eval-llm-judge SKILL.md skillA

eval-llm-judge from calibre-labs/reforge-ai-evals is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add calibre-labs/reforge-ai-evals/eval-llm-judge@git:20261102.9ec9f47

Pins git:20261102.9ec9f47 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
calibre-labs/reforge-ai-evals
Path
skills/eval-llm-judge/SKILL.md
Versions recorded
3
Latest version
git:20261102.9ec9f47, committed Nov 2, 2026
First version recorded
Oct 3, 2026
Size
13,989 bytes
Repository stars
94
License
MIT

Write LLM-as-judge evaluator prompts for AI products. Use this skill whenever you need to evaluate semantic properties of AI outputs that cannot be checked programmatically — output quality, tone, factual accuracy, edge case handling, reference alignment. Also use when auditing existing judge prompts for bias, vagueness, or compound criteria. Output is a judge prompt and a runner in the project's own scorer format (a Python runner when the project has none), saved where the project keeps its…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# LLM Judge Evaluator Skill

An LLM-as-judge evaluator uses a language model to score another model's output against a
defined criterion. It handles semantic properties that code-based checks cannot: is the ranking
defensible? Did the agent handle ambiguity gracefully? Does the output align with the reference?

The tradeoff: judges are slower, more expensive, and non-deterministic. They require calibration
against human labels before you can trust their scores. Use them only after code-based checks have
covered the structural requirements.

## When to use this skill

Write an LLM judge when the property requires reasoning that a human reviewer would apply:
- **Output correctness**: are the results correct and in a defensible order or format?
- **Edge case handling**: did the agent appropriately flag ambiguity or decline gracefully?
- **Reference alignment**: does the output agree with a gold-standard expected response?
- **Tone and framing**: is the hedging appropriate for a speculative or high-stakes claim?
- **Faithfulness**: does the output stay within what the cited sources actually say?

Do NOT write an LLM judge for:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add calibre-labs/reforge-ai-evals/eval-llm-judge@sha256:59a72cb012064927

The line at the top of this page pins the label git:20261102.9ec9f47, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ct6fl2qh6geqmmbq.svg)](https://markdownregistry.com/a/art_ct6fl2qh6geqmmbq)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Oct 3, 2026 and Nov 2, 2026, about one every 15 days.

versioncommittedcommitsizeaudit
git:20261102.9ec9f47 latest2026-11-02 9ec9f47 13,989 BA view · diff
git:20261016.c78dbc22026-10-16 c78dbc2 10,043 BA view · diff
git:20261003.9a39ab52026-10-03 9a39ab5 9,730 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (13989 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

calibre-labs/reforge-ai-evals · 94 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ct6fl2qh6geqmmbq
GET https://markdownregistry.com/api/v1/resolve?ref=calibre-labs/reforge-ai-evals/eval-llm-judge
GET https://markdownregistry.com/api/v1/blob/59a72cb012064927605f96b28dee2a8b5bb496d493c96749ffd0f2454ad1251a

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from calibre-labs/reforge-ai-evals

llms.txt llms.txt file
calibre-labs/reforge-ai-evals · llms.txt
git:20261028.6d7e49a · audit A · 94 stars
eval-code SKILL.md skill
calibre-labs/reforge-ai-evals · skills/eval-code/SKILL.md · Write deterministic, code-based evaluator functions for an AI product. Use this skill whenever you need to write…
git:20261102.9ec9f47 · audit A · 94 stars
eval-guide SKILL.md skill
calibre-labs/reforge-ai-evals · skills/eval-guide/SKILL.md · Entry point for eval work. Use when someone asks for help with evals in general, does not know where to start, asks…
git:20261019.1d63dc1 · audit A · 94 stars
eval-rubric SKILL.md skill
calibre-labs/reforge-ai-evals · skills/eval-rubric/SKILL.md · Write or update the eval rubric for an AI agent or AI feature: the pass/fail criteria that define good behavior, in…
git:20261003.9a39ab5 · audit A · 94 stars
llm-align SKILL.md skill
calibre-labs/reforge-ai-evals · skills/llm-align/SKILL.md · Analyze alignment between LLM judge scores and human labels in an eval dataset. Use this skill whenever someone wants…
git:20261016.c78dbc2 · audit A · 94 stars
ticket-to-eval SKILL.md skill
calibre-labs/reforge-ai-evals · skills/ticket-to-eval/SKILL.md · Strip PII from a customer support ticket or eval trace and convert it into eval dataset rows. Produces two outputs: a…
git:20261003.9a39ab5 · audit A · 94 stars
trace-codes SKILL.md skill
calibre-labs/reforge-ai-evals · skills/trace-codes/SKILL.md · Turn free-form notes from reading agent traces into trace codes: named, yes/no failure or quality patterns with…
git:20261019.b5e5462 · audit A · 94 stars
trace-review-app SKILL.md skill
calibre-labs/reforge-ai-evals · skills/trace-review-app/SKILL.md · Design and build a custom trace review app for one AI product: a single-page tool where the team reads traces, writes…
git:20261028.d1290e3 · audit A · 94 stars
uig SKILL.md skill
calibre-labs/reforge-ai-evals · skills/uig/SKILL.md · Build a User Input Grid (UIG) for an AI product or feature, evaluate existing eval datasets against it, and propose new…
git:20261003.9a39ab5 · audit A · 94 stars

Every file in calibre-labs/reforge-ai-evals

Browse by kind, by grade A, or by owner.