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Glama

Email MX

email_mx
Read-onlyIdempotent

Analyze email security: MX records, SPF policy, DMARC policy, DKIM probe across common+date-based selectors, mail provider, grade. Use to verify email-auth setup and phishing risk; for full audit use domain_report. Free: 30/hr, Pro: 500/hr. email_security.dkim_status reports honest evidence: 'verified' iff at least one selector responded, else 'unverifiable' (custom selectors cannot be discovered without prior knowledge). Grade: when DKIM verified, A=SPF+DMARC+DKIM/B=2of3/C=1of3; when DKIM unverifiable, A=SPF+DMARC/B=one/F=neither — DKIM absence is NOT penalized because it is unprovable in DNS. Returns {mx_records, mail_provider, email_security:{spf, dmarc, dkim_selectors, dkim_status, grade, issues}, summary}.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
domainYesDomain to analyze email configuration for (e.g. 'example.com', 'google.com')

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. Changed3 schema fields changed
    • changedOutput schema / properties / result / properties / mail_provider / type
      Previous value: -"string"New value: +[
      +  "string",
      +  "null"
      +]
    • changedOutput schema / properties / result / properties / next_calls / type
      Previous value: -"array"New value: +[
      +  "array",
      +  "null"
      +]
    • changedOutput schema / properties / result / properties / verdict / type
      Previous value: -"object"New value: +[
      +  "object",
      +  "null"
      +]
  2. Changed2 schema fields changed
    • changedOutput schema / properties / result / properties / mail_provider / type
      Previous value: -"object"New value: +"string"
    • changedOutput schema / properties / result / properties / next_calls / type
      Previous value: -"object"New value: +"array"
  3. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "properties": {
      +    "result": {
      +      "properties": {
      +        "domain": {
      +          "type": "string"
      +        },
      +        "email_security": {
      +          "type": "object"
      +        },
      +        "mail_provider": {
      +          "type": "object"
      +        },
      +        "mx_records": {
      +          "type": "array"
      +        },
      +        "next_calls": {
      +          "type": "object"
      +        },
      +        "summary": {
      +          "type": "string"
      +        },
      +        "verdict": {
      +          "type": "object"
      +        }
      +      },
      +      "required": [
      +        "domain"
      +      ],
      +      "type": "object"
      +    }
      +  },
      +  "required": [
      +    "result"
      +  ],
      +  "type": "object"
      +}
  4. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -{
      -  "$defs": {
      -    "EmailMxResponse": {
      -      "properties": {
      -        "domain": {
      -          "type": "string"
      -        },
      -        "email_security": {
      -          "$ref": "#/$defs/EmailSecurityDetail"
      -        },
      -        "mail_provider": {
      -          "anyOf": [
      -            {
      -              "type": "string"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "mx_records": {
      -          "items": {
      -            "$ref": "#/$defs/MxRecord"
      -          },
      -          "type": "array"
      -        },
      -        "next_calls": {
      -          "anyOf": [
      -            {
      -              "items": {
      -                "$ref": "#/$defs/PivotHint"
      -              },
      -              "type": "array"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "summary": {
      -          "type": "string"
      -        },
      -        "verdict": {
      -          "anyOf": [
      -            {
      -              "$ref": "#/$defs/Verdict"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        }
      -      },
      -      "required": [
      -        "domain"
      -      ],
      -      "type": "object"
      -    },
      -    "EmailSecurityDetail": {
      -      "properties": {
      -        "dkim_selectors": {
      -          "items": {
      -            "type": "string"
      -          },
      -          "type": "array"
      -        },
      -        "dkim_status": {
      -          "anyOf": [
      -            {
      -              "enum": [
      -                "verified",
      -                "unverifiable"
      -              ],
      -              "type": "string"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "dmarc": {
      -          "anyOf": [
      -            {
      -              "type": "string"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "grade": {
      -          "type": "string"
      -        },
      -        "issues": {
      -          "items": {
      -            "type": "string"
      -          },
      -          "type": "array"
      -        },
      -        "spf": {
      -          "anyOf": [
      -            {
      -              "type": "string"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        }
      -      },
      -      "type": "object"
      -    },
      -    "ErrorDetail": {
      -      "properties": {
      -        "code": {
      -          "enum": [
      -            "invalid_argument",
      -            "not_found",
      -            "rate_limit_exceeded",
      -            "auth_required",
      -            "tier_limit",
      -            "upstream_timeout",
      -            "upstream_error",
      -            "internal_error"
      -          ],
      -          "type": "string"
      -        },
      -        "docs_url": {
      -          "anyOf": [
      -            {
      -              "type": "string"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "message": {
      -          "maxLength": 500,
      -          "type": "string"
      -        },
      -        "retry_after_seconds": {
      -          "anyOf": [
      -            {
      -              "type": "integer"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "upgrade_url": {
      -          "anyOf": [
      -            {
      -              "type": "string"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        }
      -      },
      -      "required": [
      -        "code",
      -        "message"
      -      ],
      -      "type": "object"
      -    },
      -    "ErrorResponse": {
      -      "properties": {
      -        "error": {
      -          "$ref": "#/$defs/ErrorDetail"
      -        }
      -      },
      -      "required": [
      -        "error"
      -      ],
      -      "type": "object"
      -    },
      -    "MxRecord": {
      -      "properties": {
      -        "host": {
      -          "type": "string"
      -        },
      -        "priority": {
      -          "type": "integer"
      -        }
      -      },
      -      "required": [
      -        "priority",
      -        "host"
      -      ],
      -      "type": "object"
      -    },
      -    "PivotHint": {
      -      "additionalProperties": true,
      -      "properties": {
      -        "input": {
      -          "type": "string"
      -        },
      -        "params": {
      -          "anyOf": [
      -            {
      -              "additionalProperties": {
      -                "type": "string"
      -              },
      -              "type": "object"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "reason": {
