Mail Security Tools

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com.mailsecuritytools.api/email-securityv1.1.0 Domain verified

DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC).

Security

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https://api.mailsecuritytools.com/mcp

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Tool list from our last check. Connect live to refresh it.

bulk_email_security_score

Score up to 100 domains' email security in one call (SPF 30, DMARC 40, DKIM 25, MX 5 from live DNS): per-domain score, grade and issues, plus a summary with grade counts, domains missing DMARC or SPF, and the worst 10. For MSPs and agents checking a client or vendor list. Costs $0.50 USDC via x402; errors are not charged.

domainsarray, required

Domains, 1-100

Tools (7)

bulk_email_security_score

read-only

Argument	Type	Description
domains*	array	Domains, 1-100

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "domains"
  ],
  "properties": {
    "domains": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 320,
        "minLength": 3
      },
      "maxItems": 100,
      "minItems": 1,
      "description": "Domains, 1-100"
    }
  }
}

check_domain_email_security

Free. Look up a domain's MX, SPF (record, DNS lookup count, all qualifier), DMARC (policy, rua) and DKIM (common selectors, key size) from live DNS and list issues. No payment.

read-only

Argument	Type	Description
domain*	string	Domain, e.g. example.com (an email or URL on it also works)

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "domain"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "maxLength": 320,
      "minLength": 3,
      "description": "Domain, e.g. example.com (an email or URL on it also works)"
    }
  }
}

check_email_address

Check one email address: syntax, MX / null MX, disposable domain, role account, free provider; verdict ok / risky / undeliverable. No SMTP probe. Costs $0.01 USDC via x402; errors are not charged.

read-only

Argument	Type	Description
email*	string	Email address

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "email"
  ],
  "properties": {
    "email": {
      "type": "string",
      "maxLength": 320,
      "minLength": 3,
      "description": "Email address"
    }
  }
}

email_fix_plan

Email security fix plan for one domain: the exact SPF, DKIM and DMARC records to publish (create / replace / keep, name, value, why), in order, with click-path steps for the domain's DNS host and a staged DMARC rollout. Non-sending domains get a lock-down set. Costs $1 USDC via x402; errors are not charged.

read-only

Argument	Type	Description
domain*	string	Domain, e.g. example.com (an email or URL on it also works)

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "domain"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "maxLength": 320,
      "minLength": 3,
      "description": "Domain, e.g. example.com (an email or URL on it also works)"
    }
  }
}

email_security_score

Grade a domain's email security 0-100 (A-F): SPF 30, DMARC 40, DKIM 25, MX 5, from live DNS, with findings and the top 3 fixes. Read-only. Costs $0.01 USDC via x402; errors are not charged.

read-only

Argument	Type	Description
domain*	string	Domain, e.g. example.com (an email or URL on it also works)

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "domain"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "maxLength": 320,
      "minLength": 3,
      "description": "Domain, e.g. example.com (an email or URL on it also works)"
    }
  }
}

pricing

Free. Prices of the paid tools, payment network and receiving address.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}

watch_status

Free. Status of a paid email setup watch (created with POST /v1/watch): items, expiry, last check, last webhook delivery and current SPF/DMARC/DKIM/MX state.

read-only

Argument	Type	Description
watch_id*	string	Watch id, e.g. msw_abcdefghijklmnop

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "watch_id"
  ],
  "properties": {
    "watch_id": {
      "type": "string",
      "pattern": "^msw_[a-z2-7]{16}$",
      "description": "Watch id, e.g. msw_abcdefghijklmnop"
    }
  }
}