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

No annotations are provided, so the description carries the burden. It usefully discloses that the output is a summarized interpretation ('in our own words') with source links and warns that the 'Summary may be incomplete,' which is meaningful behavioral context. It does not state authentication needs, rate limits, or exact return structure.

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?

The description is a compact, front-loaded statement of resource, scope, output style, and the incompleteness caveat. Every phrase carries useful information and there is no filler.

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 or annotations, the description adequately explains what is returned and flags the main reliability caveat. It stops short of clarifying whether the result is a list of changes versus prose summary, or timezone handling for the date.

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 0%, so the description must compensate for the single parameter. It does so by giving the expected date format (YYYY-MM-DD) and the inclusive semantics ('on or after'). It does not address timezone or invalid-input behavior, keeping it short of a 5.

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 names a specific resource (MCP and A2A specs) and a clear temporal scope (changes on or after a date), plus what kind of output to expect (own words with source links). It does not explicitly say 'returns' or name a sibling as a contrast, but the purpose is clear enough for an agent to distinguish it from the count/totals siblings.

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?

Usage is implied by the resource and date filter, but there is no explicit when-to-use guidance, no when-not-to-use conditions, and no alternative tool named. The sibling tools are statistically different, so misuse risk is low, but the description leaves selection reasoning to inference.

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