DnsGuard
Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes.
使うべきか
品質と安全性
A
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
~1,692トークン数（ツール定義）
~18.3 KB一般的なレスポンスサイズ
注意への影響は中程度（128k コンテキストの 1.32%）
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"dnsguard": {
"url": "https://dnsguard.mike-tusa.workers.dev/mcp"
}
}
}リモートエンドポイント
https://dnsguard.mike-tusa.workers.dev/mcpstreamable-httpできること
ツール一覧
ツール（1）
🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢check_domain(domain, dkim_selector, include_raw)
Audit the email-authentication DNS records of a domain. Returns a 0–100 score and A–F grade (MX 10, SPF 25, DMARC 30, DKIM 25, BIMI 10, plus up to 5 bonus points for MTA-STS and TLS-RPT, capped at 100), each check's status, published record, findings and recommended fixes, and a link to the full report. Read-only: it only queries public DNS and the domain's public MTA-STS policy file. Same engine and scoring as the DnsGuard JSON API (GET /api/check).
入力スキーマ
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"minLength": 1,
"maxLength": 300,
"description": "Domain to check, e.g. example.com. A URL or email address is accepted and reduced to its domain."
},
"dkim_selector": {
"type": "string",
"maxLength": 255,
"description": "Optional DKIM selector (the s= value from a DKIM-Signature header), e.g. s1 or google. Common selectors are always tried."
},
"include_raw": {
"type": "boolean",
"default": false,
"description": "Also return the full /api/check JSON (all records, SPF include tree, DKIM keys) in structuredContent.raw. Larger output."
}
},
"required": [
"domain"
],
"additionalProperties": false
}出力スキーマ
{
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"organizationalDomain": {
"type": "string"
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"grade": {
"type": "string",
"enum": [
"A",
"B",
"C",
"D",
"F"
]
},
"scoreBreakdown": {
"type": "object",
"properties": {
"base": {
"type": "number"
},
"bonus": {
"type": "number"
},
"bonusMax": {
"type": "number"
},
"cap": {
"type": "number"
}
}
},
"checks": {
"type": "object",
"properties": {
"mx": {
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"pass",
"warn",
"fail",
"info"
]
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"bonus": {
"type": "boolean",
"description": "true for MTA-STS / TLS-RPT (bonus points on top of the 100-point core)"
},
"record": {
"type": "string",
"description": "Published record (omitted when none was found)"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"level": {
"type": "string",
"enum": [
"pass",
"info",
"warn",
"fail"
]
},
"message": {
"type": "string"
}
},
"required": [
"level",
"message"
]
}
},
"recommendations": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"status",
"score",
"maxScore",
"findings",
"recommendations"
]
},
"spf": {
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"pass",
"warn",
"fail",
"info"
]
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"bonus": {
"type": "boolean",
"description": "true for MTA-STS / TLS-RPT (bonus points on top of the 100-point core)"
},
"record": {
"type": "string",
"description": "Published record (omitted when none was found)"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"level": {
"type": "string",
"enum": [
"pass",
"info",
"warn",
"fail"
]
},
"message": {
"type": "string"
}
},
"required": [
"level",
"message"
]
}
},
"recommendations": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"status",
"score",
"maxScore",
"findings",
"recommendations"
]
},
"dmarc": {
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"pass",
"warn",
"fail",
"info"
]
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"bonus": {
"type": "boolean",
"description": "true for MTA-STS / TLS-RPT (bonus points on top of the 100-point core)"
},
"record": {
"type": "string",
"description": "Published record (omitted when none was found)"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"level": {
"type": "string",
"enum": [
"pass",
"info",
"warn",
"fail"
]
},
"message": {
"type": "string"
}
},
"required": [
"level",
"message"
]
}
},
"recommendations": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"status",
"score",
"maxScore",
"findings",
"recommendations"
]
},
"dkim": {
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"pass",
"warn",
"fail",
"info"
]
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"bonus": {
"type": "boolean",
"description": "true for MTA-STS / TLS-RPT (bonus points on top of the 100-point core)"
},
"record": {
"type": "string",
"description": "Published record (omitted when none was found)"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"level": {
"type": "string",
"enum": [
"pass",
"info",
"warn",
"fail"
]
},
"message": {
"type": "string"
}
},
"required": [
"level",
"message"
]
}
},
"recommendations": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"status",
"score",
"maxScore",
"findings",
"recommendations"
]
},
"bimi": {
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"pass",
"warn",
"fail",
"info"
]
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"bonus": {
"type": "boolean",
"description": "true for MTA-STS / TLS-RPT (bonus points on top of the 100-point core)"
},
"record": {
"type": "string",
"description": "Published record (omitted when none was found)"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"level": {
"type": "string",
"enum": [
"pass",
"info",
"warn",
"fail"
]
},
"message": {
"type": "string"
}
},
"required": [
"level",
"message"
]
}
},
"recommendations": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"status",
"score",
"maxScore",
"findings",
"recommendations"
]
},
"mtaSts": {
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"pass",
"warn",
"fail",
"info"
]
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"bonus": {
"type": "boolean",
"description": "true for MTA-STS / TLS-RPT (bonus points on top of the 100-point core)"
},
"record": {
"type": "string",
"description": "Published record (omitted when none was found)"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"level": {
"type": "string",
"enum": [
"pass",
"info",
"warn",
"fail"
]
},
"message": {
"type": "string"
}
},
"required": [
"level",
"message"
]
}
},
"recommendations": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"status",
"score",
"maxScore",
"findings",
"recommendations"
]
},
"tlsRpt": {
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"pass",
"warn",
"fail",
"info"
]
},
"score": {
"type": "number"
},
"maxScore": {
"type": "number"
},
"bonus": {
"type": "boolean",
"description": "true for MTA-STS / TLS-RPT (bonus points on top of the 100-point core)"
},
"record": {
"type": "string",
"description": "Published record (omitted when none was found)"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"level": {
"type": "string",
"enum": [
"pass",
"info",
"warn",
"fail"
]
},
"message": {
"type": "string"
}
},
"required": [
"level",
"message"
]
}
},
"recommendations": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"status",
"score",
"maxScore",
"findings",
"recommendations"
]
}
}
},
"notes": {
"type": "array",
"items": {
"type": "string"
}
},
"checkedAt": {
"type": "string"
},
"cached": {
"type": "boolean"
},
"tier": {
"type": "string",
"enum": [
"anonymous",
"free",
"pro"
]
},
"reportUrl": {
"type": "string"
},
"apiUrl": {
"type": "string"
},
"version": {
"type": "string"
},
"raw": {
"type": "object",
"description": "Full /api/check response (only when include_raw is true)"
}
},
"required": [
"domain",
"score",
"maxScore",
"grade",
"checks",
"reportUrl"
]
}コミュニティ
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