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

Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, destructiveHint=false, so the safety profile is covered. The description adds valuable context beyond that: it merges DOJ press releases with SEC litigation releases, administrative proceedings and trading suspensions, is newest-first, and each item is dated and linked to the official source. This enriches behavior understanding without contradicting 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 front-loaded with purpose, includes concrete example queries in natural language, explains the data composition, and ends with a sibling routing hint. Every sentence earns its place with no fluff or repetition.

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 two-parameter, no-output-schema tool with annotations covering safety, the description is complete: it states what is returned (recent actions), the ordering (newest first), the sources merged (DOJ/SEC types), and how to navigate to the sibling for specific lookups. No critical calling information is missing.

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%: both 'limit' and 'source' are fully documented with descriptions covering defaults and ranges. The description adds no additional parameter-specific meaning, 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 description states a specific verb and resource: 'Recent US federal enforcement actions across DOJ and the SEC, newest first.' It also explicitly distinguishes from the sibling tool by saying 'Use enforcement_search to look up a specific company or topic by name,' so an agent can tell them apart even without opening schemas.

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?

It provides clear when-to-use context with example queries ('recent SEC enforcement actions', 'latest DOJ prosecutions') and explicitly names the alternative for specific lookups: 'Use enforcement_search to look up a specific company or topic by name.' This is an explicit routing instruction.

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