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

With no annotations, the description must disclose behavioral traits. It mentions '5-minute intraday data' and 'near real-time', but does not clarify the exact data shape (OHLC, volume), timezone handling, or potential limitations. No contradictions with annotations exist.

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 two sentences but contains redundancy: 'Track short-term forex trends' and 'Access detailed 5-minute intraday data' overlap. It could be condensed to a single informative sentence. No structural issues, but not maximally concise.

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 moderately complex tool with no output schema, the description is incomplete. It fails to specify what the returned data contains (e.g., OHLC values, timestamps), any date range constraints, or how the 'from' and 'to' parameters interact. The minimal description leaves the agent guessing about the tool's full capabilities.

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 coverage is 100%, so all parameters (symbol, from, to) have descriptions. The tool description adds no additional meaning beyond the schema. Baseline 3 is appropriate since the schema does the heavy lifting.

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 identifies the tool as providing 5-minute intraday forex data for tracking short-term trends. It uses active verbs like 'track' and 'access', and the mention of '5-Minute' distinguishes it from sibling interval tools like 1-minute or 1-hour variants. However, it could be more direct about the retrieval function.

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 use for short-term trend monitoring but does not explicitly state when to prefer this over sibling tools (e.g., getForex1MinuteData for more granular data or getForex1HourData for longer intervals). No exclusions or alternative guidance are provided.

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