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

No annotations are provided, so the description bears the full burden. It does disclose that the snapshot is 'immutable' and that the integrity check is 'recomputed', which hints at conservative behavior. Yet it omits error handling, permission requirements, or behavior when the digest does not exist. The description provides only minimal behavioral insight, leaving significant gaps.

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 single, front-loaded sentence with no wasted words, and it prioritizes the core subject. However, it is under-specified, omitting essential details about the input parameter and usage. While concise, it sacrifices necessary information, so it does not merit a higher score.

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?

Given a single required parameter and no output schema, the description should at least explain that 'digest' identifies the snapshot, and describe what the return value includes. The description covers neither the input semantics nor the response structure. The many sibling tools increase the need for contextual differentiation, which is absent.

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?

The schema has zero description coverage for the single required parameter 'digest', and the tool description does not mention it at all. The agent is left to infer that 'digest' is an identifier, which is critical for correct invocation. The description adds no meaning beyond the schema's pattern regex.

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 the resource ('adoption snapshot') and provides distinguishing attributes (immutable, exact historical summary, recomputed integrity check). It is not a tautology and clearly indicates that the tool returns a snapshot. However, it lacks an explicit verb like 'retrieves' and does not differentiate from sibling 'get_adoption_trends' which likely aggregates multiple snapshots.

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?

No guidance is given on when to use this tool versus any of the 27 siblings. The description contains no context, prerequisites, or exclusions. An agent cannot determine from the description whether to choose this over 'get_adoption_trends' or 'get_history' without inspecting each individually.

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