second-opinion SKILL.md skillA
Removed from GitHub on 2026-11-09. The file no longer exists in its repository, and every version below is still saved here. mdr add no longer finds it by name, but a lockfile that pins one of these versions still installs it from its recorded commit, for as long as GitHub keeps that commit.
second-opinion from arcasilesgroup/ai-engineering is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add arcasilesgroup/ai-engineering/second-opinion@sha256:639e79e74ab0181bPins the contents saved here, the only way to install this file now it is gone from GitHub. What a pinned install does.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- arcasilesgroup/ai-engineering
- Path
skills/ai-verify/tiers/2-embedded/second-opinion/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260911.f7ea1cf, committed Sep 11, 2026
- First version recorded
- Sep 1, 2026
- Size
- 9,661 bytes
- Repository stars
- 65
- License
- Apache-2.0
Get an independent review of code you just wrote by spawning a fresh reviewer instance — a separate one-shot agent session with read-only tools that cannot see your reasoning. Use this immediately after finishing ANY implementation — a feature, a bugfix, a refactor, a migration, a schema change — before you tell the user the work is done. Also use whenever the user says "review this", "double-check that", "get a second opinion", "have another agent look at it", or asks whether an…
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
# Second opinion Spawn an independent reviewer — a fresh model instance that cannot see your reasoning — to review the implementation you just finished, triage what it finds, and fix the real bugs. ## Why this catches things you cannot catch yourself When you re-read code you just wrote, you check it against your intent. You remember what each line was *for*, so you read the intent into the code and skip right over the place where the code says something slightly different. That is not carelessness — it is unavoidable. You cannot un-know your own plan. A fresh reviewer has no plan to un-know. It sees only the task and the code, so a gap between them shows up as a gap. That is the entire mechanism, and it is also why the one thing that ruins this technique is leaking your reasoning into the review packet. ## The rule that makes or breaks it **Give the reviewer the spec and the code. Never give it your justifications.** Concretely, keep all of these out of the packet: - "I handled the empty case by …" — if the handling is real, the reviewer will see it in the code; if you have to point at it, that is exactly the claim worth testing …
Read the whole file at its exact version.
How to install
The line at the top of this page is already the fingerprint pin, because a file GitHub no longer serves cannot be found by its label. With it 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_kdyxkbv6keav72h6)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 1, 2026 and Sep 11, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260911.f7ea1cf latest | 2026-09-11 | f7ea1cf | 9,661 B | A | view · diff |
| git:20260901.88246a6 | 2026-09-01 | 88246a6 | 9,661 B | A | view · diff |
| git:20260901.dca22e5 | 2026-09-01 | dca22e5 | 9,380 B | A | view |
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 (9661 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
arcasilesgroup/ai-engineering · 65 stars · license Apache-2.0 · pushed 2026-11-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kdyxkbv6keav72h6 GET https://markdownregistry.com/api/v1/resolve?ref=arcasilesgroup/ai-engineering/second-opinion GET https://markdownregistry.com/api/v1/blob/639e79e74ab0181bcc3c0a75b6498dcdf2b9fc7cec2348537ef0b5fd0b9ca2b3
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.