Use it when adding or changing rules, processes, configuration, skills, or reusable code patterns in this repository, and when validating those changes.

It reduces mistakes caused by overlooking where files belong or breaking required documentation and configuration formats.

How mordilion/ai-instructions-and-prompts configures Claude Code and G

Q: What is ai-instructions-and-prompts copilot-instructions.md?

A repository-specific guide for AI coding agents working on the ai-iap plugin and its library of coding rules. It documents the project layout, Markdown requirements, and how to update and check rules.

Reuse

Borrowing it

Nothing to install: this file belongs to mordilion/ai-instructions-and-prompts. 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/mordilion/ai-instructions-and-prompts/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/mordilion/ai-instructions-and-prompts

Made for: Claude Code, 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/mordilion/ai-instructions-and-prompts/copilot-instructions/github.svg)](https://agentmods.dev/instructions/mordilion/ai-instructions-and-prompts/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/mordilion/ai-instructions-and-prompts/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/mordilion/ai-instructions-and-prompts/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/mordilion/ai-instructions-and-prompts/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/mordilion/ai-instructions-and-prompts/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 501 This file is loaded in full into every session.

When invoked 501 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	$0.00501	$0.00501
Opus 5	$0.00251	$0.00251
Sonnet 5	$0.00100	$0.00100
Haiku 4.5	$0.00050	$0.00050

Measured 10d ago against content hash 3764a5c230bc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

ai-instructions-and-prompts 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 10d 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 · 31 lines

How it starts

The opening of the file, as written. The whole thing — 31 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copilot Instructions — repo-specific guide

Concise guidance for AI coding agents working in this repository (the ai-iap Claude Code plugin and its rule library).

Project layout

Plugin root: plugin/ with manifest plugin/.claude-plugin/plugin.json.
Marketplace manifest: .claude-plugin/marketplace.json (repo root).
Rule library: plugin/lib/rules/<language>/ (e.g. dotnet/, typescript/, general/), frameworks under rules/<language>/frameworks/, structures under rules/<language>/frameworks/structures/.
Config: plugin/lib/config.json (languages → files → frameworks → structures), schema in plugin/lib/config.schema.json.
Code library (reusable patterns): plugin/lib/code-library/.
Processes: plugin/lib/processes/.
Skills: plugin/skills/setup/SKILL.md (setup wizard), plugin/skills/validate/SKILL.md (integrity checks).

Markdown rules (critical)

Every .md under plugin/lib/rules/** must start with a top-level # heading as the very first character — no leading blank lines, no UTF-8 BOM.
Rule files must not reference repo-internal paths that won't exist in user projects (e.g. .ai-iap/..., .cursor/rules/...). Plugin paths use the ${CLAUDE_PLUGIN_ROOT} placeholder.

Adding/updating rules

Create the .md under the matching language folder; first line is a # heading.
Register the filename (without .md) in plugin/lib/config.json under the language's files array (frameworks/structures in their respective objects).
Keep the established file pattern: # Title → > Scope → ## CRITICAL REQUIREMENTS (ALWAYS/NEVER directives) → numbered sections → ## AI Self-Check.

Validation

Run /ai-iap:validate (Claude Code skill) — checks config JSON, referenced files exist, markdown structure, forbidden path references, persona split files, and manifests.
CI: .github/workflows/validate.yml and ai-compatibility-tests.yml run on PRs.
Common failures: BOM/blank lines before the heading, or config.json entries not matching actual filenames.

Read the full file on GitHub · 31 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.

10d ago First seen · 31 lines · 501 tokens per session scan A 3764a5c230bc

Subscribe to this mod's changes

ai-instructions-and-prompts copilot-instructions.md is an instructions file published in the GitHub repository mordilion/ai-instructions-and-prompts (1 stars, last pushed 2mo ago), licensed MIT. It adds 501 tokens to every session, about $0.0025 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 2026-08-31.

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ai-instructions-and-prompts: Instructions file for Claude Code