get_crypto_latest_quote

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

With no annotations, the description must carry behavioral disclosure on its own; 'Returns' does signal a read-only quote retrieval, and the loc requirement is stated. It does not mention side effects, rate limits, or freshness, but for a simple quote lookup with an output schema these omissions are minor.

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 short sentences, front-loaded with the operation and followed by the one required caveat; no wasted 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?

For a two-parameter quote tool with an output schema, the description covers the core operation and the critical loc convention. It could be stronger by naming relevant sibling tools, but nothing required to make a correct first call is missing.

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?

Both parameters are already described in the schema (100% coverage), so the baseline is 3. The description adds practical value by instructing the agent to always select 'us' among the loc enum values, which is not otherwise indicated as preferred.

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 first sentence names a specific verb ('Returns'), a precise resource ('latest quote'), and a scope ('one or more crypto symbols'), so an agent can separate it from get_stock_latest_quote, get_option_latest_quote, and get_crypto_latest_trade. The sibling differentiation is not explicit, but the resource and qualifiers are enough to make the purpose unambiguous.

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 provides one operational rule: the loc parameter is required and must always be set to 'us'. It does not, however, name any sibling tool or state when this tool should be preferred over alternatives such as get_crypto_quotes or get_crypto_latest_trade, so usage context is only implied.

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