{
  "x402Version": 2,
  "id": 27723,
  "slug": "27723",
  "resource": "https://apiacre.com/v1/web/email-auth",
  "description": "Check a public domain's email authentication and anti-spoofing posture using MX, SPF, DMARC, caller-selected DKIM, MTA-STS, TLS-RPT, and BIMI DNS evidence.",
  "type": "http",
  "serviceName": "API Acre",
  "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1786471603/bazaar-icons/3cd5dfbdc8c7913d.png",
  "resourceType": "AI Inference",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xa0BFa4f07281c9b248DC3AED2217836BcA24869B",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "B4CHWQeQn7GDLZD2aW6hpGG2bEseisBFLZYECA3HDLan",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "properties": {
          "data": {
            "additionalProperties": false,
            "properties": {
              "checkedAt": {
                "type": "string"
              },
              "collectionMs": {
                "type": "integer"
              },
              "dkim": {
                "type": "object"
              },
              "dmarc": {
                "type": "object"
              },
              "domain": {
                "type": "string"
              },
              "findings": {
                "items": {
                  "type": "object"
                },
                "type": "array"
              },
              "limitations": {
                "items": {
                  "type": "string"
                },
                "type": "array"
              },
              "mailRouting": {
                "type": "object"
              },
              "optionalPolicies": {
                "type": "object"
              },
              "posture": {
                "type": "object"
              },
              "provenance": {
                "type": "object"
              },
              "spf": {
                "type": "object"
              }
            },
            "required": [
              "domain",
              "mailRouting",
              "spf",
              "dmarc",
              "dkim",
              "optionalPolicies",
              "posture",
              "findings",
              "provenance",
              "limitations",
              "checkedAt",
              "collectionMs"
            ],
            "type": "object"
          },
          "meta": {
            "properties": {
              "cached": {
                "type": "boolean"
              },
              "duration_ms": {
                "type": "integer"
              },
              "next_actions": {
                "items": {
                  "type": "object"
                },
                "type": "array"
              },
              "sources": {
                "items": {
                  "type": "string"
                },
                "type": "array"
              },
              "warnings": {
                "items": {
                  "type": "string"
                },
                "type": "array"
              }
            },
            "required": [
              "duration_ms",
              "cached",
              "sources",
              "warnings",
              "next_actions"
            ],
            "type": "object"
          },
          "request_id": {
            "type": "string"
          },
          "service": {
            "type": "string"
          },
          "version": {
            "type": "string"
          }
        },
        "required": [
          "request_id",
          "service",
          "version",
          "data",
          "meta"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "dkim_selectors": [
              "protonmail"
            ],
            "domain": "apiacre.com"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "data": {
              "checkedAt": "2026-08-12T18:03:16+00:00",
              "collectionMs": 19,
              "dkim": {
                "checked": true,
                "checkedSelectors": [
                  "protonmail"
                ],
                "reason": null,
                "selectors": [
                  {
                    "configured": true,
                    "multipleRecords": false,
                    "recordCount": 1,
                    "revoked": false,
                    "selector": "protonmail"
                  }
                ]
              },
              "dmarc": {
                "configured": true,
                "multipleRecords": false,
                "policy": "quarantine",
                "recordCount": 1,
                "records": [
                  "v=DMARC1; p=quarantine"
                ]
              },
              "domain": "apiacre.com",
              "findings": [],
              "limitations": [
                "DNS answers are a time-specific recursive-resolver snapshot and may be cached.",
                "DKIM is checked only for selectors explicitly supplied by the caller.",
                "Published records do not prove delivery, domain ownership, sender identity, o..."
              ],
              "mailRouting": {
                "addressFallbackObserved": true,
                "mode": "explicit_mx",
                "mxRecords": [
                  "10 mail.protonmail.ch.",
                  "20 mailsec.protonmail.ch."
