# Aide Shared Core > Use when defining shared engine boundaries, contracts, protocols, or reusable logic that must stay free of host-specific leakage. - Skill: `tomevault-io/aide-shared-core` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/aide-shared-core` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/aide-shared-core/raw - Safety review: PASS (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/aide-shared-core --- ## Scope - `shared/**` - shared contracts, protocols, and engine boundaries - cross-host logic that can be defended as genuinely reusable ## Trigger - when a prompt is about shared-core structure, interfaces, or cross-host abstractions - when host-specific details must be separated from shared behavior ## Do Not Use - Do not use this skill when editing `hosts/**` implementation lanes directly. - Do not use this skill when the work is only packaging, lab setup, or evaluation bookkeeping. --- > Source: [Julesc013/aide](https://github.com/Julesc013/aide) — distributed by [TomeVault](https://tomevault.io).