underhood SKILL.md skillA
underhood from harsh-aghara/underhood is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add harsh-aghara/underhood/underhood@git:20261101.85c75aePins git:20261101.85c75ae in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- harsh-aghara/underhood
- Path
skills/underhood/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261101.85c75ae, committed Nov 1, 2026
- Size
- 12,853 bytes
- Repository stars
- 8
- License
- MIT
Explains how code really works, with file:line evidence: architecture, the end-to-end execution path, where state lives, how it fails, and what a PR changes. Use when the user asks how a repo, module, or function works, wants a request or operation traced through code, is onboarding onto unfamiliar code, asks what a PR or diff really does, wants to understand concurrency or failure behavior, or types /underhood, even if they never say "architecture". Not for writing or fixing code, and not for…
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
# /underhood: how the code really works The reader wants the mechanism, not a tour. A good analysis lets them predict what the code does in a situation nobody documented. That takes concrete data structures, real call paths, and honest limits on what was and wasn't read. Report what the code does, including when it does the right thing. A clean result is a valid result. Work as a single turn. Don't stop to ask questions. If something is ambiguous, pick the most reasonable reading, state it in one line at the top, and continue. --- ## Resolve the target The target is whatever the user pointed at: a path, repo, function, PR number or URL, branch, or commit range. - **No target given:** use the working directory and say so as an assumption. - **PR, commit, branch, or "my changes":** this is Delta mode. Get the diff with `gh pr diff <n>` when `gh` is available, otherwise `git diff <base>...<head>` or `git show <sha>`. For "my changes" with no base, compare against the default branch, falling back to uncommitted changes. Read the PR description or commit messages too; they state the intent you will check the code against. …
Read the whole file at its exact version.
How to install
mdr add harsh-aghara/underhood/underhood@sha256:4f9e339462433d1fThe line at the top of this page pins the label git:20261101.85c75ae, 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_indpnfaxgtp2qwxo)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Nov 1, 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 (12853 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
harsh-aghara/underhood · 8 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_indpnfaxgtp2qwxo GET https://markdownregistry.com/api/v1/resolve?ref=harsh-aghara/underhood/underhood GET https://markdownregistry.com/api/v1/blob/4f9e339462433d1f10ed2e71c907f7ead0790f6e9bebcc6f89b757271e4cd303
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.
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