get_exposure_mmdb_single_sample_by_dtxsid

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

The annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=true, and destructiveHint=false, so the safety profile is covered. The description adds nothing beyond that — no note on data origin, sample scope, or what a 'single sample' record represents, which is the key behavioral ambiguity in this domain.

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?

It is a single, front-loaded sentence with no wasted words, but it is under-specified rather than genuinely concise. Brevity here comes at the cost of the disambiguation the agent needs against closely named siblings.

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?

An output schema exists, so return values need not be explained, but the description omits any distinction from the four closely related MMDB tools and gives no usage context. For a tool embedded in a dense exposure-analysis API, it is too thin to guide correct selection.

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 description coverage is 100% and the single dtxsid parameter is documented in the schema as 'DSSTox Substance Identifier'. The description adds no additional meaning about the identifier's format or role, so the baseline of 3 applies.

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 a verb (Retrieve) and a resource (MMDB single-sample data), which is clearer than a tautology. However, it does not disambiguate from the very similar siblings get_exposure_mmdb_single_sample_by_medium, get_exposure_mmdb_aggregate_by_dtxsid, and get_exposure_mmdb_aggregate_by_medium, nor does it clarify what 'MMDB' or 'single sample' means in this context. Purpose is identifiable but not differentiated.

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?

There is no guidance on when to use this tool versus the medium-keyed variant or the aggregate variants. The description provides no context, exclusions, or prerequisites beyond the bare purpose.

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