Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/sitecore/xmcloud-starter-js/claude-mdgit clone --depth 1 https://github.com/Sitecore/xmcloud-starter-jsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/sitecore/xmcloud-starter-js/claude-md)<a href="https://agentmods.dev/instructions/sitecore/xmcloud-starter-js/claude-md"><img src="https://agentmods.dev/badge/instructions/sitecore/xmcloud-starter-js/claude-md.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.09671 | $0.09671 |
| Opus 5 | $0.04836 | $0.04836 |
| Sonnet 5 | $0.01934 | $0.01934 |
| Haiku 4.5 | $0.00967 | $0.00967 |
Grade A, and why
xmcloud-starter-js CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 1,278 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Project Context
Table of Contents
- Repository Overview
- Technology Stack
- Development Principles
- Upstream, forks, and pull request scope
- Constraints and Guidelines
- Code Style
- General Coding Principles
- JavaScript/TypeScript Rules
- Sitecore XM Cloud Rules
- Next.js Development Patterns
- Testing Patterns
- Safety Rules
Repository Overview
This is the XM Cloud Front End Application Starter Kits repository containing multiple Next.js starter applications and SPA examples for Sitecore XM Cloud development.
Repository Structure:
/examples/- Contains starter front-end applications (Next.js and SPA)/authoring/- Sitecore content items, templates, and deployment configurations/local-containers/- Docker setup for local development environmentsxmcloud.build.json- Primary configuration for XM Cloud deployment
Available Examples:
basic-nextjs- Simple Next.js starter with basic XM Cloud integrationkit-nextjs-article-starter- Solterra & Co. - Editorial-style template for lifestyle brandskit-nextjs-location-finder- Alaris - Car brand template with location finder functionalitykit-nextjs-product-listing- SYNC - Product-focused template for audio gear companieskit-nextjs-skate-park- Simple demo site showcasing component examplesbasic-spa- SPA starter kit with Angular and Node proxy
Each starter demonstrates:
- Tailwind-based styling with Shadcn/ui components
- Personalized homepage via URL parameters
- Modular component architecture with variants
- Localization support for English (en) and Canadian English (en-CA)
Technology Stack
Core Technologies:
- Next.js 14+ - React framework with App Router (all starters except
basic-nextjs-pages-router) - TypeScript - Strict type safety throughout all components
- Sitecore XM Cloud - Headless content management and delivery
- Sitecore Content SDK - Modern SDK for XM Cloud integration
- Tailwind CSS - Utility-first CSS with container queries (@container)
- Shadcn/ui - Modern component library with accessibility features
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 1,278 lines · 9,671 tokens per session scan A 919bee1a64b6
xmcloud-starter-js CLAUDE.md is an instructions file published in the GitHub repository Sitecore/xmcloud-starter-js (29 stars, last pushed yesterday), licensed Apache-2.0. It adds 9,671 tokens to every session, about $0.0484 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.