      -          "type": "string"
      -        },
      -        "tool": {
      -          "enum": [
      -            "cve_lookup",
      -            "cve_search",
      -            "cve_leading",
      -            "bulk_cve_lookup",
      -            "calculate_risk_score",
      -            "get_cvss_details",
      -            "exploit_lookup",
      -            "kev_detail",
      -            "cwe_lookup",
      -            "subdomain_enum",
      -            "ssl_check",
      -            "tech_fingerprint",
      -            "asn_lookup",
      -            "ip_lookup",
      -            "ioc_lookup",
      -            "bulk_ioc_lookup",
      -            "hash_lookup",
      -            "threat_intel",
      -            "threat_report",
      -            "audit_domain",
      -            "domain_report",
      -            "dns_lookup",
      -            "whois_lookup",
      -            "wayback_lookup",
      -            "scan_headers",
      -            "check_headers",
      -            "check_secrets",
      -            "check_injection",
      -            "check_dependencies",
      -            "email_mx",
      -            "email_security_posture",
      -            "email_disposable",
      -            "email_verify",
      -            "robots_txt",
      -            "redirect_chain",
      -            "brand_assets",
      -            "seo_audit",
      -            "phone_lookup",
      -            "username_lookup",
      -            "password_check",
      -            "phishing_check",
      -            "atlas_technique_lookup",
      -            "atlas_technique_search",
      -            "bulk_atlas_technique_lookup",
      -            "atlas_case_study_lookup",
      -            "atlas_case_study_search",
      -            "d3fend_defense_lookup",
      -            "d3fend_defense_search",
      -            "d3fend_defense_for_attack",
      -            "d3fend_attack_coverage",
      -            "sigma_rule_lookup",
      -            "bulk_sigma_rule_lookup",
      -            "tech_stack_cve_audit"
      -          ],
      -          "type": "string"
      -        }
      -      },
      -      "required": [
      -        "tool",
      -        "input",
      -        "reason"
      -      ],
      -      "type": "object"
      -    },
      -    "Verdict": {
      -      "properties": {
      -        "completeness": {
      -          "enum": [
      -            "complete",
      -            "partial",
      -            "minimal"
      -          ],
      -          "type": "string"
      -        },
      -        "data_age_seconds": {
      -          "anyOf": [
      -            {
      -              "type": "integer"
      -            },
      -            {
      -              "type": "null"
      -            }
      -          ]
      -        },
      -        "deterministic": {
      -          "type": "boolean"
      -        },
      -        "falsifiable_fields": {
      -          "items": {
      -            "type": "string"
      -          },
      -          "type": "array"
      -        },
      -        "sources_queried": {
      -          "items": {
      -            "type": "string"
      -          },
      -          "type": "array"
      -        },
      -        "sources_unavailable": {
      -          "items": {
      -            "type": "string"
      -          },
      -          "type": "array"
      -        }
      -      },
      -      "required": [
      -        "deterministic"
      -      ],
      -      "type": "object"
      -    }
      -  },
      -  "properties": {
      -    "result": {
      -      "anyOf": [
      -        {
      -          "$ref": "#/$defs/EmailMxResponse"
      -        },
      -        {
      -          "$ref": "#/$defs/ErrorResponse"
      -        }
      -      ]
      -    }
      -  },
      -  "required": [
      -    "result"
      -  ],
      -  "type": "object"
      -}New value: +null
  5. Changed72 schema fields changed
    • removedOutput schema / $defs / EmailMxResponse / properties / domain / title
      Removed value: -"Domain"
    • removedOutput schema / $defs / EmailMxResponse / properties / mail_provider / default
      Removed value: -null
    • removedOutput schema / $defs / EmailMxResponse / properties / mail_provider / title
      Removed value: -"Mail Provider"
    • removedOutput schema / $defs / EmailMxResponse / properties / mx_records / title
      Removed value: -"Mx Records"
    • removedOutput schema / $defs / EmailMxResponse / properties / next_calls / default
      Removed value: -null
    • removedOutput schema / $defs / EmailMxResponse / properties / next_calls / description
      Removed value: -"Suggested follow-up MCP tool calls. Ordered by relevance; agents should chain these without re-prompting the user."
    • removedOutput schema / $defs / EmailMxResponse / properties / next_calls / title
      Removed value: -"Next Calls"
    • removedOutput schema / $defs / EmailMxResponse / properties / summary / default
      Removed value: -""
    • removedOutput schema / $defs / EmailMxResponse / properties / summary / title
      Removed value: -"Summary"
    • removedOutput schema / $defs / EmailMxResponse / properties / verdict / default
      Removed value: -null
    • removedOutput schema / $defs / EmailMxResponse / properties / verdict / description
      Removed value: -"Falsifiability metadata: sources_queried, sources_unavailable, completeness, deterministic flag. Lets agents distinguish 'no data' from 'source failed' without re-running the call."
    • removedOutput schema / $defs / EmailMxResponse / title
      Removed value: -"EmailMxResponse"
    • removedOutput schema / $defs / EmailSecurityDetail / properties / dkim_selectors / title
      Removed value: -"Dkim Selectors"
    • removedOutput schema / $defs / EmailSecurityDetail / properties / dkim_status / default
      Removed value: -null
    • removedOutput schema / $defs / EmailSecurityDetail / properties / dkim_status / description
      Removed value: -"'verified' when at least one DKIM selector responded; 'unverifiable' when none of the probed common/date-based selectors matched. Custom selectors cannot be discovered without prior knowledge."
    • removedOutput schema / $defs / EmailSecurityDetail / properties / dkim_status / title
      Removed value: -"Dkim Status"
    • removedOutput schema / $defs / EmailSecurityDetail / properties / dmarc / default
      Removed value: -null
    • removedOutput schema / $defs / EmailSecurityDetail / properties / dmarc / title
      Removed value: -"Dmarc"
    • removedOutput schema / $defs / EmailSecurityDetail / properties / grade / default
      Removed value: -"F"
    • removedOutput schema / $defs / EmailSecurityDetail / properties / grade / title
      Removed value: -"Grade"
    • removedOutput schema / $defs / EmailSecurityDetail / properties / issues / title
      Removed value: -"Issues"
    • removedOutput schema / $defs / EmailSecurityDetail / properties / spf / default
      Removed value: -null
    • removedOutput schema / $defs / EmailSecurityDetail / properties / spf / title
      Removed value: -"Spf"
    • removedOutput schema / $defs / EmailSecurityDetail / title
      Removed value: -"EmailSecurityDetail"
    • removedOutput schema / $defs / ErrorDetail / description
      Removed value: -"Structured failure body. Codes mirror app/exceptions.AppException\nsubclasses; agent retry / upgrade decisions key off `code`, not `message`."