                ],
                "nullMx": false
              },
              "optionalPolicies": {
                "bimi": {
                  "configured": false,
                  "recordCount": 0,
                  "records": []
                },
                "mtaSts": {
                  "configured": false,
                  "recordCount": 0,
                  "records": []
                },
                "tlsReporting": {
                  "configured": false,
                  "recordCount": 0,
                  "records": []
                }
              },
              "posture": {
                "basis": "published DNS records only",
                "status": "enforcing"
              },
              "provenance": {
                "queries": [
                  "apiacre.com A",
                  "apiacre.com AAAA",
                  "apiacre.com MX",
                  "apiacre.com TXT",
                  "_dmarc.apiacre.com TXT",
                  "protonmail._domainkey.apiacre.com TXT",
                  "_mta-sts.apiacre.com TXT",
                  "_smtp._tls.apiacre.com TXT",
                  "default._bimi.apiacre.com TXT"
                ],
                "queryCount": 9,
                "source": "recursive DNS"
              },
              "spf": {
                "allQualifier": "softfail",
                "configured": true,
                "multipleRecords": false,
                "recordCount": 1,
                "records": [
                  "v=spf1 include:_spf.protonmail.ch ~all"
                ]
              }
            },
            "meta": {
              "cached": false,
              "duration_ms": 42,
              "next_actions": [],
              "sources": [],
              "warnings": []
            },
            "request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
            "service": "web.email-auth",
            "version": "1"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "dkim_selectors": {
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "domain": {
                    "type": "string"
                  }
                },
                "required": [
                  "domain"
                ],
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "data": {
                    "additionalProperties": false,
                    "properties": {
                      "checkedAt": {
                        "type": "string"
                      },
                      "collectionMs": {
                        "type": "integer"
                      },
                      "dkim": {
                        "type": "object"
                      },
                      "dmarc": {
                        "type": "object"
                      },
                      "domain": {
                        "type": "string"
                      },
                      "findings": {
                        "items": {
                          "type": "object"
                        },
                        "type": "array"
                      },
                      "limitations": {
                        "items": {
                          "type": "string"
                        },
                        "type": "array"
                      },
                      "mailRouting": {
                        "type": "object"
                      },
                      "optionalPolicies": {
                        "type": "object"
                      },
                      "posture": {
                        "type": "object"
                      },
                      "provenance": {
                        "type": "object"
                      },
                      "spf": {
                        "type": "object"
                      }
                    },
                    "required": [
                      "domain",
                      "mailRouting",
                      "spf",
                      "dmarc",
                      "dkim",
                      "optionalPolicies",
                      "posture",
                      "findings",
                      "provenance",
                      "limitations",
                      "checkedAt",
                      "collectionMs"
                    ],
                    "type": "object"
                  },
                  "meta": {
                    "properties": {
                      "cached": {
                        "type": "boolean"
                      },
                      "duration_ms": {
                        "type": "integer"
                      },
                      "next_actions": {
                        "items": {
                          "type": "object"
                        },
                        "type": "array"
                      },
                      "sources": {
                        "items": {
                          "type": "string"
                        },
                        "type": "array"
                      },
                      "warnings": {
                        "items": {
                          "type": "string"
                        },
                        "type": "array"
                      }
                    },
                    "required": [
                      "duration_ms",
                      "cached",
                      "sources",
                      "warnings",
                      "next_actions"
                    ],
                    "type": "object"
                  },
                  "request_id": {
                    "type": "string"
                  },
                  "service": {
                    "type": "string"
                  },
                  "version": {
                    "type": "string"
                  }
                },
                "required": [
                  "request_id",
                  "service",
                  "version",
                  "data",
                  "meta"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "payment-identifier": {
