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

With no annotations, the description carries the full behavioral burden. It does disclose the response shape (allow/review/block with reasons) and hints at a pricing/tier model via 'Free sample,' which is useful context. It does not say whether the tool only analyzes supplied text or actually reaches the network, whether inputs are retained, or any rate limits on the free tier.

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

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

Two sentences, no padding, and the output contract is stated compactly at the end. 'Free sample.' is a slightly odd lead that delays the actual purpose, but it is brief enough not to harm usability.

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

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

For a 4-parameter analysis tool with no output schema and no annotations, the description covers the key facts: what it inspects, when to run it, and what verdicts it can return. It could be stronger on data handling and on routing versus the sibling tools, but nothing essential to calling it is missing.

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

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

Schema coverage is 100% and every parameter (name, tools, description, permissions) is documented in the schema itself, so the baseline is 3. The description adds no syntax or format detail beyond what the schema already provides; notably it never mentions the optional tools[] or permissions[] inputs.

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

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

States a specific verb (vet) and resource (an MCP server/skill/tool description) and enumerates what it inspects: poisoned descriptions, hidden orders, excessive permissions, look-alike names. It also names its output form (allow/review/block). It does not, however, distinguish itself from the similarly named siblings verdict_guard, verdict_firewall or verdict_command_gate, so the agent must guess which of the four handles this case.

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

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

Gives an explicit trigger point: 'Before installing an MCP server, skill or tool.' That is genuine when-to-use guidance. It stops short of saying when not to use it or which sibling to prefer for adjacent cases (e.g. runtime gating vs. pre-install vetting).

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