    • removedOutput schema / $defs / ErrorDetail / properties / code / description
      Removed value: -"Stable machine-readable failure category. Agents key retry/upgrade decisions off this."
    • removedOutput schema / $defs / ErrorDetail / properties / code / title
      Removed value: -"Code"
    • removedOutput schema / $defs / ErrorDetail / properties / docs_url / default
      Removed value: -null
    • removedOutput schema / $defs / ErrorDetail / properties / docs_url / description
      Removed value: -"Documentation pointer (e.g. tool input contract) when code='invalid_argument'."
    • removedOutput schema / $defs / ErrorDetail / properties / docs_url / title
      Removed value: -"Docs Url"
    • removedOutput schema / $defs / ErrorDetail / properties / message / description
      Removed value: -"Human-readable detail. Free text — never parse. Capped at 500 chars to prevent oversized upstream errors from bloating responses."
    • removedOutput schema / $defs / ErrorDetail / properties / message / title
      Removed value: -"Message"
    • removedOutput schema / $defs / ErrorDetail / properties / retry_after_seconds / default
      Removed value: -null
    • removedOutput schema / $defs / ErrorDetail / properties / retry_after_seconds / description
      Removed value: -"When code='rate_limit_exceeded', the minimum seconds to wait before retrying."
    • removedOutput schema / $defs / ErrorDetail / properties / retry_after_seconds / title
      Removed value: -"Retry After Seconds"
    • removedOutput schema / $defs / ErrorDetail / properties / upgrade_url / default
      Removed value: -null
    • removedOutput schema / $defs / ErrorDetail / properties / upgrade_url / description
      Removed value: -"Pricing/upgrade URL when code='tier_limit' or 'rate_limit_exceeded' on the Free tier."
    • removedOutput schema / $defs / ErrorDetail / properties / upgrade_url / title
      Removed value: -"Upgrade Url"
    • removedOutput schema / $defs / ErrorDetail / title
      Removed value: -"ErrorDetail"
    • removedOutput schema / $defs / ErrorResponse / description
      Removed value: -"MCP error envelope. Tool return type is always\n`SpecificResponse | ErrorResponse` — Union flag tells the agent which arm\narrived without parsing the inner body."
    • removedOutput schema / $defs / ErrorResponse / title
      Removed value: -"ErrorResponse"
    • removedOutput schema / $defs / MxRecord / properties / host / title
      Removed value: -"Host"
    • removedOutput schema / $defs / MxRecord / properties / priority / title
      Removed value: -"Priority"
    • removedOutput schema / $defs / MxRecord / title
      Removed value: -"MxRecord"
    • removedOutput schema / $defs / PivotHint / description
      Removed value: -"A suggested follow-up MCP tool call. Surfaced inside response.next_calls so\nLLM agents can chain related lookups without manual prompting. Each hint names\nthe tool, the input value to pass, and a short reason explaining why this\npivot adds value in the current context."
    • removedOutput schema / $defs / PivotHint / properties / input / description
      Removed value: -"Suggested input value to pass to the tool — typically a CVE ID, CWE ID, domain, or IP. Pre-populated from the current response so the agent can call the next tool without re-deriving the argument."
    • removedOutput schema / $defs / PivotHint / properties / input / title
      Removed value: -"Input"
    • removedOutput schema / $defs / PivotHint / properties / params / default
      Removed value: -null
    • removedOutput schema / $defs / PivotHint / properties / params / description
      Removed value: -"Optional extra kwargs to pass alongside `input`. Used by pivot generators when the next call benefits from a secondary parameter, e.g. {'exclude_id': 'AML.T0051'} to skip the originating technique from a sibling-tactic search. Omitted when no extra args are needed."
    • removedOutput schema / $defs / PivotHint / properties / params / title
      Removed value: -"Params"
    • removedOutput schema / $defs / PivotHint / properties / reason / description
      Removed value: -"Short rationale (one sentence) for why this follow-up call adds value, e.g. 'Federal patch deadline + ransomware association', 'Public exploits / PoC availability'."
    • removedOutput schema / $defs / PivotHint / properties / reason / title
      Removed value: -"Reason"
    • removedOutput schema / $defs / PivotHint / properties / tool / description
      Removed value: -"Canonical MCP tool name to call next. Constrained to known operation_ids in tools/list — adding a new tool here requires expanding the Literal."
    • removedOutput schema / $defs / PivotHint / properties / tool / title
      Removed value: -"Tool"
    • removedOutput schema / $defs / PivotHint / title
      Removed value: -"PivotHint"
    • removedOutput schema / $defs / Verdict / properties / completeness / default
      Removed value: -"complete"
    • removedOutput schema / $defs / Verdict / properties / completeness / description
      Removed value: -"'complete' = every planned source returned data; 'partial' = at least one source in sources_unavailable failed or was skipped; 'minimal' = only the primary/required source returned, optional enrichment missing."
    • removedOutput schema / $defs / Verdict / properties / completeness / title
      Removed value: -"Completeness"
    • removedOutput schema / $defs / Verdict / properties / data_age_seconds / default
      Removed value: -null
    • removedOutput schema / $defs / Verdict / properties / data_age_seconds / description
      Removed value: -"Seconds elapsed since the oldest cached source was fetched, or null when every source was queried live for this request. Use to judge freshness."
    • removedOutput schema / $defs / Verdict / properties / data_age_seconds / title
      Removed value: -"Data Age Seconds"
    • removedOutput schema / $defs / Verdict / properties / deterministic / description
      Removed value: -"True when the response is fully reproducible from the listed sources for the same input at the same moment (no randomness, no model inference). False for endpoints that include probabilistic scoring or LLM output."
    • removedOutput schema / $defs / Verdict / properties / deterministic / title
      Removed value: -"Deterministic"
    • removedOutput schema / $defs / Verdict / properties / falsifiable_fields / description
      Removed value: -"Top-level response fields whose values a caller can independently re-derive from the named upstream sources (e.g. 'dns', 'ssl', 'whois'). Fields not in this list are derived/computed and cannot be directly re-verified."
