get_bioactivity_summary_by_dtxsid

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is fully covered. The description adds nothing beyond that — it does not say what the summary aggregates, whether the DTXSID must be pre-resolved, or how missing data behaves. With annotations doing the heavy lifting, this earns a low score for adding no new behavioral context.

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?

A single short sentence with no filler and the resource front-loaded after the verb. It is efficiently sized, though its brevity reflects under-specification rather than tight editing of rich content.

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 described, and annotations cover the safety profile. The remaining gap is disambiguation from the by_aeid and by_tissue siblings, which the description does not address and which is the primary decision an agent faces here.

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?

There is one parameter with 100% schema description coverage, so the schema already documents the DTXSID input; per the rubric this sets a baseline of 3. The description's phrase 'for a chemical' adds only marginal meaning beyond the schema and name.

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 (fetch) and resource (bioactivity summary data) and hints at the chemical-keyed scope. However, it never distinguishes itself from the two near-identical siblings get_bioactivity_summary_by_aeid and get_bioactivity_summary_by_tissue, so the agent must infer the keying from the tool name 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?

There is no when-to-use guidance, no statement of prerequisites, and no mention of the alternative summary tools keyed by assay endpoint or tissue. An agent choosing among three sibling summary tools gets no routing help from the description.

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