names appear only for report days processed after the release.
• Access: enterprise owners, billing managers, organization owners and anyone with a role granting "View Copilot Metrics"; the Copilot usage metrics policy must be enabled.