Latest Financial Report

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true, covering safety and idempotency. The description adds behavioral context by listing the returned fields and mentioning 'key financial highlights', which is helpful but not extensive. No contradictions 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 a single, well-structured sentence that efficiently states the purpose and return value. It uses front-loading effectively, with no superfluous words.

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?

Given the simple tool (one parameter, clear output schema exists, annotations are rich), the description is largely sufficient. It specifies the returned fields and implies the result is a summary. Minor omission: could mention that it retrieves the most recent report, but the word 'latest' already conveys that.

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 for the single parameter 'symbol', with a clear example. The description only mentions 'for a security', adding no extra semantic value beyond what the schema provides. Baseline 3 is appropriate.

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 'Get' and resource 'latest financial report summary for a security', clearly stating the action and scope. It lists return fields, which adds clarity. While it doesn't explicitly differentiate from sibling tools like 'financial_report' or 'financial_report_snapshot', the word 'latest' implies a distinct purpose, achieving a score of 4.

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 no explicit guidance on when to use this tool versus alternatives. Given the extensive sibling list including similar tools like 'financial_report' and 'financial_report_snapshot', the lack of usage context or exclusion criteria is a notable gap.

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