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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds meaningful behavioral context beyond those annotations: this is a premium paid call costing $0.20 USDC via x402, returns JSON, and produces a bundled report. No contradiction with the annotations was found.

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 dense but well organized: the core bundle concept is front-loaded, the included report modules are enumerated compactly, and the input format, output format, and price all appear in a few short phrases. Every clause 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?

Despite having no output schema, the description sufficiently communicates what the report contains, the accepted input (ticker or CIK), the response format (JSON), and the cost. It does not spell out the exact JSON structure or any rate limits, but for a single-parameter bundled report tool, this is a reasonably complete picture.

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%: the id parameter already states 'ticker (AAPL) or 10-digit CIK.' The description repeats 'Ticker or CIK' without adding format, validation, or usage details, so it provides no real semantic value beyond what the schema already offers.

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 clearly identifies the resource and deliverable: a bundled Company 360 report for a public company. It enumerates the report's components (financial-health verdict, insider-trading signal, SEC facts/filings) and signals this is the comprehensive 'full equity picture' option, which distinguishes it from single-purpose siblings like finance_health_scan and sec_company_snapshot.

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 phrase 'One premium call' gives clear context that this tool consolidates multiple data areas into a single paid call, implying it is the right choice when a comprehensive equity picture is needed. It does not explicitly name alternatives or state when not to use it, but the bundled positioning makes the intended use reasonably clear.

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