Borrowing it
Nothing to install: this file belongs to badchars/github-security-mcp. 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/badchars/github-security-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/badchars/github-security-mcpWrote 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/badchars/github-security-mcp/claude-md)<a href="https://agentmods.dev/instructions/badchars/github-security-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/badchars/github-security-mcp/claude-md/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.
<a href="https://agentmods.dev/instructions/badchars/github-security-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/badchars/github-security-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.01080 | $0.01080 |
| Opus 5.5 | $0.00432 | $0.00432 |
| Sonnet 5.5 | $0.00216 | $0.00216 |
| Haiku 4.5 | $0.00108 | $0.00108 |
Grade A, and why
github-security-mcp CLAUDE.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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitHub Security MCP
Project Context
Bu proje hackbrowser-mcp (browser security testing) ve cloud-audit-mcp (AWS/Azure/GCP misconfig detection) sonrasında üçüncü MCP projesi. GitHub'ın Enterprise Security özelliklerini open-source MCP olarak sunacak — AI agent'a GitHub API'lerini vererek organization, repository, workflow, secret, dependency güvenlik analizi yapacak.
Neden Bu MCP?
GitHub Advanced Security (GHAS) Enterprise lisans gerektirir. Secret scanning, code scanning, Dependabot gibi özellikler var ama hepsi GitHub UI'da. Hiçbiri AI agent'a MCP üzerinden kontrol vermiyor. Fark: GHAS'ı açarsın dashboard'dan bakarsın. Bu MCP'de agent direkt GitHub API'lerini çağırır, org/repo/workflow security posture'unu analiz eder, attack path'leri bulur, fix önerir.
Hedef Kullanım
User: "GitHub organizasyonumdaki en kritik 5 security issue'yu bul"
Agent: → Org settings'i kontrol eder (2FA, SSO, member privileges)
→ Repo'ları tarar (branch protection, secret scanning, code scanning)
→ Workflow'ları analiz eder (injection, unpinned actions, over-permissive GITHUB_TOKEN)
→ Bulguları severity'ye göre sıralar
→ Her biri için fix komutu/config verir
Taranacak Alanlar
Organization Security:
- 2FA enforcement
- SSO/SAML configuration
- Member privileges (repo creation, forking, visibility defaults)
- Outside collaborators audit
- OAuth app / GitHub App installations
- IP allowlists
- Audit log patterns
Repository Security:
- Branch protection rules (require reviews, signed commits, admin bypass)
- CODEOWNERS enforcement
- Secret scanning enabled + alerts
- Code scanning (CodeQL) enabled + alerts
- Dependabot enabled + security alerts
- Security policy (SECURITY.md)
- Private vulnerability reporting
- Deploy keys audit
- Webhook security (insecure URLs, exposed secrets)
- Fork settings (allow fork, fork visibility)
GitHub Actions Security:
- Workflow injection (untrusted inputs: github.event.*, run:)
- pull_request_target + checkout PR head = arbitrary code execution
- Unpinned actions (tag vs SHA pinning)
- GITHUB_TOKEN default permissions (read-all vs least-privilege)
- Self-hosted runner exposure
- Environment protection rules
- Fork PR workflow approval settings
- Reusable workflow trust
- Artifact upload/download security
- OIDC for cloud deployments
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.
- 1mo ago First seen · 111 lines · 1,080 tokens per session scan A 99bbe2363196
github-security-mcp CLAUDE.md is an instructions file published in the GitHub repository badchars/github-security-mcp (16 stars, last pushed 7mo ago), licensed MIT. It adds 1,080 tokens to every session, about $0.0043 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.
Other instructions, from other repositories
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).
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.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.