index_sec_filing

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

With no annotations, the description carries the full burden of behavioral disclosure. It does disclose the high-level process (fetch, chunk, index), which is more than many mutation tools, but it omits consequences such as whether indexing overwrites existing entries, idempotency, authentication requirements, or rate limits.

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, front-loaded sentence that names the operation and resource without wasted words. It is appropriately concise for the level of detail provided.

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?

The tool has 7 parameters, 6 required, with no annotations and zero schema descriptions. The description does not cover the meaning of required fields, the indexing workflow, failure modes, or what the output represents. An output schema exists, but it cannot compensate for missing parameter and operational context.

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 0%, and the description provides no explanation of the 7 parameters. Parameter names like cik, accession_number, and document_name are self-evident, but the purpose of contact_email and the behavior of the optional section parameter are completely undocumented.

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 states a specific action sequence ('Fetch, chunk, and index') with a clear resource ('a known SEC filing document') and purpose ('for RAG retrieval'). This distinguishes it from sibling tools like search_sec_filing_rag, which handles retrieval rather than indexing.

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 'known SEC filing document' implies the tool is for already-existing filings with identifiers, and 'for RAG retrieval' implies it prepares data for later retrieval. However, it does not explicitly state when to use this tool versus alternatives like search_sec_filing_rag, nor does it mention prerequisites or exclusions.

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