Borrowing it
Nothing to install: this file belongs to ember-tooling/ember-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ember-tooling/ember-mcp/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/ember-tooling/ember-mcpWrote 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/ember-tooling/ember-mcp/copilot-instructions)<a href="https://agentmods.dev/instructions/ember-tooling/ember-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ember-tooling/ember-mcp/copilot-instructions/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/ember-tooling/ember-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ember-tooling/ember-mcp/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00583 | $0.00583 |
| Opus 5.5 | $0.00233 | $0.00233 |
| Sonnet 5.5 | $0.00117 | $0.00117 |
| Haiku 4.5 | $0.00058 | $0.00058 |
Grade A, and why
ember-mcp copilot-instructions.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 2mo 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitHub Copilot Instructions for ember-mcp
About This Repository
This repository builds ember-mcp, an MCP (Model Context Protocol) server that provides comprehensive access to Ember.js documentation, API references, guides, and community best practices.
Using the ember-mcp MCP Server
IMPORTANT: When working on Ember.js projects or providing Ember.js guidance, you should use the ember-mcp MCP server built by this repository. It provides 7 specialized tools for accessing Ember documentation and best practices.
How to Configure ember-mcp
For local development in this repository:
{
"mcpServers": {
"ember-docs": {
"command": "node",
"args": ["/absolute/path/to/ember-mcp/index.js"]
}
}
}
For production use:
{
"mcpServers": {
"ember": {
"command": "npx",
"args": ["-y", "ember-mcp"]
}
}
}
When to Use the MCP Tools
- Use
search_ember_docsfor general Ember.js queries - Use
get_api_referencefor specific API documentation - Use
get_best_practiceswhen providing implementation advice (ALWAYS) - Use
detect_package_managerBEFORE suggesting package installation commands - See README.md for complete tool documentation
Working with This Codebase
Code Style
- Modern ES modules (ESM) - use
import/export - Use descriptive variable names
- Minimal comments - code should be self-documenting
- Follow existing patterns in the codebase
Architecture
- index.js: Main MCP server with tool handlers
- lib/documentation-service.js: Documentation parsing and search
- lib/npm-service.js: npm registry integration
- lib/package-manager-detector.js: Package manager detection
- lib/formatters.js: Output formatting
Development Workflow
- This project uses pnpm as its package manager
- Development mode:
pnpm dev(auto-restart on changes) - Run tests:
pnpm test - Watch mode:
pnpm test:watch
Adding New Tools
- Define tool schema in
setupHandlers()in index.js - Add handler method (e.g.,
handleNewTool()) - Add to switch statement in request handler
- Update README.md documentation
- Add tests in
test/directory
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.
- 2mo ago First seen · 81 lines · 583 tokens per session scan A 20a8bc0bcb7d
ember-mcp copilot-instructions.md is an instructions file published in the GitHub repository ember-tooling/ember-mcp (28 stars, last pushed 4d ago), licensed MIT. It adds 583 tokens to every session, about $0.0023 per session on Opus 5.5. 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.
ember-mcp copilot-instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| ember-mcp copilot-instructions.mdember-tooling/ember-mcp | Instructions file | 28 | 4d ago | MIT | A | 583 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |