convert_currency_specific_date

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

Annotations only provide readOnlyHint, and the descriptions adds important behavioral detail: if no exact date rate is available, it uses the closest prior date. This is beyond what annotations provide. No contradictions.

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?

Two sentences, no redundant information, front-loaded with the action. Every sentence adds value (purpose + fallback behavior). Very 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?

The description covers the main functionality and fallback, but does not mention what the tool returns (converted amount, exchange rate, etc.). While schema covers parameters, the absence of output information leaves a gap for a tool with no output schema. Adequate but not complete.

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% with detailed parameter descriptions (amount, currency codes, date format). The description adds no additional semantics for parameters beyond the fallback for specific_date, which is already implied by the parameter description. Baseline 3 is appropriate.

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 the action (convert), the resource (amount between currencies), and the specific context (specific date), distinguishing it from siblings like convert_currency_latest. The fallback behavior adds clarity.

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 indicates when to use (specific date) and explains fallback behavior, but does not explicitly contrast with sibling tools or state when not to use (e.g., for latest rates). It is clear enough for an agent to decide.

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