ContrastAPI

Calculate Risk Score

calculate_risk_score

Read-onlyIdempotent

Composite CVE risk score (0-100) — fuses CVSS, EPSS, KEV, and PoC into a single agent-ready triage signal. Formula: CVSS0.20 + EPSS0.35 + KEV0.30 + PoC0.15 (each component rescaled to 0-100 before weighting). Multiplicative boosters applied in order: KEV+PoC combo (*1.15), critical-severity-with-high-EPSS (CVSS>=9 AND EPSS>0.7, *1.10), recently published (within last 7 days, *1.05). Final score clamped to [0, 100]. Label bands: CRITICAL>=90, HIGH>=70, MEDIUM>=40, LOW<40. Urgency text encodes patch SLA (immediate when KEV; 24h/72h/30d by label). Use to triage a single CVE without orchestrating cve_lookup + exploit_lookup separately. PoC signal here is the local ExploitDB mirror only — for full multi-source exploit detail (GitHub Advisory + Shodan refs + ExploitDB), call exploit_lookup separately. Methodology adapted from mukul975/cve-mcp-server (Apache-2.0): https://github.com/mukul975/cve-mcp-server. Free: 30/hr, Pro: 500/hr. Returns {cve_id, score (0-100), label (CRITICAL/HIGH/MEDIUM/LOW), urgency, has_public_poc, components (cvss_v3, epss_score, in_kev, has_public_poc, weighted_breakdown), boosters_applied, recommendation, summary, verdict, next_calls}.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`cve_id`	Yes	CVE identifier in format CVE-YYYY-NNNNN (e.g. 'CVE-2021-44228', 'CVE-2024-3094')

