MCP Operation Risk

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

Annotations already declare readOnly/idempotent/non-destructive, and the description is consistent with that. It adds real behavioral context beyond annotations: the ALLOW/DENY/REQUIRE_APPROVAL verdict set, schema-drift status, retry semantics, deterministic effect identity, and the x402 payment requirement. Auth/rate-limit detail is still thin.

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?

Four short sentences, front-loaded with the core purpose before the targeting condition and return values. No filler, though the return-value sentence slightly overlaps what the output schema already carries.

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?

The output schema covers return values, so re-listing them is not strictly needed. However, the schema takes zero inputs while the description describes an operation-level analysis service, and it never explains how an operation is identified or how the caller triggers an evaluation. That gap between an empty input schema and the described analysis behavior leaves an agent unsure how to actually use it.

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?

Zero parameters, so the baseline is 4. The description adds nothing parameter-related, but there is nothing to add; the empty schema is fully covered.

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 and resource: 'Analyzes operation-level risk inside consolidated MCP tools.' It also names the exact scenario it targets (one tool exposing multiple operations via command/action/method args). It is clear, though the name/title ('describe ... service') leans toward metadata-description while the body describes an analysis/verdict service, leaving a slight purpose ambiguity.

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?

Explicitly scopes when to use it: tools where a single MCP tool fronts multiple operations needing different policy outcomes. No alternatives are named, but none exist (no siblings). The when-to-use condition is clear; a when-not or explicit invocation trigger is absent.

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