cbuae_base_rate

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

Annotations already declare readOnlyHint, idempotentHint and openWorldHint, so the safety and idempotency profile is covered. The description adds the useful 'current' qualifier (no historical data), but adds nothing about freshness, latency, or failure behavior for an open-world external call.

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?

One short sentence with the core purpose front-loaded, plus a brief return note. The 'Returns: Dict with base_rate_percent...' line is largely redundant given an output schema exists, but it costs little.

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 no-parameter, read-only lookup with an output schema and full annotations, the description is nearly sufficient. The only meaningful gap is not explaining how 'current' is sourced or differentiated from the sibling exchange-rate tools.

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 takes zero parameters, so the baseline of 4 applies. There is nothing for the description to disambiguate at the input level.

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?

States a specific verb and resource ('Get the current CBUAE base rate') with the unit (percentage) made explicit. It does not distinguish itself from sibling rate tools such as cbuae_exchange_rates, so an agent must infer the difference from names alone.

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 word 'current' implies a point-in-time lookup rather than historical series, which is a usable hint. However, there is no explicit when-to-use statement, no mention of when-not to use it, and no pointer to cbuae_exchange_rates or currency_rates as alternatives.

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