    • removedOutput schema / $defs / Verdict / properties / falsifiable_fields / title
      Removed value: -"Falsifiable Fields"
    • removedOutput schema / $defs / Verdict / properties / sources_queried / description
      Removed value: -"Canonical source identifiers successfully consulted for this response (e.g. 'ripe_stat', 'shodan_internetdb', 'firehol'). Agent-readable list, order not significant."
    • removedOutput schema / $defs / Verdict / properties / sources_queried / title
      Removed value: -"Sources Queried"
    • removedOutput schema / $defs / Verdict / properties / sources_unavailable / description
      Removed value: -"Sources that were expected but not returned — either intentionally skipped (lite mode, tier gating) or failed (quota, timeout, upstream down). Empty list means every planned source produced data."
    • removedOutput schema / $defs / Verdict / properties / sources_unavailable / title
      Removed value: -"Sources Unavailable"
    • removedOutput schema / $defs / Verdict / title
      Removed value: -"Verdict"
    • removedOutput schema / properties / result / title
      Removed value: -"Result"
    • removedOutput schema / title
      Removed value: -"email_mxOutput"
  6. Changed1 schema field changed
    • changedOutput schema / $defs / PivotHint / properties / tool / enum
      Previous value: -[
      -  "cve_lookup",
      -  "cve_search",
      -  "cve_leading",
      -  "bulk_cve_lookup",
      -  "calculate_risk_score",
      -  "get_cvss_details",
      -  "exploit_lookup",
      -  "kev_detail",
      -  "cwe_lookup",
      -  "subdomain_enum",
      -  "ssl_check",
      -  "tech_fingerprint",
      -  "asn_lookup",
      -  "ip_lookup",
      -  "ioc_lookup",
      -  "bulk_ioc_lookup",
      -  "hash_lookup",
      -  "threat_intel",
      -  "threat_report",
      -  "audit_domain",
      -  "domain_report",
      -  "dns_lookup",
      -  "whois_lookup",
      -  "wayback_lookup",
      -  "scan_headers",
      -  "check_headers",
      -  "check_secrets",
      -  "check_injection",
      -  "check_dependencies",
      -  "email_mx",
      -  "email_security_posture",
      -  "email_disposable",
      -  "email_verify",
      -  "robots_txt",
      -  "redirect_chain",
      -  "brand_assets",
      -  "seo_audit",
      -  "phone_lookup",
      -  "username_lookup",
      -  "password_check",
      -  "phishing_check",
      -  "atlas_technique_lookup",
      -  "atlas_technique_search",
      -  "bulk_atlas_technique_lookup",
      -  "atlas_case_study_lookup",
      -  "atlas_case_study_search",
      -  "d3fend_defense_lookup",
      -  "d3fend_defense_search",
      -  "d3fend_defense_for_attack",
      -  "d3fend_attack_coverage",
      -  "sigma_rule_lookup",
      -  "bulk_sigma_rule_lookup"
      -]New value: +[
      +  "cve_lookup",
      +  "cve_search",
      +  "cve_leading",
      +  "bulk_cve_lookup",
      +  "calculate_risk_score",
      +  "get_cvss_details",
      +  "exploit_lookup",
      +  "kev_detail",
      +  "cwe_lookup",
      +  "subdomain_enum",
      +  "ssl_check",
      +  "tech_fingerprint",
      +  "asn_lookup",
      +  "ip_lookup",
      +  "ioc_lookup",
      +  "bulk_ioc_lookup",
      +  "hash_lookup",
      +  "threat_intel",
      +  "threat_report",
      +  "audit_domain",
      +  "domain_report",
      +  "dns_lookup",
      +  "whois_lookup",
      +  "wayback_lookup",
      +  "scan_headers",
      +  "check_headers",
      +  "check_secrets",
      +  "check_injection",
      +  "check_dependencies",
      +  "email_mx",
      +  "email_security_posture",
      +  "email_disposable",
      +  "email_verify",
      +  "robots_txt",
      +  "redirect_chain",
      +  "brand_assets",
      +  "seo_audit",
      +  "phone_lookup",
      +  "username_lookup",
      +  "password_check",
      +  "phishing_check",
      +  "atlas_technique_lookup",
      +  "atlas_technique_search",
      +  "bulk_atlas_technique_lookup",
      +  "atlas_case_study_lookup",
      +  "atlas_case_study_search",
      +  "d3fend_defense_lookup",
      +  "d3fend_defense_search",
      +  "d3fend_defense_for_attack",
      +  "d3fend_attack_coverage",
      +  "sigma_rule_lookup",
      +  "bulk_sigma_rule_lookup",
      +  "tech_stack_cve_audit"
      +]
  7. Changed1 schema field changed
    • changedOutput schema / $defs / PivotHint / properties / tool / enum
      Previous value: -[
      -  "cve_lookup",
      -  "cve_search",
      -  "cve_leading",
      -  "bulk_cve_lookup",
      -  "calculate_risk_score",
      -  "get_cvss_details",
      -  "exploit_lookup",
      -  "kev_detail",
      -  "cwe_lookup",
      -  "subdomain_enum",
      -  "ssl_check",
      -  "tech_fingerprint",
      -  "asn_lookup",
      -  "ip_lookup",
      -  "ioc_lookup",
      -  "bulk_ioc_lookup",
      -  "hash_lookup",
      -  "threat_intel",
      -  "threat_report",
      -  "audit_domain",
      -  "domain_report",
      -  "dns_lookup",
      -  "whois_lookup",
      -  "wayback_lookup",
      -  "scan_headers",
      -  "check_headers",
      -  "check_secrets",
      -  "check_injection",
      -  "check_dependencies",
      -  "email_mx",
      -  "email_security_posture",
      -  "email_disposable",
      -  "email_verify",
      -  "robots_txt",
      -  "redirect_chain",
      -  "brand_assets",
      -  "seo_audit",
      -  "phone_lookup",
      -  "username_lookup",
      -  "password_check",
      -  "phishing_check",
      -  "atlas_technique_lookup",
      -  "atlas_technique_search",
      -  "bulk_atlas_technique_lookup",
      -  "atlas_case_study_lookup",
      -  "atlas_case_study_search",
      -  "d3fend_defense_lookup",
      -  "d3fend_defense_search",
