Agent skill · Testing & QA

agent-evaluation

Run one specified Test Agent on one specified Benchmark Case exactly once, privately score that execution, and return one protocol result.

Prism-Shadowgithub.com/Prism-ShadowGitHub ↗
claude-codeApache-2.0
Install
npx skills add Prism-Shadow/penguin-harness --skill agent-evaluation --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 2
SKILL.md size: 9 KB
Bundled scripts: none
Version: 5
Path: packages/skills/skills/agent-evaluation/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 473 · +264 this week
Language: TypeScript

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

# Agent Evaluation Handle one evaluation request from a `run_subagent` caller: run the specified Test Agent on one Benchmark Case once, score that execution privately, and return one protocol result. The top-level Benchmark Designer or Optimizer owns all Case and Run loops, concurrency, and follow-up handling. This worker handles no other Case or Run, launches no evaluator or subagent, modifies no Agent or Benchmark, and never writes `scoreboard.yaml`. Use the Penguin CLI only to launch the specified Test Agent; do not use it to create another phase, designer, optimizer, or evaluator. Operate silently. Call tools without progress messages. Across all streamed and final responses, the only worker-authored text must be the final plain protocol YAML. Emit no narration, headings, Markdown fences, summaries, private scoring details, or other text. ## Before you start Use this Skill only for a complete request from a `run_subagent` caller. If the request is incomplete or inconsistent, return `invalid_request` through the protocol instead of asking the user a question. ## Contract Require exactly one value for every field below: ```text protocol_version: 1 case_id: <case_id> run: <1_based

What's inside
Steps it walks through
  1. Before you start
  2. Contract
  3. Prepare
  4. Run and verify
  5. Score
  6. Return
Ships with 1 file
  • icon.svg
Commands it runs
export PENGUIN_HOME
penguin run \
More from penguin-harness
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About this skill
What does the agent-evaluation skill do?

Run one specified Test Agent on one specified Benchmark Case exactly once, privately score that execution, and return one protocol result.

How do I install it?

Run `npx skills add Prism-Shadow/penguin-harness --skill agent-evaluation --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From Prism-Shadow/penguin-harness, a repository with 473 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

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