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copilot-for-eclipse: Instructions file for GitHub Copilot

.github/copilot-instructions.md

copilot-for-eclipse copilot-instructions.md is an instructions file for GitHub Copilot from microsoft/copilot-for-eclipse. It costs 5,576 tokens per session, scanned A, original, MIT.

Repository instructions for the GitHub Copilot plugin for Eclipse, an extension that adds AI code suggestions, chat, and agent features to the Eclipse development environment. They describe its Java, Eclipse, Maven, language-server, authentication, and platform requirements.

In plain words
What is it for?
Use them when developing Copilot’s Eclipse integration, chat or completion features, agent tools, authentication, builds, or support for Windows, macOS, and Linux.
Why use it?
They give a coding agent the project context and compatibility rules needed to change and validate this Eclipse plugin correctly.

Instructions file for GitHub Copilot ✓ vendor

Written for GitHub Copilot: a Copilot instructions file.

This is microsoft/copilot-for-eclipse's own configuration. It tells GitHub Copilot how to work on copilot-for-eclipse itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything copilot-for-eclipse configures →

not rated 129repo 3d ago A scan 5,576 tokens original MIT
View source ↗ microsoft/copilot-for-eclipse marketplace.eclipse.org
About the project

GitHub Copilot for Eclipse is an Eclipse IDE plugin that adds AI-assisted code completion, edit suggestions, conversational agent support, and connections to external tools through MCP. Eclipse developers use it for coding assistance and more autonomous, project-aware development tasks. The catalogue entries provide skills and instructions for working with Copilot in Eclipse.

microsoft/copilot-for-eclipse · 129 stars · on GitHub · marketplace.eclipse.org

Reuse

Borrowing it

Nothing to install: this file belongs to microsoft/copilot-for-eclipse. 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/microsoft/copilot-for-eclipse/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/microsoft/copilot-for-eclipse

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.

agentmods badge for copilot-for-eclipse copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/microsoft/copilot-for-eclipse/copilot-instructions/github.svg)](https://agentmods.dev/instructions/microsoft/copilot-for-eclipse/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/microsoft/copilot-for-eclipse/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/microsoft/copilot-for-eclipse/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.

agentmods 80×15 button for copilot-for-eclipse copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/microsoft/copilot-for-eclipse/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/microsoft/copilot-for-eclipse/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 5,576 This file is loaded in full into every session.
When invoked 5,576 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.05576 $0.05576
Opus 5.5 $0.02230 $0.02230
Sonnet 5.5 $0.01115 $0.01115
Haiku 4.5 $0.00558 $0.00558

Measured 2mo ago against content hash 61cbebc9b641, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

copilot-for-eclipse 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 · 588 lines

How it starts

The opening of the file, as written. The whole thing — 588 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Copilot for Eclipse - Copilot Instructions

Project Overview

This is the GitHub Copilot for Eclipse plugin - an Eclipse IDE extension that brings AI-powered code completions, chat assistance, and intelligent coding features to Eclipse users.

Key Features

  • Code Completions: Real-time AI-powered code suggestions using ghost text and inline completions
  • Chat Interface: Conversational AI assistance with agent mode, custom chat modes, and context-aware responses
  • Agent Tools: Multi-step autonomous coding with tools for file operations, error analysis, and terminal execution
  • Language Server Integration: LSP4E-based connection to GitHub Copilot language server
  • Authentication: GitHub OAuth integration for Copilot subscription management
  • Multi-Platform Support: Windows, macOS (x64/aarch64), and Linux (x64/aarch64)

Tech Stack

  • Java: Primary language (Java 17+, with Eclipse 4.31+ requiring Java 21+)
  • Eclipse RCP/OSGi: Plugin architecture using Eclipse platform APIs
  • Maven/Tycho: Build system for Eclipse plugin development
  • LSP4E: Language Server Protocol integration for Eclipse
  • Node.js/JavaScript: Copilot language server (agent binaries bundled per platform)
  • JDT: Java Development Tools integration for Java-specific features
  • SWT: Standard Widget Toolkit for UI components

Validating Changes

You MUST verify compilation and code quality before declaring work complete!

  1. ALWAYS run Maven build to check for compilation errors:

    .\mvnw clean verify

  2. CHECK Checkstyle compliance (Google Java Style with custom rules):

    .\mvnw checkstyle:check

  3. RUN tests before submitting changes:

    .\mvnw test

  4. FIX all compilation errors, Checkstyle violations, and test failures before moving forward

Maven Build Structure

  • Root POM coordinates multi-module build with Tycho
  • Each bundle/feature/test has its own POM inheriting from root
  • Checkstyle validation runs during verify phase
  • Target platform defined in base.target, target-terminal.target, target-tm-terminal.target

Read the full file on GitHub · 588 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.

  1. 2mo ago First seen · 588 lines · 5,576 tokens per session scan A 61cbebc9b641

Subscribe to this mod's changes

copilot-for-eclipse copilot-instructions.md is an instructions file published in the GitHub repository microsoft/copilot-for-eclipse (129 stars, last pushed 3d ago), licensed MIT. It adds 5,576 tokens to every session, about $0.0223 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.

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