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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint false, covering the safety profile. The description adds valuable behavioral context: it returns only version metadata, not diffs, and is limited to 118th-Congress HR/S bills. No contradiction with annotations.

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 tightly structured: the first sentence states core behavior and output fields, the second gives natural-language usage examples, and the third clarifies scope and what the tool is not. Every sentence earns its place; there is no filler.

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?

There is no output schema, so the description must convey return values; it does so by listing version type/code, date, immutable package identifier, package page, and official XML URL. It also states the coverage limitation (118th-Congress HR/S only) and clarifies that this is metadata rather than diffs. This is sufficient for an agent to select and invoke the tool correctly.

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 input schema has 100% description coverage, including enums and clear explanations for bill_type, bill_number, and response_format. The description restates the HR/S scope but adds no parameter-level meaning beyond what the schema already provides, so the baseline of 3 applies.

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 first sentence names a specific verb and resource: 'Return every published GovInfo text-version link for one hosted bill', and it enumerates the returned fields. The examples clearly illustrate the intended use. However, it never explicitly names a sibling tool such as govinfo_legislation_search or govinfo_legislation_relationships, so it falls just short of full sibling differentiation.

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 provides concrete user intents ('show the introduced, reported, engrossed, enrolled, and law versions...', 'what version codes exist for S. 1?') and a broader goal ('assemble a reproducible legislative-text lineage'). The statement 'This is version metadata, not a text diff' adds a useful exclusion. It does not name alternative tools or give explicit when-not-to-use guidance beyond that.

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