Borrowing it
Nothing to install: this file belongs to dmarcguardhq/dmarcguard. 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/dmarcguardhq/dmarcguard/main/CLAUDE.mdgit clone --depth 1 https://github.com/dmarcguardhq/dmarcguardWrote 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/dmarcguardhq/dmarcguard/claude-md)<a href="https://agentmods.dev/instructions/dmarcguardhq/dmarcguard/claude-md"><img src="https://agentmods.dev/badge/instructions/dmarcguardhq/dmarcguard/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/dmarcguardhq/dmarcguard/claude-md"><img src="https://agentmods.dev/badge/instructions/dmarcguardhq/dmarcguard/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 | $0.04090 | $0.04090 |
| Opus 5 | $0.02045 | $0.02045 |
| Sonnet 5 | $0.00818 | $0.00818 |
| Haiku 4.5 | $0.00409 | $0.00409 |
Grade A, and why
dmarcguard 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 2d 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 — 428 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Parse DMARC - Project Guide
A Go application that fetches DMARC reports from IMAP mailboxes, parses them, and displays them in a Vue.js dashboard. Also supports MCP (Model Context Protocol) for AI assistant integration.
Tech Stack
- Backend: Go 1.25.4 (see go.mod for exact version)
- Frontend: Vue.js 3 with Vite
- Database: SQLite (supports both CGO and pure-Go variants)
- Package Manager: Bun (for frontend)
- Task Runner: Just (Justfile)
- CLI Framework: urfave/cli/v3
- JSON Library: goccy/go-json (high-performance)
- Logging: rs/zerolog (structured logging)
- Metrics: Prometheus client_golang
- MCP SDK: modelcontextprotocol/go-sdk
Project Structure
parse-dmarc/
├── main.go # Main application entry point
├── internal/
│ ├── api/ # REST API server and embedded frontend
│ │ └── server.go # HTTP server, routes, metrics middleware
│ ├── config/ # Configuration management (JSON + env vars)
│ │ └── config.go # Config loading and validation
│ ├── imap/ # IMAP client for fetching emails
│ │ └── client.go # Email fetching logic
│ ├── logger/ # Structured logging setup
│ │ └── logger.go # Zerolog configuration
│ ├── mcp/ # MCP (Model Context Protocol) server
│ │ ├── server.go # MCP server (stdio and HTTP/SSE)
│ │ ├── tools.go # MCP tool implementations
│ │ └── oauth/ # OAuth2 authentication for MCP
│ │ ├── config.go # OAuth configuration
│ │ ├── middleware.go # Bearer auth middleware
│ │ ├── metadata.go # RFC 9728 metadata endpoint
│ │ └── verifier.go # Token verification
│ ├── metrics/ # Prometheus metrics
│ │ └── metrics.go # Metrics definitions and HTTP middleware
│ ├── parser/ # DMARC XML parser
│ │ ├── dmarc.go # Parsing logic
│ │ └── dmarc_test.go # Parser tests
│ └── storage/ # SQLite database layer
│ ├── common.go # Shared SQL queries and types
│ ├── sqlite_cgo.go # CGO SQLite (mattn/go-sqlite3)
│ └── sqlite_no_cgo.go # Pure Go SQLite (modernc.org/sqlite)
├── src/ # Vue.js 3 frontend source
│ ├── App.vue # Main application component
│ ├── main.js # Vue entry point
│ ├── assets/
│ │ └── base.css # Base styles
│ ├── stores/ # Pinia-like state management
│ │ ├── index.js # Store exports
│ │ ├── theme.js # Theme (dark/light/system) store
│ │ └── settings.js # API endpoint settings store
│ └── components/
│ ├── dashboard/
│ │ ├── DashboardHero.vue # Dashboard header/hero section
│ │ ├── RecentReports.vue # Recent reports list
│ │ └── ReportDrawer.vue # Report detail drawer
│ ├── settings/
│ │ └── SettingsModal.vue # Settings modal (theme, API endpoint)
│ └── tools/
│ └── DnsGenerator.vue # DMARC DNS record generator
├── public/ # Static frontend assets (favicons, logos)
├── assets/ # Project assets (screenshots, images)
├── deploy/ # Deployment configurations
│ ├── coolify.yaml # Coolify deployment
│ ├── captain-definition # CapRover deployment
│ ├── digitalocean/ # DigitalOcean Droplet/Marketplace
│ │ ├── packer.pkr.hcl # Packer image build
│ │ ├── marketplace.yaml # DO Marketplace metadata
│ │ └── scripts/ # Setup scripts
│ └── dokploy/ # Dokploy deployment
│ ├── template.toml
│ └── docker-compose.yml
├── grafana/ # Grafana monitoring
│ ├── dashboard.json # Pre-built dashboard
│ └── provisioning.yaml # Auto-provisioning config
├── scripts/ # Utility scripts
├── Justfile # Build commands
├── Dockerfile # Multi-stage Docker build
├── compose.yml # Docker Compose for local dev
├── parse-dmarc.service # systemd service file
├── zeabur.yml # Zeabur deployment template
├── render.yaml # Render deployment config
├── Northflank.json # Northflank deployment config
├── ROADMAP.md # Product roadmap
├── CONTRIBUTING.md # Contribution guidelines
├── .goreleaser.yml # Release automation
└── .github/workflows/ci.yml # CI/CD pipeline
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.
- 2d ago Changed · +1 lines · +40 tokens per session 0af188929afb
- 8d ago First seen · 427 lines · 4,050 tokens per session scan A 84adcfc4f13a
dmarcguard CLAUDE.md is an instructions file published in the GitHub repository dmarcguardhq/dmarcguard (200 stars, last pushed 3d ago), licensed Apache-2.0. It adds 4,090 tokens to every session, about $0.0204 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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