Borrowing it
Nothing to install: this file belongs to Nlai741533/EFC-Plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Nlai741533/EFC-Plugin/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/Nlai741533/EFC-PluginWrote 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.
[](https://agentmods.dev/instructions/nlai741533/efc-plugin/copilot-instructions)<a href="https://agentmods.dev/instructions/nlai741533/efc-plugin/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/nlai741533/efc-plugin/copilot-instructions.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00414 | $0.00414 |
| Opus 5 | $0.00207 | $0.00207 |
| Sonnet 5 | $0.00083 | $0.00083 |
| Haiku 4.5 | $0.00041 | $0.00041 |
Grade A, and why
EFC-Plugin 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 6d 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
Copilot Coding Agent Instructions
Project Overview
This is EFC-Plugin, a Claude Code plugin that fact-checks AI-generated research reports. It is a small, stdlib-only Python project with a Markdown-based skill and JSON schemas.
Critical Rules
Security — NEVER commit secrets
- Never put tokens, API keys, or credentials in any file.
- Never set git remote URLs that contain embedded credentials.
- If you need to authenticate with GitHub, use
GITHUB_TOKENfrom the Actions environment. - The repo uses gitleaks pre-commit hooks — they will block secret-containing commits.
Test-First Development
- Always run
python3 -m unittest discover -s tests -vbefore submitting a PR. - Every new behavior must include a test. Tests use stdlib
unittestonly. - The golden tests in
tests/test_examples.pypin script output against fixtures — if you change a script, update the fixture too.
Version Consistency
- When bumping version: update BOTH
.claude-plugin/plugin.jsonAND.claude-plugin/marketplace.jsonversionfields. - CI checks that these two match, and that they match the git tag on release pushes.
Code Style
- Python scripts in
scripts/are stdlib-only (no third-party dependencies). Keep it that way. - The skill is pure Markdown at
skills/fact-check/SKILL.md. - JSON schemas go in
schemas/.
Documentation Integrity
FACTCHECK.mdis the repo's self-audit. It must reflect current reality — test counts, validation rules, verified claims.README.mdclaims must be verifiable. If you add a claim about what a script does, test it.
PR Conventions
- Keep PRs focused and small.
- Update
CHANGELOG.mdwith every change. - Run
gitleaks detect --source .locally if you touched anything credential-adjacent.
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.
- 6d ago First seen · 37 lines · 414 tokens per session scan A 6e3bae0f916a
EFC-Plugin copilot-instructions.md is an instructions file published in the GitHub repository Nlai741533/EFC-Plugin (2 stars, last pushed 3mo ago), licensed MIT. It adds 414 tokens to every session, about $0.0021 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.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.