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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds useful behavioral scope: it works across all three brief states and returns sections, text and history. It does not mention permissions, pagination or size of history.

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?

One front-loaded sentence with no filler. It packs the resource, its states and the returned parts efficiently; the only weakness is the parenthetical state list interrupting the flow.

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?

An output schema exists, so return-value shape need not be explained, and the description still signals what is included (sections, text, history). For a simple single-parameter read tool this is close to complete; only the id format and error behavior for a missing brief are unaddressed.

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 description coverage is 0% and the single 'id' parameter has no documented meaning in either schema or description. The description implies the id selects 'one brief', which gives the agent minimal working semantics, but it does not say whether it is a numeric id, slug or UUID.

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 ('read back') and resource ('one brief') and enumerates what comes back: sections, text, history. It also names the possible states (in progress, frozen, skipped), which implicitly separates it from list/mutation siblings. It stops short of explicitly contrasting with grill_list.

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?

Usage is implied rather than stated: retrieve a single brief by id. There is no explicit 'use this when you need the full content of one brief, use grill_list to enumerate briefs' routing, even though grill_list is a direct sibling that could be confused with it.

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