pack-prerequisite-checker

name	pack-prerequisite-checker
description	Verify brief completeness, runtime posture, skill coverage, and evidence habits before starting a pack workflow.

pack-prerequisite-checker

Purpose

Block "half-ready" pack execution: confirm the user's brief, chosen pack/recipe, runtime understanding, and evidence workflow are sufficient to start planners and validators without rework loops.

Quick start

• identify target pack/recipe
• run checklist rows from references/prerequisite-matrix.md
• mark each row Ready / Needs input / Blocked
• only then authorize entry into execution-heavy skills

When to use

• immediately after recipe-fit-assessor + intent-to-3d-brief-writer
• before first scene planner for a pack workflow
• when user jumps mid-pack without status context

When not to use

• micro decisions inside a single skill (too narrow)
• runtime debugging (use blender-troubleshooting / bridge resolver)
• license compliance (use asset-license-checker)

Trigger phrases

• "are we ready to start"
• "pre-flight for the pack"
• "what's missing before we build"
• "check prerequisites"

Prerequisites / readiness

• intended pack/recipe named OR explicitly "exploratory"
• user OK receiving Blocked rows

Input schema

Required inputs

Input	Why it is required
Current brief summary	Validates completeness
Target pack/recipe	Selects matrix rows
Evidence expectation	Prevents false Verified claims

Optional inputs

Input	Use
Known runtime path intent	Gates MCP vs CLI appendix posture
Install target doc	Confirms user knows upstream steps

Output schema

Primary output

• row table: Area | Status | Owner action
• go / no-go summary
• next skill when go

Evidence / caveat output

Runtime status: Not Run | Attempted | Produced | Verified | Failed | Blocked / Not Run
Artifact status: Not Run | Not Produced | Produced | Verified | Failed
Evidence used: <brief text, doc paths>
Limitations: <unknowns>

Required laws

• ../../laws/evidence-before-done.md
• ../../laws/non-blender-user-language.md
• ../../laws/no-arbitrary-python-interface.md
• ../../laws/official-runtime-only.md

Official runtime boundary

Readiness gate only. State Path 1 / Path 2 / CLI appendix per docs/runtime-stack-strategy.md without claiming Connector works alone — Path 1 always implies Blender Lab MCP add-on inside Blender 5.1+.

Operating procedure

1. Load matrix references/prerequisite-matrix.md.
2. Apply references/blocked-start-playbook.md for any Blocked row.
3. Emit references/pack-readiness-template.md.
4. If go → next planner skill; if no-go → list minimum inputs.

Mode handling

Text-only mode

Mark runtime rows as Needs input unless user supplied path choice.

Runtime-ready mode

User-declared path must pair with official-runtime-readiness-checker handoff suggestion.

Blocked runtime mode

Still check non-runtime rows (brief, assets plan, evidence).

Validation checklist

• Matrix covered
• Each Blocked row has owner action
• Go/no-go explicit
• Next skill named if go

Pass / Warn / Fail rubric

Verdict	Criteria
Pass	All critical rows Ready
Warn	Non-critical gaps logged with acceptance
Fail	Critical row Blocked without mitigation

Cross-skill handoff

• Recipe selection → ../recipe-fit-assessor/SKILL.md
• Brief → ../intent-to-3d-brief-writer/SKILL.md
• Runtime detail → ../official-runtime-readiness-checker/SKILL.md
• Bridge conflicts → ../runtime-bridge-conflict-resolver/SKILL.md

References

• references/prerequisite-matrix.md
• references/blocked-start-playbook.md
• references/pack-readiness-template.md
• ../../packs/product-hero-v0/PACK.md