Self-Check Skill

Source: playbook-source-package/skills/self-check/SKILL.md

Self-Check

A mandatory verification skill for worker agents. Ensures every agent checks their own work before marking a task as done.

Description

The Self-Check is the first layer of verification in the two-layer quality system. Every worker agent must run this checklist before marking any task as "done" — no exceptions, not even for "small changes."

Procedure

Generic checks (all roles)

[ ] The deliverable exists at the expected location
[ ] The deliverable is accessible (can be opened/loaded/viewed)
[ ] The deliverable matches what was requested in the task description
[ ] No placeholder content or TODO markers remain
[ ] I have not recreated something that already existed (check PROJECT-INVENTORY.md)

Role-specific checks

Customize per agent role. The check must be concrete and verifiable — not "code works" but "code runs without errors, all acceptance criteria met, no secrets committed."

Anti-patterns tracking

Maintain a living table of past mistakes:

Anti-Pattern	What Went Wrong	Check
[Added as issues arise]	[Description]	[What to verify]

A mistake that happens once is a bug. Twice is a process failure. Three times means the instructions are not clear enough — rewrite them.

Applicable Roles

All worker agents