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

Annotations already state readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the safety profile is covered. The description adds the important caveat that legal currency is NOT verified, which is genuinely useful behavioral context beyond the annotations. However it doesn't describe the return shape or what 'coverage' and 'synchronization' concretely mean.

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?

Two short sentences, zero waste, and the operative caveat ('Legal currency is not verified') is placed at the end for emphasis. Well-structured for a no-arg status 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?

For a no-param, read-only status tool with full annotation coverage, the description is adequate but thin: it doesn't explain what 'coverage' or 'synchronization' return, and there's no output schema to fall back on. The legal-currency caveat is the main value-add, but a caller still can't predict the response shape.

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?

No parameters exist, so the baseline is 4. Schema description coverage is 100%. Nothing parameter-related is missing or needed.

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') and resource ('Brazilian federal corpus coverage and synchronization status'). Distinguishes from siblings like get_legislation and search_legislation by scoping to coverage/sync status rather than content retrieval. Not a tautology despite title overlap.

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?

Implies usage (checking coverage/sync status before relying on the corpus) but gives no explicit when-to-use or when-not-to-use guidance. No alternatives named. The caveat about legal currency hints at a use boundary but is not framed as guidance.

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