index_history_price

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

With no annotations, the description must disclose behavioral traits. It only mentions the one-month request limit and does not specify whether the data is OHLC, trade, or quote, nor any other behavior like data adjustments or interval restrictions.

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 very short with two sentences, but the leading '[VALUE]' placeholder is unnecessary and adds noise. The content is concise, but the placeholder undermines professionalism and clarity.

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?

For a tool with 7 parameters, no output schema, and no annotations, the description is too thin. It fails to explain what 'price reports' includes, how date and time parameters interact, or the meaning of interval options. The one-month limit is the only extra context provided.

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 schema covers all seven parameters with descriptions, so the baseline is 3. The one-month limit adds context to date parameters but does not add specific parameter semantics beyond what the schema already provides.

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 it provides historical price reports for an index, which is clear about the resource and general action. However, it does not differentiate from sibling tools like index_history_eod or index_history_ohlc, leaving ambiguity about what specific price data is returned.

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 given on when to use this tool versus alternatives such as index_history_eod or index_at_time_price. The only constraint mentioned is the one-month limit, which is a limitation rather than a usage guideline.

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