      "info": {
        "required": false
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "id": {
            "maxLength": 128,
            "minLength": 16,
            "pattern": "^[a-zA-Z0-9_-]+$",
            "type": "string"
          },
          "required": {
            "type": "boolean"
          }
        },
        "required": [
          "required"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "web",
    "audit",
    "email-authentication",
    "dns",
    "spf",
    "bazaar",
    "payment-identifier"
  ],
  "sourceHost": "apiacre.com",
  "lastUpdated": "2026-10-12T07:33:32.644Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 2,
    "lastCalledAt": "2026-10-12T07:33:32.191Z"
  },
  "metadata": {
    "serviceName": "API Acre",
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1786471603/bazaar-icons/3cd5dfbdc8c7913d.png",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "dkim_selectors": [
                "protonmail"
              ],
              "domain": "apiacre.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "checkedAt": "2026-08-12T18:03:16+00:00",
                "collectionMs": 19,
                "dkim": {
                  "checked": true,
                  "checkedSelectors": [
                    "protonmail"
                  ],
                  "reason": null,
                  "selectors": [
                    {
                      "configured": true,
                      "multipleRecords": false,
                      "recordCount": 1,
                      "revoked": false,
                      "selector": "protonmail"
                    }
                  ]
                },
                "dmarc": {
                  "configured": true,
                  "multipleRecords": false,
                  "policy": "quarantine",
                  "recordCount": 1,
                  "records": [
                    "v=DMARC1; p=quarantine"
                  ]
                },
                "domain": "apiacre.com",
                "findings": [],
                "limitations": [
                  "DNS answers are a time-specific recursive-resolver snapshot and may be cached.",
                  "DKIM is checked only for selectors explicitly supplied by the caller.",
                  "Published records do not prove delivery, domain ownership, sender identity, o..."
                ],
                "mailRouting": {
                  "addressFallbackObserved": true,
                  "mode": "explicit_mx",
                  "mxRecords": [
                    "10 mail.protonmail.ch.",
                    "20 mailsec.protonmail.ch."
                  ],
                  "nullMx": false
                },
                "optionalPolicies": {
                  "bimi": {
                    "configured": false,
                    "recordCount": 0,
                    "records": []
                  },
                  "mtaSts": {
                    "configured": false,
                    "recordCount": 0,
                    "records": []
                  },
                  "tlsReporting": {
                    "configured": false,
                    "recordCount": 0,
                    "records": []
                  }
                },
                "posture": {
                  "basis": "published DNS records only",
                  "status": "enforcing"
                },
                "provenance": {
                  "queries": [
                    "apiacre.com A",
                    "apiacre.com AAAA",
                    "apiacre.com MX",
                    "apiacre.com TXT",
                    "_dmarc.apiacre.com TXT",
                    "protonmail._domainkey.apiacre.com TXT",
                    "_mta-sts.apiacre.com TXT",
                    "_smtp._tls.apiacre.com TXT",
                    "default._bimi.apiacre.com TXT"
                  ],
                  "queryCount": 9,
                  "source": "recursive DNS"
                },
                "spf": {
                  "allQualifier": "softfail",
                  "configured": true,
                  "multipleRecords": false,
                  "recordCount": 1,
                  "records": [
                    "v=spf1 include:_spf.protonmail.ch ~all"
                  ]
                }
              },
              "meta": {
                "cached": false,
                "duration_ms": 42,
                "next_actions": [],
                "sources": [],
                "warnings": []
              },
              "request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
              "service": "web.email-auth",
              "version": "1"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "dkim_selectors": {
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "domain": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "domain"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "data": {
                      "additionalProperties": false,
                      "properties": {
                        "checkedAt": {
                          "type": "string"
                        },
                        "collectionMs": {
                          "type": "integer"
                        },
                        "dkim": {
                          "type": "object"
                        },
                        "dmarc": {
                          "type": "object"
                        },
                        "domain": {
                          "type": "string"
                        },
                        "findings": {
                          "items": {
                            "type": "object"
                          },
                          "type": "array"
                        },
                        "limitations": {
                          "items": {
                            "type": "string"
                          },
                          "type": "array"
                        },
                        "mailRouting": {
