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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds context about the return contents (sources, validation, review status, limitations), but does not disclose deeper behavioral traits like pagination, errors, or authentication needs. This is acceptable given the annotations, but not exceptional.

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 a single, front-loaded sentence that efficiently states the action and key outputs. No wasted words or redundant information. It earns its place without being overly verbose.

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 getter tool with annotations, the description lists the return components, which is helpful. However, it does not clarify how to specify which release (via taxYear/formType), leaves the 'audit' parameter unexplained, and with no output schema, the description could have been more explicit about the expected response structure. There is a gap in explaining the audit context.

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 0% description coverage, leaving the burden on the tool description to explain parameters. The description does not mention 'taxYear', 'formType', or 'audit' at all. While taxYear and formType are inferable from their enum values in the schema, the 'audit' nested object remains opaque. The description adds no value for parameter understanding.

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 ('Return') and explicitly identifies the resource ('a supported Form BE or Form B release') and what is included (official sources, validation result, review status, known limitations). This clearly distinguishes it from siblings like list_tax_authority_releases (which likely lists releases) and assess_form_b_2025_readiness (readiness check).

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 implies its usage: to retrieve a specific release's details. However, it provides no explicit guidance on when to use this tool versus list_tax_authority_releases or other siblings, nor any exclusion criteria. The context from sibling names suggests usage, but the description itself does not state it.

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