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aws-security-mcp

aws-security-mcp

by jowhee327
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Hybrid

scan_dns_dangling

Detect dangling DNS records that could enable subdomain hijacking. Runs read-only cloud scans without modifying AWS resources.

Instructions

Run Dangling DNS security scanner only. Read-only. Does not modify any AWS resources.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "scan_dns_dangling"
  }
}

Input Schema

NameRequiredDescriptionDefault
regionNoAWS region to scan (default: server region)
providerNoCloud provider to scan (default: aws). With huaweicloud, `region` is a Huawei Cloud region ID (e.g. cn-north-4); omit it or pass "all" to scan every region project of the account. Huawei Cloud Phase 1 is single-account (org_mode falls back to the current account with a warning). With alicloud (EXPERIMENTAL — not yet validated against a live account), region is an Alibaba Cloud region ID (e.g. cn-hangzhou); omit or "all" to scan every region; single-account only in this phase. With azure (EXPERIMENTAL — not yet validated against a live account), the China cloud (21Vianet) is the default; set AZURE_CLOUD=global for public cloud. region is an Azure subscription ID; omit or "all" to scan every visible subscription.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv0.10.0
    • changedInput schema / properties / provider / description
      Previous value: -"Cloud provider to scan (default: aws). With huaweicloud, `region` is a Huawei Cloud region ID (e.g. cn-north-4); omit it or pass \"all\" to scan every region project of the account. Huawei Cloud Phase 1 is single-account (org_mode falls back to the current account with a warning)."New value: +"Cloud provider to scan (default: aws). With huaweicloud, `region` is a Huawei Cloud region ID (e.g. cn-north-4); omit it or pass \"all\" to scan every region project of the account. Huawei Cloud Phase 1 is single-account (org_mode falls back to the current account with a warning). With alicloud (EXPERIMENTAL — not yet validated against a live account), region is an Alibaba Cloud region ID (e.g. cn-hangzhou); omit or \"all\" to scan every region; single-account only in this phase. With azure (EXPERIMENTAL — not yet validated against a live account), the China cloud (21Vianet) is the default; set AZURE_CLOUD=global for public cloud. region is an Azure subscription ID; omit or \"all\" to scan every visible subscription."
    • changedInput schema / properties / provider / enum
      Previous value: -[
-  "aws",
-  "huaweicloud"
-]New value: +[
+  "aws",
+  "huaweicloud",
+  "alicloud",
+  "azure"
+]
  2. Changed1 schema field changedv0.9.0
    • addedInput schema / properties / provider
      Added value: +{
+  "description": "Cloud provider to scan (default: aws). With huaweicloud, `region` is a Huawei Cloud region ID (e.g. cn-north-4); omit it or pass \"all\" to scan every region project of the account. Huawei Cloud Phase 1 is single-account (org_mode falls back to the current account with a warning).",
+  "enum": [
+    "aws",
+    "huaweicloud"
+  ],
+  "type": "string"
+}
  3. First observedv0.7.6

TDQS

A3.5/5.0
Behavior3/5

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

No annotations are supplied, so the description carries the full behavioral burden. It does disclose the important safety trait (read-only, no AWS resource modification), which is genuinely useful, but says nothing about required credentials/permissions, multi-cloud side effects, or what the scan produces.

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?

Three short sentences with the tool's identity and safety posture front-loaded; nothing is padded or redundant. It is arguably over-terse rather than over-long.

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

Completeness4/5

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

For a zero-required-parameter scan with no output schema and fully documented inputs, the remaining need is scope and safety, both of which are covered. Missing is any hint about output or when to prefer a composite scan, but the definition is sufficient to invoke 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?

Schema description coverage is 100%, and the provider enum is documented in exceptional detail (region-ID semantics per cloud, experimental status, org_mode fallback). The description adds nothing beyond the schema, so the baseline 3 applies.

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

Purpose4/5

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

The description names a specific verb ("Run") and resource ("Dangling DNS security scanner"), and the word "only" signals it is a scoped single-check tool rather than a broad scan. It is distinguishable from siblings like scan_all or scan_group, though it never names those alternatives explicitly.

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

Usage Guidelines3/5

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

"Only" implies the tool should be selected when the agent wants just this check rather than a composite scan, but it never states that condition or points to scan_group/scan_all/scan_and_report as the alternatives. Usage is inferable rather than stated.

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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