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Diffuse-Native-Apps: Instructions file for GitHub Copilot

.github/copilot-instructions.md

Diffuse-Native-Apps copilot-instructions.md is an instructions file for GitHub Copilot from hoangsonww/Diffuse-Native-Apps. It costs 243 tokens per session, scanned A, original, MIT.

Repository instructions for coding agents working on Diffuse-Native-Apps, a local-first set of Apple apps whose data stays on the device. They describe the project structure, coding constraints, and checks to run.

In plain words
What is it for?
Use them when modifying the macOS, iOS, iPadOS, or watchOS apps, shared Swift packages, tests, or command-line tools.
Why use it?
They give an agent the project rules before it changes code, reducing incorrect edits, unwanted dependencies, and broken architecture.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file. Also seen: mentions AGENTS.md.

This is hoangsonww/Diffuse-Native-Apps's own configuration. It tells GitHub Copilot how to work on Diffuse-Native-Apps 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 Diffuse-Native-Apps configures →

not rated 11repo 1mo ago A scan 243 tokens original MIT
View source ↗ hoangsonww/Diffuse-Native-Apps hoangsonww.github.io
Reuse

Borrowing it

Nothing to install: this file belongs to hoangsonww/Diffuse-Native-Apps. 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/hoangsonww/Diffuse-Native-Apps/master/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/hoangsonww/Diffuse-Native-Apps

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 Diffuse-Native-Apps copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/hoangsonww/diffuse-native-apps/copilot-instructions/github.svg)](https://agentmods.dev/instructions/hoangsonww/diffuse-native-apps/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/hoangsonww/diffuse-native-apps/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/hoangsonww/diffuse-native-apps/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 Diffuse-Native-Apps copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/hoangsonww/diffuse-native-apps/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/hoangsonww/diffuse-native-apps/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 243 This file is loaded in full into every session.
When invoked 243 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 $0.00243 $0.00243
Opus 5.5 $0.00097 $0.00097
Sonnet 5.5 $0.00049 $0.00049
Haiku 4.5 $0.00024 $0.00024

Measured yesterday against content hash b5dfdf226696, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Diffuse-Native-Apps 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 yesterday.

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 · 23 lines

What it actually says

Diffuse is a local-first Apple-platform product. Four native apps (macOS, iOS, iPadOS, watchOS) share one capability-driven domain engine. Snapshots never leave the device.

Before changing code, read AGENTS.md (and the nested AGENTS.md in Packages/Apps/Tests/Tools) and Documentation/README.md. Skills live in .agents/skills/.

Rules:

  • No third-party Swift packages.
  • No signing identities, team IDs, or provisioning profiles.
  • CI produces unsigned artifacts only.
  • Do not add CodeQL, Super-Linter, Scorecard, Semgrep, or similar scanners.
  • Do not add Dependabot, Renovate, or any other dependency bot.
  • Adding a capability must not require edits to the diff engine, storage, search, export, or app screens.
  • Run ./Scripts/format.sh and swift test before finishing.
  • Do not weaken golden fixtures in Fixtures/ to make a test pass.

Dependency direction:

Apps → DiffuseUI → DiffuseCapabilities / DiffuseCore → DiffuseModels
                                                     → DiffuseDiff
                                                     → DiffuseStorage
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. yesterday First seen · 23 lines · 243 tokens per session scan A b5dfdf226696

Subscribe to this mod's changes

Diffuse-Native-Apps copilot-instructions.md is an instructions file published in the GitHub repository hoangsonww/Diffuse-Native-Apps (11 stars, last pushed 1mo ago), licensed MIT. It adds 243 tokens to every session, about $0.0010 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 2026-11-07.

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