# Auth Posture — Email Deliverability & Spoofability Audit

> Auth Posture — Email Deliverability & Spoofability Audit — app-rowb-auth-posture-audit. Use this tool when you need to assess and improve email deliverability and security. It audits domain configurations to identify vulnerabilities in MX receiving, SPF, DMARC, and DKIM protections, as well as risks from disposable email addresses. By using Auth Posture, you can ensure your emails are authenticated and protected against spoofing, reducing the risk of being flagged as spam or blocked by recipients.

Canonical page: https://skillsregistry.net/skills/app-rowb-auth-posture-audit  
JSON: https://api.skillsregistry.net/v1/skills/app-rowb-auth-posture-audit

## Description

One-call domain audit: MX receiving, SPF/DMARC/DKIM spoofing protection, disposable-address risk.

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Updated:** 2026-09-26

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/app.rowb.auth-posture%2Faudit)

## Use it

MCP endpoint published by the skill: `https://auth-posture.rowb.app/mcp`

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "app-rowb-auth-posture-audit"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/app-rowb-auth-posture-audit` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/app-rowb-auth-posture-audit/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt