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aws-security-mcp

by jowhee327
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Hybrid

scan_public_access_verify

Run a read-only Public Access Verify scan to identify publicly accessible AWS resources and assess exposure risk. Supports AWS and Huawei Cloud regions.

Instructions

Run Public Access Verify security scanner only. Read-only. Does not modify any AWS resources.

Input Schema

TableJSON 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).

Schema Changelog

Changes observed during successful MCP inspections.

  1. 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"
+}
  2. First observedv0.7.6

TDQS

A4/5.0
Behavior4/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It explicitly states 'Read-only' and 'Does not modify any AWS resources,' which is valuable safety-relevant context for a scanner tool. It does not disclose auth requirements or output behavior, but for a safe read-only scan this is reasonable.

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 two short sentences with no filler. The primary purpose is front-loaded immediately, and the safety clarification follows without redundancy.

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 tool with only two optional parameters and full schema coverage, the description is mostly sufficient. It states the tool's scope and safety profile, though it does not mention what the scan returns or how it relates to grouped scan workflows. Given the low complexity, this is a minor gap.

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%, with both region and provider already well documented, including the huaweicloud nuance. The description itself adds no parameter-level information, so the baseline score of 3 is appropriate.

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 gives a specific verb ('Run'), a specific resource ('Public Access Verify security scanner'), and narrows scope with 'only', which clearly distinguishes it from the combined or report-generating siblings like scan_and_report and scan_all.

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?

The word 'only' implies this tool should not be used for broader scans or other scanner types, but the description does not explicitly state when to choose this versus alternatives such as scan_all or scan_group. Usage context is weakly implied rather than clearly specified.

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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