Recent Filings

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is fully covered structurally. The description adds the nature of returned content (filing dates, direct document links), but says nothing about result ordering, pagination, or rate limits. With annotations doing the heavy lifting, a 3 is appropriate.

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?

Two tight sentences: the primary action and returned content come first, the optional filter last. No filler, no repetition of the title, and no information an agent has to hunt for.

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?

With an output schema present, the description need not explain return structure, and it correctly focuses on scope and the optional filter. The only meaningful gap is the absence of any routing signal against the closely named sibling 'filing_search'.

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 all three parameters are already documented in the schema. The description restates the optional form_type filter and gives examples (10-K, 10-Q, 8-K, S-1), but adds no new syntax or format constraints beyond what the schema already provides. Baseline 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?

Specific verb (List) and resource (company's SEC filings) with concrete examples of form types and stated return content (dates, document links). However, it never differentiates itself from the sibling 'filing_search', which sounds like the same resource and could easily be confused with it.

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 implies usage through 'most recent' and 'Optionally filter by form type', so an agent can infer this is for listing a company's latest filings with an optional form narrowing. It offers no explicit when-to-use versus 'filing_search' or 'financials', nor any prerequisite or exclusion.

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