Individual skill

why

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.

plugins/pstack/skills/why/SKILL.md

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Matches the observed repository HEAD: Yes
Scanner rules are current: No
Repository scan complete: No
Skill scan complete: No
Observed behavior: Not checked yet
Last checked: Nov 5, 2026

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Repository context

Repository stars (not skill ratings): 4,144
Repository last updated: Nov 7, 2026
License: MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

agent-skills Repository topic
agentic-ai Repository topic
anthropic Repository topic
claude Repository topic
claude-code Repository topic
claude-code-skills Repository topic
claude-skills Repository topic
code-review Repository topic
codex Repository topic
gemini-cli Repository topic
data Derived category
design Derived category
devops Derived category
docs Derived category

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

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SKILL.mdcore · 10,728 bytes
SKILL.mdcore · 10,728 bytes
SKILL.mdcore · 10,728 bytes
SKILL.mdcore · 10,728 bytes
references/epistemics.mddoc · 7,983 bytes
references/investigator-prompt.mddoc · 5,788 bytes
references/source-playbook.mddoc · 1,363 bytes
references/sources/code-archaeology.mddoc · 1,440 bytes
references/sources/databricks.mddoc · 6,994 bytes
references/sources/datadog.mddoc · 4,971 bytes
references/sources/incident-postmortem.mddoc · 372 bytes
references/sources/linear.mddoc · 2,996 bytes
references/sources/notion.mddoc · 2,853 bytes
references/sources/sentry.mddoc · 2,089 bytes
references/sources/slack.mddoc · 1,336 bytes
references/synthesizer-prompt.mddoc · 7,451 bytes

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# Why

On Codex, read the [platform mapping](../poteto-mode/references/codex-tools.md), including its per-skill notes, before following this skill.

On GitHub Copilot, read the [platform mapping](../poteto-mode/references/copilot-tools.md), including its per-skill notes, before following this skill.

On Muse, read the [platform mapping](../poteto-mode/references/muse-tools.md), including its per-skill notes, before following this skill.

On Antigravity, read the [platform mapping](../poteto-mode/references/agy-tools.md), including its per-skill notes, before following this skill.

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 line in `pstack-models.md` and a default in [Models](#models). Set `model` to that line's value, or to the default if the sheet or the line is missing. Leave `model` unset when the value is `auto` or `inherit-parent`. If the `Agent` tool rejects a slug, use the default and say so. If it rejects the default, use the closest valid slug of the same family from its error message. Pick each subagent's reasoning level for the job, per the Subagents section of the **poteto-mode** skill.