Mail Security Tools

Name: Mail Security Tools
Price: 0.01 USDC
Availability: InStock

Free directory of email-security and MSP tools for small businesses. Free-tier notes are dated from each vendor page.

SocialLiveeip155:8453Exactvia facilitator:payAI

https://api.mailsecuritytools.com/v1/email-check

Email-validationEmail-verificationDisposable-emailMx-check

Settlements · 30d

185↑ 54%

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.

$40.97

Verified settled volume

185 settlements proven x402 by their on-chain EIP-3009 marker.

$0.010

Listed price

As published in the catalog. Always read the live 402 before paying.

—

Calls · 30d

Upstream's own call count for this endpoint, not ours.

—

Unique payers · 30d

Never called

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x2dAF658B01e257206375798a15832E9f547D65dD

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "offer": {
    "asset": "USDC",
    "input": {
      "type": "http",
      "method": "GET",
      "queryParams": {
        "email": "jane@example.com"
      }
    },
    "price": "$0.01",
    "network": "eip155:8453",
    "mime_type": "application/json",
    "how_to_pay": "x402 v2: sign the accepts[0] requirement and retry with the PAYMENT-SIGNATURE header (challenge also in the PAYMENT-REQUIRED header). Invalid input is answered before payment and never charged.",
    "input_schema": {
      "type": "object",
      "required": [
        "type",
        "method"
      ],
      "properties": {
        "type": {
          "type": "string",
          "const": "http"
        },
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "type": "object",
          "required": [
            "email"
          ],
          "properties": {
            "email": {
              "type": "string",
              "maxLength": 320,
              "description": "Email address"
            }
          }
        }
      },
      "additionalProperties": false
    },
    "price_atomic": "10000",
    "what_you_get": "Validate an email address: syntax, MX, disposable and role account. $0.01 USDC on Base per call. Returns a verdict of ok, risky or undeliverable without sending mail. Bad syntax returns 400, not charged. Don't use this for confirming a mailbox exists; no SMTP probe is made.",
    "output_schema": {
      "type": "object",
      "required": [
        "type"
      ],
      "properties": {
        "type": {
          "type": "string"
        },
        "example": {
          "type": "object"
        }
      }
    },
    "sample_output": {
      "email": "jane@example.com",
      "verdict": "ok",
      "disposable": false,
      "role_account": false
    },
    "related_endpoints": [
      {
        "url": "https://api.mailsecuritytools.com/v1/score",
        "price": "$0.01",
        "method": "GET",
        "description": "Grade a domain's email security: SPF, DMARC, DKIM and MX score. $0.01 USDC on Base per call. Returns a 0-100 score and A-F grade (SPF 30, DMARC 40, DKIM 25, MX 5) from live DNS, with findings and the "
      },
      {
        "url": "https://api.mailsecuritytools.com/v1/fix-plan",
        "price": "$1",
        "method": "GET",
        "description": "Get the exact SPF, DKIM and DMARC records to publish, with steps for your DNS host. $1 USDC on Base per call. Reads live MX, NS, SPF, DKIM and DMARC, detects the mail provider and DNS host, and return"
      },
      {
        "url": "https://api.mailsecuritytools.com/v1/bulk-score",
        "price": "$0.50",
        "method": "GET",
        "description": "Score email security (SPF, DMARC, DKIM, MX) for up to 100 domains in one call. $0.5 USDC on Base per call. Returns per-domain score, grade and issues plus a summary: grade counts, missing DMARC/SPF an"
      },
      {
        "url": "https://api.mailsecuritytools.com/v1/watch",
        "price": "$0.30",
        "method": "POST",
        "description": "Mail Security Tools API: Prepaid email setup watch: up to 25 domains for 30 days, webhook on change. Pay once, then each domain's SPF, DMARC, DKIM (common selectors), MX and score are re-checked about"
      }
    ]
  },
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x2dAF658B01e257206375798a15832E9f547D65dD",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 120
    }
  ],
  "resource": {
    "url": "https://api.mailsecuritytools.com/v1/email-check",
    "tags": [
      "email-validation",
      "email-verification",
      "disposable-email",
      "mx-check"
    ],
    "mimeType": "application/json",
    "description": "Validate an email address: syntax, MX, disposable and role account. $0.01 USDC on Base per call. Returns a verdict of ok, risky or undeliverable without sending mail. Bad syntax returns 400, not charged. Don't use this for confirming a mailbox exists; no SMTP probe is made.",
    "serviceName": "Mail Security Tools"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "email": "jane@example.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "email": "jane@example.com",
            "verdict": "ok",
            "disposable": false,
            "role_account": false
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "email"
                ],
                "properties": {
                  "email": {
                    "type": "string",
                    "maxLength": 320,
                    "description": "Email address"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.01USDC≈ $0.01 USD

on Base · exact scheme

Pay 0.01 USDC on Base to 0x2dAF…D65dD. The signed payment is good for 2 minutes.

Paid to: 0x2dAF…D65dD
USD Coin contract: 0x8335…02913
Payment window: 2 minutes
As published: 10000 smallest units

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x2dAF658B01e257206375798a15832E9f547D65dD",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "email": "jane@example.com"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "email": "jane@example.com",
          "verdict": "ok",
          "disposable": false,
          "role_account": false
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "email"
              ],
              "properties": {
                "email": {
                  "type": "string",
                  "maxLength": 320,
                  "description": "Email address"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-10-24 14:33Z
Last indexed by Roundhouse: 2026-10-26 13:16Z
Last enriched (probe, favicon, geo): 2026-10-24 17:15Z
x402 version: 2
Max timeout: 120s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service Mail Security Tools and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Mail%20Security%20Tools'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.mailsecuritytools.com/v1/email-check, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.