Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/d4rkninja/arcforge/copilot-instructionsgit clone --depth 1 https://github.com/d4rkNinja/arcforgeWhat 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 | $0.00091 | $0.00091 |
| Opus 5 | $0.00046 | $0.00046 |
| Sonnet 5 | $0.00018 | $0.00018 |
| Haiku 4.5 | $0.00009 | $0.00009 |
Grade A, and why
arcforge 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 3d 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.
What it actually says
GitHub Copilot Repository Instructions
Follow AGENTS.md.
This is a portable, reference-led Agent Skills repository. Keep SKILL.md frontmatter valid, preserve ## Output Contract and ## Stop Conditions, use progressive disclosure, and do not add native harness configuration or executable skill logic. Review affected behavioral cases with an approved model and run npx skills add . --list before proposing completion.
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.
- 3d ago First seen · 6 lines · 91 tokens per session scan A 5102e2eeaee3
arcforge copilot-instructions.md is an instructions file published in the GitHub repository d4rkNinja/arcforge (16 stars, last pushed 6d ago), licensed MIT. It adds 91 tokens to every session, about $0.0005 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 2026-08-30.
Other instructions, from other repositories
cli CLAUDE.md
Instructions for archcore-ai/cli, covering claude.md, search priority, archcore operations, managed blocks and build and test commands.
mcp-adr-analysis-server copilot-instructions.md
Instructions for tosin2013/mcp-adr-analysis-server, covering mcp adr analysis server - ai coding agent instructions, project overview, critical technical conventions, esm-only module system and typescript configuration.
sruja AGENTS.md
Instructions for sruja-ai/sruja, covering ⚡ quick reference (top 5 commands), architecture setup (ai agent workflow), step 1: understand the codebase, step 2: classify the architecture and step 3: generate ide context.
oh-my-mermaid CLAUDE.md
Instructions for oh-my-mermaid/oh-my-mermaid, covering project rules, readme localization, versioning, commits and terminology.
neat CLAUDE.md
Instructions for neat-technologies/neat, covering claude.md, binding rules, what neat is, what success looks like and conventions.
agentic AGENTS.md
Instructions for soulcodex/agentic, covering agentic library — agent instructions, what this repo contains, rules for working in this repo, file authoring and skill authoring.