why SKILL.md skillA
why from creedants/pstack-t3 is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add creedants/pstack-t3/why@git:20261014.216b9fbPins git:20261014.216b9fb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- creedants/pstack-t3
- Path
skills/why/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261014.216b9fb, committed Oct 14, 2026
- First version recorded
- Oct 3, 2026
- Size
- 10,207 bytes
- Repository stars
- 15
- 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 Read [the pstack-t3 runtime](../pstack-runtime/SKILL.md) before spawning workers, choosing models, scheduling, or isolating work. It maps those steps onto T3's orchestrator tools. 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. Each spawn below names a role. Resolve its seat per the [runtime's Roles section](../pstack-runtime/SKILL.md#roles) and spawn with `delegate_task`. Omit `target` for an `inherit` seat. If T3 rejects a target, fall back per the runtime and say which seat changed. Pass the seat the role this step names, per the Subagents section of the poteto-mode skill. [The runtime's Modes section](../pstack-runtime/SKILL.md#modes) sets the mode lines of every brief this skill writes and how its spawns run in light mode. Every spawn is `delegate_task` with `role: "research"` and a read-only brief that says "Do not edit files, commit, or push." **Do not lower the child's runtime mode to strip tools.** The MCP-backed investigators and the synthesizer's citation spot-checks need their MCP tools, so the brief carries the read-only constraint. …
Read the whole file at its exact version.
How to install
mdr add creedants/pstack-t3/why@sha256:db0c9706734d5339The line at the top of this page pins the label git:20261014.216b9fb, 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_kmjun25v56z4yvip)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Oct 3, 2026 and Oct 14, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261014.216b9fb latest | 2026-10-14 | 216b9fb | 10,207 B | A | view · diff |
| git:20261011.042ae70 | 2026-10-11 | 042ae70 | 10,115 B | A | view · diff |
| git:20261008.31a131d | 2026-10-08 | 31a131d | 11,668 B | A | view · diff |
| git:20261007.a59be7f | 2026-10-07 | a59be7f | 11,512 B | A | view · diff |
| git:20261003.a632f62 | 2026-10-03 | a632f62 | 11,437 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 (10207 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
creedants/pstack-t3 · 15 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kmjun25v56z4yvip GET https://markdownregistry.com/api/v1/resolve?ref=creedants/pstack-t3/why GET https://markdownregistry.com/api/v1/blob/db0c9706734d5339cbe30c56441d31f4c1e9cbc743ae20e68ca3497f2b9004dd
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 creedants/pstack-t3
Every file in creedants/pstack-t3