# Perigon Agent > Pointers for Copilot/agents to apply Perigon conventions Use when this capability is needed. - Skill: `tomevault-io/perigon-agent` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/perigon-agent` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/perigon-agent/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/perigon-agent --- ## When to use - Need project rules, locations, or docs before generating code. ## Usage - Start with .github/copilot-instructions.md (global rules: accuracy first, no builds unless asked, check diagnostics). - Backend map: definitions in src/Definition/{Entity,EntityFramework,Share,ServiceDefaults}; managers/DTOs in src/Modules/{Mod}/{Managers,Models}; controllers in src/Services/*/Controllers; host in src/AppHost. - Frontend map: Angular app in src/ClientApp/WebApp (routes app/app.routes.ts, services app/services, shared components app/share/components, i18n assets/i18n). - Key docs: Development-Conventions, Manager-Business-Logic, Controller-APIs, Database, Data-Access, Directory-Structure at https://dusi.dev/docs/Perigon/en-US/10.0/… - Behavior defaults: RESTful APIs; ManagerBase pattern; Code First EF; Guid v7 IDs; BusinessException/Problem for errors; select projections over heavy Include; avoid manager cross-calls; no ApiResponse wrappers. - When unclear: ask for entity/DTO details and target module/service; do not assume; avoid auto-running builds/migrations. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/aterdev) — claim your Tome and manage your conversions.