      -  "d3fend_defense_for_attack",
      -  "d3fend_attack_coverage"
      -]New value: +[
      +  "cve_lookup",
      +  "cve_search",
      +  "cve_leading",
      +  "bulk_cve_lookup",
      +  "calculate_risk_score",
      +  "get_cvss_details",
      +  "exploit_lookup",
      +  "kev_detail",
      +  "cwe_lookup",
      +  "subdomain_enum",
      +  "ssl_check",
      +  "tech_fingerprint",
      +  "asn_lookup",
      +  "ip_lookup",
      +  "ioc_lookup",
      +  "bulk_ioc_lookup",
      +  "hash_lookup",
      +  "threat_intel",
      +  "threat_report",
      +  "audit_domain",
      +  "domain_report",
      +  "dns_lookup",
      +  "whois_lookup",
      +  "wayback_lookup",
      +  "scan_headers",
      +  "check_headers",
      +  "check_secrets",
      +  "check_injection",
      +  "check_dependencies",
      +  "email_mx",
      +  "email_security_posture",
      +  "email_disposable",
      +  "email_verify",
      +  "robots_txt",
      +  "redirect_chain",
      +  "brand_assets",
      +  "seo_audit",
      +  "phone_lookup",
      +  "username_lookup",
      +  "password_check",
      +  "phishing_check",
      +  "atlas_technique_lookup",
      +  "atlas_technique_search",
      +  "bulk_atlas_technique_lookup",
      +  "atlas_case_study_lookup",
      +  "atlas_case_study_search",
      +  "d3fend_defense_lookup",
      +  "d3fend_defense_search",
      +  "d3fend_defense_for_attack",
      +  "d3fend_attack_coverage",
      +  "sigma_rule_lookup",
      +  "bulk_sigma_rule_lookup"
      +]
  8. Changed1 schema field changed
    • changedOutput schema / $defs / PivotHint / properties / tool / enum
      Previous value: -[
      -  "cve_lookup",
      -  "cve_search",
      -  "cve_leading",
      -  "bulk_cve_lookup",
      -  "calculate_risk_score",
      -  "get_cvss_details",
      -  "exploit_lookup",
      -  "kev_detail",
      -  "cwe_lookup",
      -  "subdomain_enum",
      -  "ssl_check",
      -  "tech_fingerprint",
      -  "asn_lookup",
      -  "ip_lookup",
      -  "ioc_lookup",
      -  "bulk_ioc_lookup",
      -  "hash_lookup",
      -  "threat_intel",
      -  "threat_report",
      -  "audit_domain",
      -  "domain_report",
      -  "dns_lookup",
      -  "whois_lookup",
      -  "wayback_lookup",
      -  "scan_headers",
      -  "check_headers",
      -  "check_secrets",
      -  "check_injection",
      -  "check_dependencies",
      -  "email_mx",
      -  "email_disposable",
      -  "email_verify",
      -  "robots_txt",
      -  "redirect_chain",
      -  "brand_assets",
      -  "seo_audit",
      -  "phone_lookup",
      -  "username_lookup",
      -  "password_check",
      -  "phishing_check",
      -  "atlas_technique_lookup",
      -  "atlas_technique_search",
      -  "bulk_atlas_technique_lookup",
      -  "atlas_case_study_lookup",
      -  "atlas_case_study_search",
      -  "d3fend_defense_lookup",
      -  "d3fend_defense_search",
      -  "d3fend_defense_for_attack",
      -  "d3fend_attack_coverage"
      -]New value: +[
      +  "cve_lookup",
      +  "cve_search",
      +  "cve_leading",
      +  "bulk_cve_lookup",
      +  "calculate_risk_score",
      +  "get_cvss_details",
      +  "exploit_lookup",
      +  "kev_detail",
      +  "cwe_lookup",
      +  "subdomain_enum",
      +  "ssl_check",
      +  "tech_fingerprint",
      +  "asn_lookup",
      +  "ip_lookup",
      +  "ioc_lookup",
      +  "bulk_ioc_lookup",
      +  "hash_lookup",
      +  "threat_intel",
      +  "threat_report",
      +  "audit_domain",
      +  "domain_report",
      +  "dns_lookup",
      +  "whois_lookup",
      +  "wayback_lookup",
      +  "scan_headers",
      +  "check_headers",
      +  "check_secrets",
      +  "check_injection",
      +  "check_dependencies",
      +  "email_mx",
      +  "email_security_posture",
      +  "email_disposable",
      +  "email_verify",
      +  "robots_txt",
      +  "redirect_chain",
      +  "brand_assets",
      +  "seo_audit",
      +  "phone_lookup",
      +  "username_lookup",
      +  "password_check",
      +  "phishing_check",
      +  "atlas_technique_lookup",
      +  "atlas_technique_search",
      +  "bulk_atlas_technique_lookup",
      +  "atlas_case_study_lookup",
      +  "atlas_case_study_search",
      +  "d3fend_defense_lookup",
      +  "d3fend_defense_search",
      +  "d3fend_defense_for_attack",
      +  "d3fend_attack_coverage"
      +]
  9. Changed1 schema field changed
    • changedOutput schema / $defs / PivotHint / properties / tool / enum
      Previous value: -[
      -  "cve_lookup",
      -  "cve_search",
      -  "cve_leading",
      -  "bulk_cve_lookup",
      -  "exploit_lookup",
      -  "kev_detail",
      -  "cwe_lookup",
      -  "subdomain_enum",
      -  "ssl_check",
      -  "tech_fingerprint",
      -  "asn_lookup",
      -  "ip_lookup",
      -  "ioc_lookup",
      -  "bulk_ioc_lookup",
      -  "hash_lookup",
      -  "threat_intel",
      -  "threat_report",
      -  "audit_domain",
      -  "domain_report",
      -  "dns_lookup",
      -  "whois_lookup",
      -  "wayback_lookup",
      -  "scan_headers",
      -  "check_headers",
      -  "check_secrets",
      -  "check_injection",
      -  "check_dependencies",
      -  "email_mx",
      -  "email_disposable",
      -  "email_verify",
      -  "robots_txt",
      -  "redirect_chain",
      -  "brand_assets",
      -  "seo_audit",
      -  "phone_lookup",
      -  "username_lookup",
      -  "password_check",
      -  "phishing_check",
      -  "atlas_technique_lookup",
      -  "atlas_technique_search",
      -  "bulk_atlas_technique_lookup",
      -  "atlas_case_study_lookup",
      -  "atlas_case_study_search",
      -  "d3fend_defense_lookup",
