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

No annotations are provided, so the description must carry the full behavioral burden, but it omits permissions, side effects, return shape, and whether the operation is read-only. The mention of a $0.01 x402 rail and POST /query adds some cost/transport context but not enough to characterize the tool's behavior.

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?

It is a single sentence and not bloated, but the jargon makes it hard to parse and the core purpose is not front-loaded. The x402 endpoint detail may not help an MCP agent select the tool.

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?

Given the opaque nested 'action' parameter, no annotations, and no output schema, the description is not complete enough for correct invocation. It gives some rail/cost context but leaves the action contract and return behavior unclear.

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?

The schema has one required 'action' object with 0% description coverage, and the description never explains what 'action' contains or what valid values look like. With low schema coverage, the description should compensate, but it provides no parameter semantics.

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?

The description uses internal jargon such as 'per-verdict query shape,' 'tier rail,' and 'x402 rail' instead of a clear verb+resource statement. It hints that the tool queries verdicts or scores, but does not plainly state what it returns or how it differs from siblings.

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?

The description gives no when-to-use guidance, prerequisites, or comparison to sibling tools like score_action or observe_result. The only routing information concerns transport rails, not when an agent should choose this MCP tool.

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