Output Schema

TableJSON Schema

Name	Required	Description	Default
`result`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedJun 2, 2026
- 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"
+]
```
Changed1 schema field changedMay 25, 2026
- changedOutput schema / properties / result / properties / next_calls / type
```
Previous value: -"object"New value: +"array"
```

Changed1 schema field changedMay 22, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "result": {
+      "properties": {
+        "boosters_applied": {
+          "type": "array"
+        },
+        "components": {
+          "type": "object"
+        },
+        "cve_id": {
+          "type": "string"
+        },
+        "has_public_poc": {
+          "type": "boolean"
+        },
+        "label": {
+          "type": "string"
+        },
+        "next_calls": {
+          "type": "object"
+        },
+        "recommendation": {
+          "type": "string"
+        },
+        "score": {
+          "type": "number"
+        },
+        "summary": {
+          "type": "string"
+        },
+        "urgency": {
+          "type": "string"
+        },
+        "verdict": {
+          "type": "object"
+        }
+      },
+      "required": [
+        "cve_id",
+        "score",
+        "label",
+        "urgency",
+        "has_public_poc",
+        "components",
+        "recommendation",
+        "summary"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "result"
+  ],
+  "type": "object"
+}

Changed1 schema field changedMay 22, 2026

changedOutput schema / (root)

Previous value: -{
-  "$defs": {
-    "ErrorDetail": {
-      "properties": {
-        "code": {
-          "enum": [
-            "invalid_argument",
-            "not_found",
-            "rate_limit_exceeded",
-            "auth_required",
-            "tier_limit",
-            "upstream_timeout",
-            "upstream_error",
-            "internal_error"
-          ],
-          "type": "string"
-        },
-        "docs_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "message": {
-          "maxLength": 500,
-          "type": "string"
-        },
-        "retry_after_seconds": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "upgrade_url": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "required": [
-        "code",
-        "message"
-      ],
-      "type": "object"
-    },
-    "ErrorResponse": {
-      "properties": {
-        "error": {
-          "$ref": "#/$defs/ErrorDetail"
-        }
-      },
-      "required": [
-        "error"
-      ],
-      "type": "object"
-    },
-    "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"
-    },
-    "RiskScoreResponse": {
-      "properties": {
-        "boosters_applied": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "components": {
-          "additionalProperties": true,
-          "type": "object"
-        },
-        "cve_id": {
-          "type": "string"
-        },
-        "has_public_poc": {
-          "type": "boolean"
-        },
-        "label": {
-          "enum": [
-            "CRITICAL",
-            "HIGH",
-            "MEDIUM",
-            "LOW"
-          ],
-          "type": "string"
-        },
-        "next_calls": {
-          "anyOf": [
-            {
-              "items": {
-                "$ref": "#/$defs/PivotHint"
-              },
-              "type": "array"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "recommendation": {
-          "type": "string"
-        },
-        "score": {
-          "type": "number"
-        },
-        "summary": {
-          "type": "string"
-        },
-        "urgency": {
-          "type": "string"
-        },
-        "verdict": {
-          "anyOf": [
-            {
-              "$ref": "#/$defs/Verdict"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        }
-      },
-      "required": [
-        "cve_id",
-        "score",
-        "label",
-        "urgency",
-        "has_public_poc",
-        "components",
-        "recommendation",
-        "summary"
-      ],
-      "type": "object"
-    },
-    "Verdict": {
-      "properties": {
-        "completeness": {
-          "enum": [
-            "complete",
-            "partial",
-            "minimal"
-          ],
-          "type": "string"
-        },
-        "data_age_seconds": {
-          "anyOf": [
-            {
-              "type": "integer"
-            },
-            {
-              "type": "null"
-            }
-          ]
-        },
-        "deterministic": {
-          "type": "boolean"
-        },
-        "falsifiable_fields": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "sources_queried": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "sources_unavailable": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        }
-      },
-      "required": [
-        "deterministic"
-      ],
-      "type": "object"
-    }
-  },
-  "properties": {
-    "result": {
-      "anyOf": [
-        {
-          "$ref": "#/$defs/RiskScoreResponse"
-        },
-        {
-          "$ref": "#/$defs/ErrorResponse"
-        }
-      ]
-    }
-  },
-  "required": [
-    "result"
-  ],
-  "type": "object"
-}New value: +null

Changed70 schema fields changedMay 17, 2026

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 / 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 / RiskScoreResponse / description

Removed value: -"Composite CVE risk score (CVSS / EPSS / KEV / PoC fusion)."

removedOutput schema / $defs / RiskScoreResponse / properties / boosters_applied / description

Removed value: -"Multiplicative boosters applied: kev_with_public_poc (*1.15), critical_severity_high_epss (*1.10), published_within_7_days (*1.05)."

removedOutput schema / $defs / RiskScoreResponse / properties / boosters_applied / title
```
Removed value: -"Boosters Applied"
```

removedOutput schema / $defs / RiskScoreResponse / properties / components / description

Removed value: -"Inputs that fed the score: cvss_v3, epss_score, in_kev, has_public_poc, weighted_breakdown ({cvss, epss, kev, poc} each scaled 0-100 * weight)."

removedOutput schema / $defs / RiskScoreResponse / properties / components / title
```
Removed value: -"Components"
```
removedOutput schema / $defs / RiskScoreResponse / properties / cve_id / description
```
Removed value: -"Canonical CVE identifier, e.g. 'CVE-2021-44228'."
```
removedOutput schema / $defs / RiskScoreResponse / properties / cve_id / title
```
Removed value: -"Cve Id"
```
removedOutput schema / $defs / RiskScoreResponse / properties / has_public_poc / description
```
Removed value: -"True when a public PoC is available (ExploitDB local mirror)."
```
removedOutput schema / $defs / RiskScoreResponse / properties / has_public_poc / title
```
Removed value: -"Has Public Poc"
```

removedOutput schema / $defs / RiskScoreResponse / properties / label / description

Removed value: -"Risk band derived from score (CRIT≥90, HIGH≥70, MED≥40, LOW<40)."

removedOutput schema / $defs / RiskScoreResponse / properties / label / title
```
Removed value: -"Label"
```
removedOutput schema / $defs / RiskScoreResponse / properties / next_calls / default
```
Removed value: -null
```

removedOutput schema / $defs / RiskScoreResponse / 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 / RiskScoreResponse / properties / next_calls / title
```
Removed value: -"Next Calls"
```
removedOutput schema / $defs / RiskScoreResponse / properties / recommendation / description
```
Removed value: -"One-sentence remediation guidance."
```
removedOutput schema / $defs / RiskScoreResponse / properties / recommendation / title
```
Removed value: -"Recommendation"
```
removedOutput schema / $defs / RiskScoreResponse / properties / score / description
```
Removed value: -"Composite risk score in 0.0-100.0. Higher = more urgent."
```
removedOutput schema / $defs / RiskScoreResponse / properties / score / title
```
Removed value: -"Score"
```
removedOutput schema / $defs / RiskScoreResponse / properties / summary / description
```
Removed value: -"One-line agent-friendly summary of the verdict."
```
removedOutput schema / $defs / RiskScoreResponse / properties / summary / title
```
Removed value: -"Summary"
```
removedOutput schema / $defs / RiskScoreResponse / properties / urgency / description
```
Removed value: -"Human-readable patch urgency (e.g. 'Patch within 24 hours')."
```
removedOutput schema / $defs / RiskScoreResponse / properties / urgency / title
```
Removed value: -"Urgency"
```
removedOutput schema / $defs / RiskScoreResponse / properties / verdict / default
```
Removed value: -null
```

removedOutput schema / $defs / RiskScoreResponse / 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 / RiskScoreResponse / title
```
Removed value: -"RiskScoreResponse"
```
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: -"calculate_risk_scoreOutput"

Changed1 schema field changedMay 15, 2026

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"
+]

Changed1 schema field changedMay 12, 2026

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"
+]

Changed1 schema field changedMay 12, 2026

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"
+]

AddedMay 8, 2026

TDQS

A4.7/5.0

Behavior5/5

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

Annotations already mark readOnly, idempotent, and non-destructive; the description adds the scoring formula, multiplicative boosters, clamping to [0,100], label bands, urgency/SLA mapping, rate limits, and the limitation that PoC comes only from the local ExploitDB mirror. This goes far beyond what annotations provide and gives the agent a clear understanding of behavior.

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

Conciseness5/5

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

The description is long but every sentence serves a purpose: formula, boosters, labels, urgency, usage guidance, limitation, attribution, rate limits, and return object fields. It is structured from high-level purpose down to details, with no filler and a clear hierarchy.

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?

For a composite risk-scoring tool with one input, the description covers the algorithm, edge-case boosters, output bands, urgency policy, rate limits, and scope limitations. An output schema exists, and the description still previews key return fields. This is fully sufficient for an agent to select and invoke the tool correctly.

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 input schema has a single parameter cve_id with 100% description coverage, including format and example. The description does not add new semantic meaning for the parameter beyond clarifying the tool consumes a single CVE ID, which is already evident from the schema. Baseline 3 applies because the schema fully documents the parameter.

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?

Description states 'Composite CVE risk score (0-100) — fuses CVSS, EPSS, KEV, and PoC into a single agent-ready triage signal.' It clearly identifies the tool's function and differentiates from siblings by noting it avoids orchestrating cve_lookup + exploit_lookup separately, and explicitly contrasts with exploit_lookup for PoC detail.

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?

Explicit usage guidance: 'Use to triage a single CVE without orchestrating cve_lookup + exploit_lookup separately' and 'for full multi-source exploit detail... call exploit_lookup separately.' This states when to use the tool, what it is not for, and names the alternative.

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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