chatprd/cursor-plugin/check-prd-alignment

Check PRD alignment

Trigger

User wants to verify their implementation matches the product requirements and find opportunities to better achieve the PRD's goals.

Workflow

1. Identify what changed — run git diff against the base branch to see all modifications.
2. Find the relevant PRD:

• Ask the user which PRD to check against.
• Search ChatPRD documents using search_documents with keywords from the branch or commit messages.
• Also check the local prd/ directory for saved specs.

1. Fetch the full PRD using get_document.
2. Extract all requirements, acceptance criteria, and — critically — the user and business goals the PRD is trying to achieve.
3. For each requirement, assess:

• Covered: implemented and matching the spec
• Partial: started but incomplete or missing edge cases
• Missing: not addressed in the current changes
• Deviated: implemented differently than specified

1. Review the implementation through the lens of the PRD's stated goals. For each goal, identify Opportunity items — places where the UX or implementation could be improved to better achieve the goal. Examples:

• A flow that technically meets the spec but adds unnecessary friction
• An edge case where a better error message or fallback would improve the experience
• A place where the implementation could be more delightful or intuitive than what was specced
• A data model or API design choice that would better support the stated business goal

1. Produce a coverage report with:

• Requirement-by-requirement status
• Specific code references for covered items
• Actionable notes for gaps and deviations
• Opportunity items tied back to specific PRD goals

Guardrails

• Be specific — cite file paths and line ranges, not vague summaries.
• Distinguish between intentional trade-offs and accidental omissions.
• Don't flag requirements that are explicitly marked as out-of-scope or future work in the PRD.
• Keep Opportunity items grounded and actionable — tie each one to a specific PRD goal and explain the concrete improvement.

Output

• Alignment report (covered / partial / missing / deviated)
• Opportunity items with goal references and suggested improvements
• Specific gaps with suggested next steps
• Summary of overall coverage