      -  "d3fend_defense_search",
      -  "d3fend_defense_for_attack",
      -  "d3fend_attack_coverage"
      -]New value: +[
      +  "cve_lookup",
      +  "cve_search",
      +  "cve_leading",
      +  "bulk_cve_lookup",
      +  "calculate_risk_score",
      +  "get_cvss_details",
      +  "exploit_lookup",
      +  "kev_detail",
      +  "cwe_lookup",
      +  "subdomain_enum",
      +  "ssl_check",
      +  "tech_fingerprint",
      +  "asn_lookup",
      +  "ip_lookup",
      +  "ioc_lookup",
      +  "bulk_ioc_lookup",
      +  "hash_lookup",
      +  "threat_intel",
      +  "threat_report",
      +  "audit_domain",
      +  "domain_report",
      +  "dns_lookup",
      +  "whois_lookup",
      +  "wayback_lookup",
      +  "scan_headers",
      +  "check_headers",
      +  "check_secrets",
      +  "check_injection",
      +  "check_dependencies",
      +  "email_mx",
      +  "email_disposable",
      +  "email_verify",
      +  "robots_txt",
      +  "redirect_chain",
      +  "brand_assets",
      +  "seo_audit",
      +  "phone_lookup",
      +  "username_lookup",
      +  "password_check",
      +  "phishing_check",
      +  "atlas_technique_lookup",
      +  "atlas_technique_search",
      +  "bulk_atlas_technique_lookup",
      +  "atlas_case_study_lookup",
      +  "atlas_case_study_search",
      +  "d3fend_defense_lookup",
      +  "d3fend_defense_search",
      +  "d3fend_defense_for_attack",
      +  "d3fend_attack_coverage"
      +]
  10. Changed1 schema field changed
    • changedOutput schema / $defs / PivotHint / properties / tool / enum
      Previous value: -[
      -  "cve_lookup",
      -  "cve_search",
      -  "cve_leading",
      -  "bulk_cve_lookup",
      -  "exploit_lookup",
      -  "kev_detail",
      -  "cwe_lookup",
      -  "subdomain_enum",
      -  "ssl_check",
      -  "tech_fingerprint",
      -  "asn_lookup",
      -  "ip_lookup",
      -  "ioc_lookup",
      -  "bulk_ioc_lookup",
      -  "hash_lookup",
      -  "threat_intel",
      -  "threat_report",
      -  "audit_domain",
      -  "domain_report",
      -  "dns_lookup",
      -  "whois_lookup",
      -  "wayback_lookup",
      -  "scan_headers",
      -  "check_headers",
      -  "check_secrets",
      -  "check_injection",
      -  "check_dependencies",
      -  "email_mx",
      -  "email_disposable",
      -  "phone_lookup",
      -  "username_lookup",
      -  "password_check",
      -  "phishing_check",
      -  "atlas_technique_lookup",
      -  "atlas_technique_search",
      -  "bulk_atlas_technique_lookup",
      -  "atlas_case_study_lookup",
      -  "atlas_case_study_search",
      -  "d3fend_defense_lookup",
      -  "d3fend_defense_search",
      -  "d3fend_defense_for_attack",
      -  "d3fend_attack_coverage"
      -]New value: +[
      +  "cve_lookup",
      +  "cve_search",
      +  "cve_leading",
      +  "bulk_cve_lookup",
      +  "exploit_lookup",
      +  "kev_detail",
      +  "cwe_lookup",
      +  "subdomain_enum",
      +  "ssl_check",
      +  "tech_fingerprint",
      +  "asn_lookup",
      +  "ip_lookup",
      +  "ioc_lookup",
      +  "bulk_ioc_lookup",
      +  "hash_lookup",
      +  "threat_intel",
      +  "threat_report",
      +  "audit_domain",
      +  "domain_report",
      +  "dns_lookup",
      +  "whois_lookup",
      +  "wayback_lookup",
      +  "scan_headers",
      +  "check_headers",
      +  "check_secrets",
      +  "check_injection",
      +  "check_dependencies",
      +  "email_mx",
      +  "email_disposable",
      +  "email_verify",
      +  "robots_txt",
      +  "redirect_chain",
      +  "brand_assets",
      +  "seo_audit",
      +  "phone_lookup",
      +  "username_lookup",
      +  "password_check",
      +  "phishing_check",
      +  "atlas_technique_lookup",
      +  "atlas_technique_search",
      +  "bulk_atlas_technique_lookup",
      +  "atlas_case_study_lookup",
      +  "atlas_case_study_search",
      +  "d3fend_defense_lookup",
      +  "d3fend_defense_search",
      +  "d3fend_defense_for_attack",
      +  "d3fend_attack_coverage"
      +]
  11. Changed3 schema fields changed
    • addedOutput schema / $defs
      Added value: +{
      +  "EmailMxResponse": {
      +    "properties": {
      +      "domain": {
      +        "title": "Domain",
      +        "type": "string"
      +      },
      +      "email_security": {
      +        "$ref": "#/$defs/EmailSecurityDetail"
      +      },
      +      "mail_provider": {
      +        "anyOf": [
      +          {
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "title": "Mail Provider"
      +      },
      +      "mx_records": {
      +        "items": {
      +          "$ref": "#/$defs/MxRecord"
      +        },
      +        "title": "Mx Records",
      +        "type": "array"
      +      },
      +      "next_calls": {
      +        "anyOf": [
      +          {
      +            "items": {
      +              "$ref": "#/$defs/PivotHint"
      +            },
      +            "type": "array"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "Suggested follow-up MCP tool calls. Ordered by relevance; agents should chain these without re-prompting the user.",
      +        "title": "Next Calls"
      +      },
      +      "summary": {
      +        "default": "",
      +        "title": "Summary",
      +        "type": "string"
      +      },
      +      "verdict": {
      +        "anyOf": [
      +          {
      +            "$ref": "#/$defs/Verdict"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "Falsifiability metadata: sources_queried, sources_unavailable, completeness, deterministic flag. Lets agents distinguish 'no data' from 'source failed' without re-running the call."
