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

With no annotations provided, the description carries the behavioral disclosure burden. It reveals a key behavioral trait: the tool returns a summary, not the full entry text, and that canonical full text lives at the source URL. This is meaningful context that prevents an agent from expecting complete content.

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 concise sentences with no filler. The core purpose is front-loaded, and the behavioral caveat about canonical source placement is delivered immediately after.

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 simple one-parameter retrieval tool with no output schema, the description covers what is returned and what is not returned. It would be slightly stronger with explicit usage guidance against siblings, but the tool is low-complexity and adequately scoped.

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%, and the single parameter has a clear description with an illustrative example. The tool description adds little about the parameter itself, but the schema already provides sufficient semantic grounding, so a baseline score of 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 states a specific verb ('Get') and resource ('one source-authored summary') and spells out the fields returned: authors, references, source relationships, canonical URL, and CC attribution. This clearly differentiates it from sibling tools like list_entries or get_related_entries, which target different resources or scopes.

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 implies the tool is for fetching a single entry when its ID is known, but it never explicitly says when to use this tool over siblings or when to avoid it. There is no mention of alternatives such as list_entries for browsing or search_toolbox for discovery.

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