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.
skills/why/SKILL.md
Source commit d5b20bce6f0602e3155960b5ea46e47fa0692ad2
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Instructions only
- Last checked
- Nov 6, 2026
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Repository context
- Repository stars (not skill ratings)
- 105
- Repository last updated
- Nov 6, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- codex Repository topic
- codex-plugin Repository topic
- developer-tools Repository topic
- engineering-workflows Repository topic
- pstack Repository topic
- data Derived category
- design Derived category
- devops Derived category
- docs Derived category
Files and excerpt
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Browse files
SKILL.mdcore · 18,968 bytesSKILL.mdcore · 18,968 bytesSKILL.mdcore · 18,968 bytesSKILL.mdcore · 18,968 bytesSKILL.mdcore · 18,968 bytesSKILL.mdcore · 18,968 bytesSKILL.mdcore · 18,968 bytesSKILL.mdcore · 18,968 bytesagents/openai.yamlasset · 259 bytesreferences/epistemics.mddoc · 7,165 bytesreferences/investigator-prompt.mddoc · 5,554 bytesreferences/source-playbook.mddoc · 1,363 bytesreferences/sources/code-archaeology.mddoc · 1,440 bytesreferences/sources/databricks.mddoc · 6,994 bytesreferences/sources/datadog.mddoc · 4,971 bytesreferences/sources/incident-postmortem.mddoc · 372 bytesreferences/sources/linear.mddoc · 2,996 bytesreferences/sources/notion.mddoc · 2,853 bytesreferences/sources/sentry.mddoc · 3,141 bytesreferences/sources/slack.mddoc · 1,336 bytesreferences/synthesizer-prompt.mddoc · 7,260 bytes
Read excerpt
# Why
Delegation and optional capabilities follow `../poteto-mode/references/codex-agent-runtime.md`.
Investigate the motivation and intent behind code. Why was it built this way? What edge cases were considered? What product, business, or operational constraints shaped the design? What alternatives were rejected, and why?
Use the owning skill roles with observable Codex profiles when available. Otherwise inherit the parent model and reasoning effort. Read-only investigators may use authorized connector reads. A missing capability follows the runtime contract fallback; do not infer alternate-model availability.
## How this skill works
Historical context spreads across seven evidence categories: source control history, issue or ticket tracking, long-form documents, real-time team chat, infrastructure observability, error or exception tracking, and product analytics warehouses. You cannot predict from the question alone which one holds the answer, so the skill enumerates available MCPs at run time, maps each to a category, queries all seven in parallel, then synthesizes with explicit confidence calibration. Null results from searched categories are first-class evidence about how the decision was made; report them alongside positive findings. The default is coverage, not minimalism.
## Operating Posture