                          "type": "object"
                        },
                        "optionalPolicies": {
                          "type": "object"
                        },
                        "posture": {
                          "type": "object"
                        },
                        "provenance": {
                          "type": "object"
                        },
                        "spf": {
                          "type": "object"
                        }
                      },
                      "required": [
                        "domain",
                        "mailRouting",
                        "spf",
                        "dmarc",
                        "dkim",
                        "optionalPolicies",
                        "posture",
                        "findings",
                        "provenance",
                        "limitations",
                        "checkedAt",
                        "collectionMs"
                      ],
                      "type": "object"
                    },
                    "meta": {
                      "properties": {
                        "cached": {
                          "type": "boolean"
                        },
                        "duration_ms": {
                          "type": "integer"
                        },
                        "next_actions": {
                          "items": {
                            "type": "object"
                          },
                          "type": "array"
                        },
                        "sources": {
                          "items": {
                            "type": "string"
                          },
                          "type": "array"
                        },
                        "warnings": {
                          "items": {
                            "type": "string"
                          },
                          "type": "array"
                        }
                      },
                      "required": [
                        "duration_ms",
                        "cached",
                        "sources",
                        "warnings",
                        "next_actions"
                      ],
                      "type": "object"
                    },
                    "request_id": {
                      "type": "string"
                    },
                    "service": {
                      "type": "string"
                    },
                    "version": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "request_id",
                    "service",
                    "version",
                    "data",
                    "meta"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "payment-identifier": {
        "info": {
          "required": false
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "id": {
              "maxLength": 128,
              "minLength": 16,
              "pattern": "^[a-zA-Z0-9_-]+$",
              "type": "string"
            },
            "required": {
              "type": "boolean"
            }
          },
          "required": [
            "required"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "apiacre.com",
    "manifest_name": "apiacre.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "data": {
      "checkedAt": "2026-08-12T18:03:16+00:00",
      "collectionMs": 19,
      "dkim": {
        "checked": true,
        "checkedSelectors": [
          "protonmail"
        ],
        "reason": null,
        "selectors": [
          {
            "configured": true,
            "multipleRecords": false,
            "recordCount": 1,
            "revoked": false,
            "selector": "protonmail"
          }
        ]
      },
      "dmarc": {
        "configured": true,
        "multipleRecords": false,
        "policy": "quarantine",
        "recordCount": 1,
        "records": [
          "v=DMARC1; p=quarantine"
        ]
      },
      "domain": "apiacre.com",
      "findings": [],
      "limitations": [
        "DNS answers are a time-specific recursive-resolver snapshot and may be cached.",
        "DKIM is checked only for selectors explicitly supplied by the caller.",
        "Published records do not prove delivery, domain ownership, sender identity, o..."
      ],
      "mailRouting": {
        "addressFallbackObserved": true,
        "mode": "explicit_mx",
        "mxRecords": [
          "10 mail.protonmail.ch.",
          "20 mailsec.protonmail.ch."
        ],
        "nullMx": false
      },
      "optionalPolicies": {
        "bimi": {
          "configured": false,
          "recordCount": 0,
          "records": []
        },
        "mtaSts": {
          "configured": false,
          "recordCount": 0,
          "records": []
        },
        "tlsReporting": {
          "configured": false,
          "recordCount": 0,
          "records": []
        }
      },
      "posture": {
        "basis": "published DNS records only",
        "status": "enforcing"
      },
      "provenance": {
        "queries": [
          "apiacre.com A",
          "apiacre.com AAAA",
          "apiacre.com MX",
          "apiacre.com TXT",
          "_dmarc.apiacre.com TXT",
          "protonmail._domainkey.apiacre.com TXT",
          "_mta-sts.apiacre.com TXT",
          "_smtp._tls.apiacre.com TXT",
          "default._bimi.apiacre.com TXT"
        ],
        "queryCount": 9,
        "source": "recursive DNS"
      },
      "spf": {
        "allQualifier": "softfail",
        "configured": true,
        "multipleRecords": false,
        "recordCount": 1,
        "records": [
          "v=spf1 include:_spf.protonmail.ch ~all"
        ]
      }
    },
    "meta": {
      "cached": false,
      "duration_ms": 42,
      "next_actions": [],
      "sources": [],
      "warnings": []
    },
    "request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
    "service": "web.email-auth",
    "version": "1"
  }
}