Eval Report Publishing / Claude Code v2.1.210

What

The claude plugin eval command can now export its results as a styled HTML report, optionally published as a private artifact on claude.ai.

Usage

claude plugin eval --report results.html          # write HTML to a local file
claude plugin eval --publish-report               # publish to claude.ai and print the link
claude plugin eval --json results.json            # existing flag, unchanged

Details

--report <path> writes a self-contained HTML file with per-case scores, prompts, grader verdicts, and summary statistics.
--publish-report uploads the HTML as a private artifact and prints the URL. Publishing is unavailable when claude.ai artifacts are turned off for the account or provider.
If the run is interrupted before all cases finish, the report is skipped rather than written with incomplete data.
--max-cost-usd ceiling is reported when it cuts the run short.

Evidence

New flag strings (search for "--publish-report" and "Write a self-contained HTML report (scores, prompts, grader verdicts) to <path>")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.