What is teams-mcp copilot-instructions.md?

Development instructions for a server that connects AI assistants to Microsoft Teams through Microsoft Graph, Microsoft’s API for services such as Teams, chats, users, and search. They document the code structure, authentication, data flow, and API types.

Use them when developing or reviewing teams-mcp, including its command-line authentication, Teams tools, search tools, and Graph API services.

They give contributors a shared map of the project so new changes follow its existing components and data-handling patterns.

How Ritchy-EU/teams-mcp configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to Ritchy-EU/teams-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.

Copy the file

curl -O https://raw.githubusercontent.com/Ritchy-EU/teams-mcp/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/Ritchy-EU/teams-mcp

Made for: GitHub Copilot.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/ritchy-eu/teams-mcp/copilot-instructions/github.svg)](https://agentmods.dev/instructions/ritchy-eu/teams-mcp/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/ritchy-eu/teams-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ritchy-eu/teams-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/ritchy-eu/teams-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ritchy-eu/teams-mcp/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,097 This file is loaded in full into every session.

When invoked 1,097 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.01097	$0.01097
Opus 5.5	$0.00439	$0.00439
Sonnet 5.5	$0.00219	$0.00219
Haiku 4.5	$0.00110	$0.00110

Measured 2mo ago against content hash eb0d814ed2d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

teams-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.

.github/copilot-instructions.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copilot Instructions — teams-mcp

Architecture

This is an MCP (Model Context Protocol) server that bridges AI assistants to Microsoft Graph APIs for Teams, chats, users, and search. It runs as a CLI tool (npx @ritchy-eu/teams-mcp@latest) over stdio transport.

Key components

src/index.ts — Entry point. Dual-mode: CLI commands (authenticate, check, logout) and MCP server mode (default). Registers all tool modules against a single McpServer instance.
src/services/graph.ts — GraphService singleton. Manages Microsoft Graph client initialization from a stored OAuth token (~/.msgraph-mcp-auth.json). All Graph API calls flow through graphService.getClient().
src/tools/*.ts — Tool registration modules (auth, chats, search, teams, users). Each exports a register*Tools(server, graphService) function that calls server.tool() with Zod schemas for input validation.
src/types/graph.ts — Re-exports @microsoft/microsoft-graph-types and defines custom response/summary interfaces (GraphApiResponse<T>, *Summary types). All API response shapes live here.
src/utils/ — Shared helpers: markdown.ts (markdown→sanitized HTML via marked+DOMPurify), attachments.ts (image hosted content uploads), users.ts (@mention parsing and user lookup).

Data flow

AI Assistant → stdio → McpServer → register*Tools handler → GraphService.getClient() → Microsoft Graph API

Development

npm run build          # Clean + tsc compile
npm run dev            # Watch mode (node --watch)
npm test               # vitest run
npm run test:watch     # vitest interactive
npm run test:coverage  # vitest with v8 coverage (80% threshold on all metrics)
npm run lint           # biome check
npm run lint:fix       # biome check --write --unsafe

TypeScript & Module Conventions

ESM-only ("type": "module" in package.json). Use .js extensions in import paths (TypeScript moduleResolution: "bundler").
Strict mode enabled with noUnusedLocals, noUnusedParameters, exactOptionalPropertyTypes, noImplicitOverride.
Prefix unused catch variables with underscore: catch (_error).
Linting/formatting via Biome (not ESLint/Prettier). Use node: protocol for Node.js built-in imports.

Read the full file on GitHub · 78 lines

Changes

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 · 78 lines · 1,097 tokens per session scan A eb0d814ed2d0

Subscribe to this mod's changes

teams-mcp copilot-instructions.md is an instructions file published in the GitHub repository Ritchy-EU/teams-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 1,097 tokens to every session, about $0.0044 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 2026-08-31.

teams-mcp copilot-instructions.md next to 6 instructions from other repositories
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teams-mcp: Instructions file for GitHub Copilot