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

The annotations already communicate read-only, idempotent, and non-destructive behavior, and the description aligns with these. It adds useful context about the 'live gateway' origin and return content, but does not mention auth requirements or other behavioral nuances. No contradiction.

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?

The description is two focused sentences, starting with the action and resource. The second sentence adds valuable detail about return contents without any padding.

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 simple tool signature (one optional param, full schema coverage, and an output schema present), the description plus annotations sufficiently cover safety and return scope. No critical information 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?

The schema fully documents the single optional 'workspace' parameter (100% coverage), so the baseline is 3. The description does not add extra meaning beyond the schema's 'Workspace identifier' label.

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 a specific verb ('Retrieve') and clearly names the resource ('A2A interaction policies') plus the source ('live gateway'). It also lists the types of information returned, but it does not explicitly differentiate from sibling policy or audit tools.

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?

No explicit when-to-use or alternative guidance is provided. However, the focus on 'allowed actions, rate limits, cost caps, and approval requirements' implies the tool is for retrieving live policy details. There is no sibling comparison or exclusion, so it stops at implied usage.

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