eval SKILL.md skillA
eval from illyism/dev-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add illyism/dev-skills/eval@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- illyism/dev-skills
- Path
code/eval/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Oct 15, 2026
- Size
- 13,109 bytes
- Repository stars
- 6
- License
- none declared
Build, run, or update minimal evaluation benchmarks for AI prompts, LLM calls, multi-model comparisons, and core functions. Use when creating new eval scripts, comparing models side-by-side, filtering specific candidate models, running benchmarks, or inspecting eval.md output artifacts.
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
# Eval System A clean, minimal benchmark system that runs production code against test cases and writes results to a co-located markdown artifact (`eval.md`). The `eval.md` is a **judgment surface**: it exists so a strong external model or a human can read the real outputs and judge quality, not so the eval can auto-declare a winner. --- ## Core Principles & Rules ### 1. Import Production Logic Directly - **ALWAYS** import and invoke the actual production function, prompt constants, and schemas from the feature file. - **NEVER** duplicate prompts, system messages, or JSON schemas inside `eval.ts`. - *Why:* Re-implementing prompts in the eval causes prompt drift. When production changes, a duplicated eval becomes a false benchmark testing obsolete behavior. ### 2. Benchmark Real Runs — Never Estimate - **ALWAYS** execute every candidate model to capture ground-truth latency, tokens, and cost. - **NEVER** estimate or hallucinate latency, token counts, or pricing in a report without running the models. - *Why:* Models cannot predict real streaming latency, throughput, or cost. Only direct execution records the truth. ### 3. "Passed" (✅) Means Schema Valid — NOT High Quality …
Read the whole file at its exact version.
How to install
mdr add illyism/dev-skills/eval@sha256:549aa626ee8fddd8The line at the top of this page pins the label v1.0.0, 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.
[](https://markdownregistry.com/a/art_huthd4gt73j55mue)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 15, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13109 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
illyism/dev-skills · 6 stars · license none declared · pushed 2026-10-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_huthd4gt73j55mue GET https://markdownregistry.com/api/v1/resolve?ref=illyism/dev-skills/eval GET https://markdownregistry.com/api/v1/blob/549aa626ee8fddd87a059fbd6cd72c2a574e37a69767df6f14e7180b523c414c
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 illyism/dev-skills
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