      +      }
      +    },
      +    "required": [
      +      "domain"
      +    ],
      +    "title": "EmailMxResponse",
      +    "type": "object"
      +  },
      +  "EmailSecurityDetail": {
      +    "properties": {
      +      "dkim_selectors": {
      +        "items": {
      +          "type": "string"
      +        },
      +        "title": "Dkim Selectors",
      +        "type": "array"
      +      },
      +      "dkim_status": {
      +        "anyOf": [
      +          {
      +            "enum": [
      +              "verified",
      +              "unverifiable"
      +            ],
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "'verified' when at least one DKIM selector responded; 'unverifiable' when none of the probed common/date-based selectors matched. Custom selectors cannot be discovered without prior knowledge.",
      +        "title": "Dkim Status"
      +      },
      +      "dmarc": {
      +        "anyOf": [
      +          {
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "title": "Dmarc"
      +      },
      +      "grade": {
      +        "default": "F",
      +        "title": "Grade",
      +        "type": "string"
      +      },
      +      "issues": {
      +        "items": {
      +          "type": "string"
      +        },
      +        "title": "Issues",
      +        "type": "array"
      +      },
      +      "spf": {
      +        "anyOf": [
      +          {
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "title": "Spf"
      +      }
      +    },
      +    "title": "EmailSecurityDetail",
      +    "type": "object"
      +  },
      +  "ErrorDetail": {
      +    "description": "Structured failure body. Codes mirror app/exceptions.AppException\nsubclasses; agent retry / upgrade decisions key off `code`, not `message`.",
      +    "properties": {
      +      "code": {
      +        "description": "Stable machine-readable failure category. Agents key retry/upgrade decisions off this.",
      +        "enum": [
      +          "invalid_argument",
      +          "not_found",
      +          "rate_limit_exceeded",
      +          "auth_required",
      +          "tier_limit",
      +          "upstream_timeout",
      +          "upstream_error",
      +          "internal_error"
      +        ],
      +        "title": "Code",
      +        "type": "string"
      +      },
      +      "docs_url": {
      +        "anyOf": [
      +          {
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "Documentation pointer (e.g. tool input contract) when code='invalid_argument'.",
      +        "title": "Docs Url"
      +      },
      +      "message": {
      +        "description": "Human-readable detail. Free text — never parse. Capped at 500 chars to prevent oversized upstream errors from bloating responses.",
      +        "maxLength": 500,
      +        "title": "Message",
      +        "type": "string"
      +      },
      +      "retry_after_seconds": {
      +        "anyOf": [
      +          {
      +            "type": "integer"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "When code='rate_limit_exceeded', the minimum seconds to wait before retrying.",
      +        "title": "Retry After Seconds"
      +      },
      +      "upgrade_url": {
      +        "anyOf": [
      +          {
      +            "type": "string"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "Pricing/upgrade URL when code='tier_limit' or 'rate_limit_exceeded' on the Free tier.",
      +        "title": "Upgrade Url"
      +      }
      +    },
      +    "required": [
      +      "code",
      +      "message"
      +    ],
      +    "title": "ErrorDetail",
      +    "type": "object"
      +  },
      +  "ErrorResponse": {
      +    "description": "MCP error envelope. Tool return type is always\n`SpecificResponse | ErrorResponse` — Union flag tells the agent which arm\narrived without parsing the inner body.",
      +    "properties": {
      +      "error": {
      +        "$ref": "#/$defs/ErrorDetail"
      +      }
      +    },
      +    "required": [
      +      "error"
      +    ],
      +    "title": "ErrorResponse",
      +    "type": "object"
      +  },
      +  "MxRecord": {
      +    "properties": {
      +      "host": {
      +        "title": "Host",
      +        "type": "string"
      +      },
      +      "priority": {
      +        "title": "Priority",
      +        "type": "integer"
      +      }
      +    },
      +    "required": [
      +      "priority",
      +      "host"
      +    ],
      +    "title": "MxRecord",
      +    "type": "object"
      +  },
      +  "PivotHint": {
      +    "additionalProperties": true,
      +    "description": "A suggested follow-up MCP tool call. Surfaced inside response.next_calls so\nLLM agents can chain related lookups without manual prompting. Each hint names\nthe tool, the input value to pass, and a short reason explaining why this\npivot adds value in the current context.",
      +    "properties": {
      +      "input": {
      +        "description": "Suggested input value to pass to the tool — typically a CVE ID, CWE ID, domain, or IP. Pre-populated from the current response so the agent can call the next tool without re-deriving the argument.",
      +        "title": "Input",
      +        "type": "string"
      +      },
      +      "params": {
      +        "anyOf": [
      +          {
      +            "additionalProperties": {
      +              "type": "string"
      +            },
      +            "type": "object"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "Optional extra kwargs to pass alongside `input`. Used by pivot generators when the next call benefits from a secondary parameter, e.g. {'exclude_id': 'AML.T0051'} to skip the originating technique from a sibling-tactic search. Omitted when no extra args are needed.",
      +        "title": "Params"
      +      },
      +      "reason": {
      +        "description": "Short rationale (one sentence) for why this follow-up call adds value, e.g. 'Federal patch deadline + ransomware association', 'Public exploits / PoC availability'.",
      +        "title": "Reason",
      +        "type": "string"
      +      },
      +      "tool": {
      +        "description": "Canonical MCP tool name to call next. Constrained to known operation_ids in tools/list — adding a new tool here requires expanding the Literal.",
      +        "enum": [
      +          "cve_lookup",
      +          "cve_search",
      +          "cve_leading",
      +          "bulk_cve_lookup",
      +          "exploit_lookup",
      +          "kev_detail",
      +          "cwe_lookup",
      +          "subdomain_enum",
      +          "ssl_check",
      +          "tech_fingerprint",
      +          "asn_lookup",
      +          "ip_lookup",
      +          "ioc_lookup",
      +          "bulk_ioc_lookup",
      +          "hash_lookup",
      +          "threat_intel",
      +          "threat_report",
      +          "audit_domain",
      +          "domain_report",
      +          "dns_lookup",
      +          "whois_lookup",
      +          "wayback_lookup",
      +          "scan_headers",
