Prd Implementation Precheck

This hooks into Claude when you say "implement the PRD" and forces a preflight review before any code gets written. It reads your spec, checks for scope creep, missing edge cases (null handling, error states, concurrent edits), and whether your proposal conflicts with existing patterns in the codebase. The precheck report calls out blockers versus warnings, then explicitly asks if you want to proceed or revise. It's opinionated about stopping you from building the wrong thing, which is either going to save you hours of rework or feel like unnecessary friction depending on how well you write specs. The edge case checklist is thorough enough that you'll probably discover gaps you didn't think about.

skills.sh installs: 646
GitHub stars: 66
last updated: Jul 14, 2026

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Install

$ npx -y skills add charon-fan/agent-playbook --skill prd-implementation-precheck --agent claude-code

Installs into .claude/skills of the current project.

Files

PRD Implementation Precheck

Overview

Perform a short PRD precheck, surface material issues, then implement. Ask the user only when a missing choice would materially change behavior, architecture, data, or external side effects.

Workflow

Locate the PRD and any referenced files.
Precheck the PRD and summarize intent in 1-2 sentences.
List findings and questions with blockers first. If there are no material blockers, state assumptions and continue.
When a blocker exists, resolve it with the user before implementation.
Validate (tests or manual steps) or state what was not run.

Precheck Checklist

Basic Checks

Scope: Identify over-broad changes; suggest a smaller, targeted approach.
Alignment: Flag conflicts with existing patterns or architecture; propose alternatives.
Dependencies: Note missing hooks/providers/data sources or unclear ownership.
Behavior: Verify flows and edge cases are specified; ask for gaps.
Risks: Call out performance, regressions, or migration risks.
Testing: Check success criteria and test coverage; request specifics if vague.