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CSOAI-ORG

MEOK MCP Hardening MCP

audit_server_json

Audits an MCP server JSON against OWASP LLM Top 10 and MCP-specific risks. Returns a hardening score and HMAC-signed report.

Instructions

Full OWASP LLM Top 10 + MCP-specific security audit of an MCP server.json.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
server_jsonYes
Behavior2/5

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

No annotations provided, so the description must cover behavioral traits. It states 'audit' (suggesting read-only) but does not confirm idempotency, auth requirements, or potential side effects. No details on return format or pagination.

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?

Single sentence, no wasted words. However, extreme brevity borders on under-specification, but conciseness itself is good.

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

Completeness1/5

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

For a tool performing a complex security audit with one richly structured input and no output schema, the description is woefully incomplete. It does not explain what the input should contain, what the output includes, or any actionable details.

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

Parameters1/5

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

The input schema has 0% description coverage (no parameter descriptions). The tool description adds no meaning beyond repeating the parameter name 'server_json'. The agent has no clue about required structure or constraints.

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 clearly states the specific scope: 'Full OWASP LLM Top 10 + MCP-specific security audit of an MCP server.json.' It distinguishes from siblings like audit_tool_description by specifying the audit framework and context.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives like check_destructive_surface or list_owasp_findings. The agent is left to infer from the name alone.

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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