nse_fii_dii_data

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

The description mentions the data is for today and includes interpretation hints (FII net buy = bullish). However, it does not disclose data freshness, source, or potential limitations (e.g., only available when market is open). No annotations are provided to compensate.

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 extremely concise: three short sentences plus a one-line example. It front-loads the core action and immediately adds value with interpretation and usage example. No unnecessary 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 tool has no parameters and an output schema exists, the description provides sufficient context: what data is returned, how to interpret it, and a concrete example. No additional information is needed.

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 tool has no parameters, and the input schema is empty with 100% coverage. The description reinforces that no arguments are needed, meeting the baseline for parameterless tools.

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 it retrieves FII and DII activity data, including net buy/sell amounts and their market signals. It distinguishes itself from sibling tools by focusing specifically on institutional daily flow data.

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 says 'No arguments needed' and provides an example call. While it implies usage for today's activity, it does not explicitly contrast with alternatives like amfi_fund_flows or nse_bulk_deals, which are sibling tools for different data.

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