      +          "check_headers",
      +          "check_secrets",
      +          "check_injection",
      +          "check_dependencies",
      +          "email_mx",
      +          "email_disposable",
      +          "phone_lookup",
      +          "username_lookup",
      +          "password_check",
      +          "phishing_check",
      +          "atlas_technique_lookup",
      +          "atlas_technique_search",
      +          "bulk_atlas_technique_lookup",
      +          "atlas_case_study_lookup",
      +          "atlas_case_study_search",
      +          "d3fend_defense_lookup",
      +          "d3fend_defense_search",
      +          "d3fend_defense_for_attack",
      +          "d3fend_attack_coverage"
      +        ],
      +        "title": "Tool",
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "tool",
      +      "input",
      +      "reason"
      +    ],
      +    "title": "PivotHint",
      +    "type": "object"
      +  },
      +  "Verdict": {
      +    "properties": {
      +      "completeness": {
      +        "default": "complete",
      +        "description": "'complete' = every planned source returned data; 'partial' = at least one source in sources_unavailable failed or was skipped; 'minimal' = only the primary/required source returned, optional enrichment missing.",
      +        "enum": [
      +          "complete",
      +          "partial",
      +          "minimal"
      +        ],
      +        "title": "Completeness",
      +        "type": "string"
      +      },
      +      "data_age_seconds": {
      +        "anyOf": [
      +          {
      +            "type": "integer"
      +          },
      +          {
      +            "type": "null"
      +          }
      +        ],
      +        "default": null,
      +        "description": "Seconds elapsed since the oldest cached source was fetched, or null when every source was queried live for this request. Use to judge freshness.",
      +        "title": "Data Age Seconds"
      +      },
      +      "deterministic": {
      +        "description": "True when the response is fully reproducible from the listed sources for the same input at the same moment (no randomness, no model inference). False for endpoints that include probabilistic scoring or LLM output.",
      +        "title": "Deterministic",
      +        "type": "boolean"
      +      },
      +      "falsifiable_fields": {
      +        "description": "Top-level response fields whose values a caller can independently re-derive from the named upstream sources (e.g. 'dns', 'ssl', 'whois'). Fields not in this list are derived/computed and cannot be directly re-verified.",
      +        "items": {
      +          "type": "string"
      +        },
      +        "title": "Falsifiable Fields",
      +        "type": "array"
      +      },
      +      "sources_queried": {
      +        "description": "Canonical source identifiers successfully consulted for this response (e.g. 'ripe_stat', 'shodan_internetdb', 'firehol'). Agent-readable list, order not significant.",
      +        "items": {
      +          "type": "string"
      +        },
      +        "title": "Sources Queried",
      +        "type": "array"
      +      },
      +      "sources_unavailable": {
      +        "description": "Sources that were expected but not returned — either intentionally skipped (lite mode, tier gating) or failed (quota, timeout, upstream down). Empty list means every planned source produced data.",
      +        "items": {
      +          "type": "string"
      +        },
      +        "title": "Sources Unavailable",
      +        "type": "array"
      +      }
      +    },
      +    "required": [
      +      "deterministic"
      +    ],
      +    "title": "Verdict",
      +    "type": "object"
      +  }
      +}
    • addedOutput schema / properties / result / anyOf
      Added value: +[
      +  {
      +    "$ref": "#/$defs/EmailMxResponse"
      +  },
      +  {
      +    "$ref": "#/$defs/ErrorResponse"
      +  }
      +]
    • removedOutput schema / properties / result / type
      Removed value: -"string"
  12. First observed

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Goes far beyond the read-only annotation by explaining the honest DKIM evidence policy (verified only if a selector responds, else unverifiable), the grading logic's dependence on DKIM verifiability, and that DKIM absence is not penalized. This prevents misinterpretation of results. Rate limits are also disclosed.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is dense and front-loaded with the core purpose, then adds necessary detail on DKIM semantics, grading rules, and return structure. It is somewhat long but every sentence carries distinct value; the semicolon-separated lists keep it readable. Not overly verbose for the complexity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers the return object shape, the DKIM evidence edge case, the grading algorithm in detail, rate limits, and directs to a more comprehensive sibling. With an output schema present, the description still adds substantial context, making the tool fully self-contained for an agent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The single parameter 'domain' is already fully described in the schema with examples. The description adds no new parameter syntax or constraints, so baseline 3 is appropriate given 100% schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific action ('Analyze email security') followed by the exact resources analyzed (MX, SPF, DMARC, DKIM, provider, grade). It names sibling tool domain_report to draw the boundary, making its purpose unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly states when to use it ('verify email-auth setup and phishing risk') and directs users to domain_report for a full audit. Also includes rate-limit context, helping agents decide whether to call it under resource constraints.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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TDQS

A4.5/5.0
Disambiguation4/5

Most tools have clearly distinct purposes, with differences between lookup/search/scan/audit for each domain. However, some overlap exists (e.g., email_mx vs email_security_posture, scan_headers vs contrast_scan) which could cause occasional confusion. Overall, boundaries are well-defined.

Naming Consistency5/5

Tool names follow a consistent verb_noun pattern (e.g., cve_lookup, check_headers, bulk_cve_lookup) with all lowercase underscores. Variations like kev_detail or ssl_check are minor and still predictable. No chaotic mixing of conventions.

Tool Count4/5

54 tools is high but justified by the broad cybersecurity scope (CVE, ATLAS, D3FEND, Sigma, domain, email, IOC, scanning). Some redundancy exists (e.g., three email-related tools), but the count is not excessive given the API's comprehensive feature set.

Completeness5/5

The tool set thoroughly covers the threat intelligence and domain investigation lifecycle: CVE/KEV/exploit/CWE, ATLAS/D3FEND/Sigma, DNS/WHOIS/SSL/subdomains, email security, IOC enrichment, and active scanning. No significant gaps are apparent for the stated cybersecurity purpose.