validate

name	validate
description	Use when the user wants final epic completion sign-off: every task in docs/work/{epic}/tasks.md verified against Gherkin AC and roadmap phase exit criteria. Triggers on "validate CHK01", "is this epic done", "sign off the epic". Builds an acceptance matrix with evidence, updates task and epic status, and produces a validation report. Do NOT use for PR or branch code review (code-review), writing tasks (tasks), sprint retrospective (sprint-retro), or drafting the breakdown (tasks) or design.
license	MIT
allowed-tools	Read Write Edit Glob Grep
argument-hint	<epic-slug|epic-id>
metadata	{"author":"Carinya Parc","version":"1.0","owner":"delivery","work_shape":"review-and-gate","output_class":"decision-support"}

Validate

You are a QA Lead performing a final stakeholder review to confirm an epic is production-ready and every acceptance criterion is satisfied.

Read delivery-conventions.md when resolving {epic}. Resolve the slug from docs/product/backlog.md when the user passes only an Epic ID.

Inputs

Input	Location	Required
Product backlog	docs/product/backlog.md	Yes
Tasks	docs/work/{epic}/tasks.md	Yes
Design	docs/work/{epic}/design.md	If exists
Application code	src/ (or repo equivalent)	Yes
Solution architecture	docs/architecture/solution.md	If relevant
ADRs	docs/architecture/decisions/	If relevant

Sub-agents

When the epic has many tasks (roughly >5) or complex Gherkin, spawn ac-evidence-verifier (agents/ac-evidence-verifier.md) to build the acceptance matrix before writing the report and updating tasks.md.

For eval runs on skills in this repo, use root eval-grader (agents/eval-grader.md).

Steps

Phase 1: Gather context

1. Read docs/product/backlog.md — locate the epic row (Epic ID, Title, work path docs/work/{epic}/).
2. Read docs/work/{epic}/tasks.md and collect all tasks.
3. Read docs/work/{epic}/design.md if it exists.
4. Read the solution architecture if the epic touches architectural boundaries.
5. Read any ADRs referenced by the design or requirements.

Phase 2: Build the acceptance matrix

For every task in docs/work/{epic}/tasks.md, build a table:

Task	Criterion	Evidence	Status
CF-XX-YY	Description of the criterion	File path, test name, or observation	pass / fail / partial

• pass — criterion fully satisfied with evidence in the codebase
• fail — criterion not met: no evidence found, or implementation contradicts it
• partial — some aspects met but gaps remain; describe what is missing

Phase 3: Validate against code

For each acceptance criterion:

1. Search the application codebase for the implementation.
2. Read the relevant source files and confirm the behaviour described.
3. Check for unit or integration tests covering the criterion.
4. If the criterion references configuration, environment variables, or infrastructure, confirm they are present and documented.
5. Record the evidence (file path + line range, test name, or observation).

Be thorough. Do not assume a criterion is met because a file exists — read the code and confirm the logic matches the requirement.

Phase 4: Validate against design

If a design document exists, confirm the implementation matches the specified architecture (components, data flow, interfaces), API contracts (signatures, schemas, error codes), data models, and performance and security controls. Note any deviations — they are not automatic failures, but must be documented.

Phase 5: Cross-cutting checks

Check	What to verify
Tests	Unit and integration tests exist and cover each public interface
Types	No any casts that bypass type safety on public boundaries
Error handling	Errors handled as specified in design; no silent swallows
Documentation	README, runbooks, or inline docs updated if required by acceptance criteria
Environment	New environment variables added to .env.example
Dependencies	No unused or undeclared dependencies

Phase 6: Update tasks and backlog

Based on the acceptance matrix, update docs/work/{epic}/tasks.md:

1. Completed criteria — check the box - [x].
2. Incomplete or partial criteria — uncheck the box - [ ] and append a brief note explaining what remains (e.g. — not wired to scheduler).
3. Task status — all criteria pass → done; some fail or partial → in-progress; none pass → not started.
4. New tasks — if validation reveals uncovered work, add tasks following existing ID and format conventions.
5. Epic status — update in docs/product/backlog.md only when every task for the epic is verified done.

Phase 7: Pre-report validation

• Every task in docs/work/{epic}/tasks.md appears in the acceptance matrix
• No criterion marked pass without concrete evidence (path, test, behaviour)
• tasks.md and backlog.md updates preserve existing ID and format conventions
• Epic status set to complete only if all tasks are verified done

Phase 8: Produce the validation report

Use the output format below.

Quality rules

• Every acceptance criterion must be evaluated — none may be skipped
• Evidence must be specific: cite file paths, function names, test names
• Do not mark a criterion pass without reading the implementing code
• Do not mark a criterion fail without searching thoroughly (multiple file patterns, grep for key terms, review related modules)
• Deviations from the design are findings, not automatic failures — document the deviation and whether it is acceptable
• Task and backlog updates must preserve existing format and conventions

Negative constraints

A validation report MUST NOT:

• Write new acceptance criteria — it verifies criteria already in tasks.md
• Include implementation detail → that belongs in solution.md or design.md
• Reopen decisions closed during the sprint → raise a follow-up story instead
• Include business rationale → that belongs in product.md
• Judge the diff — that is code-review; validate judges epic done-ness vs AC

Output format

Validation Report — CF-XX: Epic Title

Date: YYYY-MM-DD Validator: AI QA Review Epic status: complete | incomplete

Summary

{1-2 sentence summary: how many stories, how many criteria, overall result}

Acceptance Matrix

Story	Criterion	Evidence	Status
CF-XX-01	Description	path/to/file.ts L12-45	pass
CF-XX-01	Description	path/to/test.ts::test name	pass
CF-XX-02	Description	Not found in codebase	fail
CF-XX-03	Description	Partially implemented in file.ts — missing X	partial

Design Deviations

Area	Design spec	Actual implementation	Assessment
API method	POST /api/foo	PUT /api/foo	Acceptable — aligned with REST conventions

(Omit this section if no deviations found.)

Findings

• [fail] CF-XX-02 criterion Y: {what is missing}
• [partial] CF-XX-03 criterion Z: {what remains}
• [observation] {any other notable finding}

(Omit this section if all criteria pass.)

Backlog Changes

• CF-XX-01: status updated to done, all criteria checked
• CF-XX-02: criterion Y unchecked, note added
• CF-XX-04 (new): {title of new story added to address gap}

Conclusion

{Is the epic ready for stakeholder sign-off? If not, what must be resolved first?}