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eval-harness-first

Build the evaluation harness that gates every fine-tuning run - golden sets, per-failure-mode graders, judge calibration, and base-model baselines. Use when starting a fine-tuning effort, when converting traces into an eval set, or when…

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What it does and how to use it

A skill that teaches Claude Code to do general tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/wshobson-agents__eval-harness-first && curl -fsSL https://doutorai.pt/data/lib/skills__wshobson-agents__eval-harness-first.md -o .claude/skills/wshobson-agents__eval-harness-first/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

---
name: eval-harness-first
description: Build the evaluation harness that gates every fine-tuning run - golden sets, per-failure-mode graders, judge calibration, and base-model baselines. Use when starting a fine-tuning effort, when converting traces into an eval set, or when calibrating a judge against human labels.
---

# Eval Harness First

The Phase 0 gate for the whole plugin:
`finetuning-method-selection` and every downstream
skill assume this harness exists before a training
config gets written. The harness is not a run-end
side artifact - it is the data-curation engine. The
same labe

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