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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does not explain what the API returns (e.g., a list of filings with metadata), whether the date range applies to filing dates, pagination behavior, or any rate limits. The description only says 'Access essential regulatory documents,' which is vague about the actual behavior and output structure.

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 concise, consisting of two sentences. It front-loads the main idea ('Stay updated with the most recent SEC filings') but includes some fluff ('Stay updated'). The rest of the sentence and the second sentence provide useful context about the source API and document types. It is reasonably efficient, though the first phrase could be replaced with a more direct verb like 'Retrieve' or 'List.'

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?

This tool has no output schema, no annotations, and the description is brief. It lacks critical context: whether it returns filings for all companies, what fields are included, how pagination works, and how it relates to sibling tools like getFilingsBySymbol or getLatest8KFilings. Given the absence of rich structured metadata, the description needs to explain more about the response and usage, but it does not.

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 provides 100% coverage of parameters, describing each of the four parameters (from, to, page, limit) with clear types and descriptions. The tool description adds context by listing form types, but this doesn't directly explain parameter meanings or syntax. Since the schema does the heavy lifting, a baseline of 3 is appropriate; the description adds minimal additional value for parameters.

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 that the tool accesses recent SEC filings from publicly traded companies and mentions specific form types (8-K, 10-K, 10-Q). This gives a clear sense of the resource and scope, distinguishing it from siblings like getLatest8KFilings (specific form) and getFilingsBySymbol (specific company). However, the verb 'stay updated' is not a direct API action, and it doesn't explicitly say 'list' or 'search by date range,' which the schema shows as the primary parameters.

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?

No guidance is provided on when to use this tool versus alternatives. The description does not mention that this tool retrieves filings across all companies within a date range, nor does it suggest using getFilingsBySymbol for company-specific filings or getLatest8KFilings for 8-K-only queries. The phrase 'Stay updated' implies a use case but gives no comparative context.

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