why SKILL.md skillA

why from arjitj2/open-pstack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add arjitj2/open-pstack/why@git:20261014.daa0fc5

Pins git:20261014.daa0fc5 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
arjitj2/open-pstack
Path
plugins/pstack/skills/why/SKILL.md
Versions recorded
6
Latest version
git:20261014.daa0fc5, committed Oct 14, 2026
First version recorded
Jun 26, 2026
Size
9,605 bytes
Repository stars
14
License
MIT

Use for 'why does X work this way', 'why we picked Y', design rationale, regressions, postmortems, or data-backed thresholds. Discovers available MCPs and queries each evidence category (source control, issue tracker, long-form docs, real-time chat, infrastructure observability, error tracking, product analytics warehouse) in parallel, then returns a cited read on decisions and tradeoffs. Use how for runtime behavior.

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

# Why

Investigate the motivation and intent behind code. The companion `how` skill answers what the code does and how it works. `why` answers what forces led to its shape.

**Dispatch contract.** Resolve every configured role through [`provider-dispatch.md`](../poteto-mode/references/provider-dispatch.md). Each lane below names a role line in the current harness's pstack model sheet and a default descriptor: use the line's value, or the default when the sheet or the line is missing. `auto` and `inherit-parent` run on the parent model natively. A descriptor that fails its route is a dropout, not a substitution. Investigators require the parent's live MCP surface, so the default and supported portable route is `inherit-parent` (or its `auto` alias); an MCP-less external lane is not an equivalent fallback, and a mechanically read-only mode strips MCP access — investigators still do not write files, which is a posture, not a tool restriction. Pass the code anchor by path. On Codex, resolve remaining Claude tool names via [`codex-tools.md`](../poteto-mode/references/codex-tools.md).

## Operating Posture
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add arjitj2/open-pstack/why@sha256:77e0476c24b2fb5f

The line at the top of this page pins the label git:20261014.daa0fc5, 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_qri2sii7ounwwerx.svg)](https://markdownregistry.com/a/art_qri2sii7ounwwerx)

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

Versions

The registry has recorded 6 versions of this file, between Jun 26, 2026 and Oct 14, 2026, about one every 22 days.

versioncommittedcommitsizeaudit
git:20261014.daa0fc5 latest2026-10-14 daa0fc5 9,605 BA view · diff
git:20260924.6cb17d82026-09-24 6cb17d8 10,758 BA view · diff
git:20260924.d4be5902026-09-24 d4be590 10,701 BA view · diff
git:20260908.64f174e2026-09-08 64f174e 10,275 BA view · diff
git:20260824.053ed782026-08-24 053ed78 21,536 BA view · diff
git:20260626.54d66172026-06-26 54d6617 21,618 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 (9605 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

arjitj2/open-pstack · 14 stars · license MIT · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qri2sii7ounwwerx
GET https://markdownregistry.com/api/v1/resolve?ref=arjitj2/open-pstack/why
GET https://markdownregistry.com/api/v1/blob/77e0476c24b2fb5f6eb3af20a620f3f51b4b08764b97cbb94331f3d8175847d8

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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