# Logics Spec Writer > Create lightweight functional specs inside this repo. Use when Codex should write a structured spec document in `logics/specs/*.md` derived from a backlog item or task, with clear scope, acceptance criteria, and validation/test plan. Use when this capability is needed. - Skill: `tomevault-io/logics-spec-writer` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/logics-spec-writer` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/logics-spec-writer/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Product & Planning - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/logics-spec-writer --- # Backlog/Task → Spec ## Create a spec doc ```bash python logics/skills/logics-spec-writer/scripts/logics_spec.py new --title "..." --from-version X.X.X ``` ## Fill it from inputs - Start from the backlog acceptance criteria and convert them into spec sections. - Keep it concise; put implementation details in tasks, not in specs. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/alexago83) — claim your Tome and manage your conversions.