How do I install the Repo Context skill?

Run npx skillmds@latest add itwin/repo-context in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Repo Context safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Repo Context?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Repo Context free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Repo Context?

itwin (@itwin) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Repo Context by itwin — Agent Skill

Name: Repo Context
Author: itwin

File contents

iTwin/presentation Repository Context

Overview

This is a pnpm monorepo orchestrated with Lage and versioned with Changesets.

Tech Stack

Area	Technology
Language	TypeScript (strict, ES2022, dual CJS/ESM builds)
UI	React 18, iTwinUI components, SCSS
Testing	Vitest
Linting	ESLint 9 (flat config), oxfmt for formatting
Platform	iTwin.js (iModels, ECSQL, Presentation APIs)
Reactive	RxJS
API docs	`@itwin/build-tools` (extract-api, docs)
Node	^24, pnpm 11

Packages

Package	Path	Purpose
`@itwin/presentation-shared`	`packages/shared`	Shared utilities and types
`@itwin/presentation-core-interop`	`packages/core-interop`	Interop layer with iTwin.js Core
`@itwin/presentation-hierarchies`	`packages/hierarchies`	Hierarchy building from iModels and other sources
`@itwin/presentation-hierarchies-react`	`packages/hierarchies-react`	React bindings for hierarchies
`@itwin/presentation-components`	`packages/components`	React components (lists, property grids, tables)
`@itwin/unified-selection`	`packages/unified-selection`	Unified selection storage
`@itwin/unified-selection-react`	`packages/unified-selection-react`	React bindings for unified selection
`@itwin/presentation-opentelemetry`	`packages/opentelemetry`	OpenTelemetry diagnostics integration
`@itwin/presentation-models-tree`	`packages/models-tree`	Models tree widget for internal testing
`@itwin/presentation-test-utilities`	`packages/test-utilities`	Internal test utilities

Apps

App	Path	Purpose
`full-stack-tests`	`apps/full-stack-tests`	Integration tests
`test-app`	`apps/test-app`	Sample app (frontend + backend)
`performance-tests`	`apps/performance-tests`	Benchmarks for hierarchies and unified selection

Key Conventions

Packages produce dual CJS/ESM output via tsconfig.cjs.json / tsconfig.esm.json
Public API is tracked via extract-api and .api.md report files in api/ folders

/*---------------------------------------------------------------------------------------------
 * Copyright (c) Bentley Systems, Incorporated. All rights reserved.
 * See LICENSE.md in the project root for license terms and full copyright notice.
 *--------------------------------------------------------------------------------------------*/

User-visible changes to released packages require a changeset (pnpm change); packages with "private": true do not require a changeset.
Build order is managed by Lage (lage build, dependencies via ^build)

Common Commands

Scope	Build	Test	Lint	Format
All (repo root)	`pnpm build:all`	`pnpm cover:all`	`pnpm lint:all`	`pnpm format`
Single package	`pnpm build`	`pnpm test`	`pnpm lint`	`pnpm -w exec oxfmt --check .`
Scoped build	`pnpm lage build --to <package>`	—	—	—
Format fix	`pnpm format:fix`	—	—	—

---name: repo-contextdescription: Provides tech stack, package layout, conventions, and build commands for the iTwin/presentation monorepo. Use when: working on any package or app in this repo, planning changes, implementing features, reviewing code.---# iTwin/presentation Repository Context## OverviewThis is a **pnpm monorepo** orchestrated with **Lage** and versioned with **Changesets**.## Tech Stack| Area | Technology ||------|-----------|| Language | TypeScript (strict, ES2022, dual CJS/ESM builds) || UI | React 18, iTwinUI components, SCSS || Testing | Vitest || Linting | ESLint 9 (flat config), oxfmt for formatting || Platform | iTwin.js (iModels, ECSQL, Presentation APIs) || Reactive | RxJS || API docs | `@itwin/build-tools` (extract-api, docs) || Node | ^24, pnpm 11 |## Packages| Package | Path | Purpose ||---------|------|---------|| `@itwin/presentation-shared` | `packages/shared` | Shared utilities and types || `@itwin/presentation-core-interop` | `packages/core-interop` | Interop layer with iTwin.js Core || `@itwin/presentation-hierarchies` | `packages/hierarchies` | Hierarchy building from iModels and other sources || `@itwin/presentation-hierarchies-react` | `packages/hierarchies-react` | React bindings for hierarchies || `@itwin/presentation-components` | `packages/components` | React components (lists, property grids, tables) || `@itwin/unified-selection` | `packages/unified-selection` | Unified selection storage || `@itwin/unified-selection-react` | `packages/unified-selection-react` | React bindings for unified selection || `@itwin/presentation-opentelemetry` | `packages/opentelemetry` | OpenTelemetry diagnostics integration || `@itwin/presentation-models-tree` | `packages/models-tree` | Models tree widget for internal testing || `@itwin/presentation-test-utilities` | `packages/test-utilities` | Internal test utilities |## Apps| App | Path | Purpose ||-----|------|---------|| `full-stack-tests` | `apps/full-stack-tests` | Integration tests || `test-app` | `apps/test-app` | Sample app (frontend + backend) || `performance-tests` | `apps/performance-tests` | Benchmarks for hierarchies and unified selection |## Key Conventions- Packages produce dual CJS/ESM output via `tsconfig.cjs.json` / `tsconfig.esm.json`- Public API is tracked via `extract-api` and `.api.md` report files in `api/` folders- Copyright headers are required on all source files (enforced by `copyrightLinter.js`): ``` /*--------------------------------------------------------------------------------------------- * Copyright (c) Bentley Systems, Incorporated. All rights reserved. * See LICENSE.md in the project root for license terms and full copyright notice. *--------------------------------------------------------------------------------------------*/ ```- User-visible changes to released packages require a changeset (`pnpm change`); packages with `"private": true` do not require a changeset.- Build order is managed by Lage (`lage build`, dependencies via `^build`)## Common Commands| Scope | Build | Test | Lint | Format ||-------|-------|------|------|--------|| All (repo root) | `pnpm build:all` | `pnpm cover:all` | `pnpm lint:all` | `pnpm format` || Single package | `pnpm build` | `pnpm test` | `pnpm lint` | `pnpm -w exec oxfmt --check .` || Scoped build | `pnpm lage build --to <package>` | — | — | — || Format fix | `pnpm format:fix` | — | — | — |

Frequently asked questions

Repo Context