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 the ECFS source and the fields returned, but discloses no additional behavioral traits such as match semantics, pagination, or rate limits. With rich annotations present, this is acceptable 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?

Three front-loaded sentences: first states the action and system, second lists return fields, third gives use cases and filtering. No filler or redundancy; every sentence earns its place.

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 simple read-only search tool with zero required parameters, full schema coverage, and an output schema, the description is nearly complete. It provides domain context, source system, return fields, and filter hints. The only gap is not routing to adjacent siblings (proceeding_detail, search_filings), which matters but does not prevent correct invocation.

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 100%, so the baseline is 3. The parameter descriptions already document q examples, sort syntax, limits, and bureau codes. The tool description's mention of 'Filter by bureau (WC, MB, WTB, OET) or keyword' repeats schema content without adding new semantic value.

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-resource pair: 'Search FCC regulatory proceedings and rulemaking dockets from the Electronic Comment Filing System (ECFS).' It also names the fields returned. It does not explicitly contrast with sibling tools like fcc.regulatory.search_filings or fcc.regulatory.proceeding_detail, though the resource type (proceedings vs filings) is clear enough to differentiate.

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 gives clear when-to-use context: 'Use to research telecom regulatory actions on topics like net neutrality, spectrum allocation, broadband deployment, and consumer protection.' However, it provides no when-not-to-use guidance or explicit alternatives (e.g., 'for a specific docket use proceeding_detail'), so it stops short of a 5.

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