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

No annotations are provided, so the description carries the full burden. It mentions that the access gate is the same as GET /rooms/:roomID, hinting at authorization, but does not explicitly state whether the operation is read-only or idempotent, nor does it disclose any side effects or rate limits. While the behavior is typical for a GET endpoint, the description could be more explicit.

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 structured into three paragraphs with important information front-loaded. The first paragraph states the endpoint and purpose, the second clarifies the type parameter, and the third provides alternatives. It is not overly verbose, but the third paragraph could potentially be more concise.

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 the tool's simplicity (2 parameters, no output schema, no annotations), the description covers the purpose, usage, parameter constraints, and alternatives. It does not describe the return format, but this is acceptable since there is no output schema and the tool is a straightforward retrieval of a summary.

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 description adds meaningful context beyond the schema: it explains that type is a path segment and that daily and weekly summaries cover different windows and live in separate slots. This extra detail helps the agent understand the parameter semantics better than the schema alone.

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 clearly states the verb (GET), resource (/rooms/:roomID/summary/:type), and scope (latest single summary of a given type for a room). It distinguishes from the sibling tool rooms_summaries by specifying that this one retrieves only the latest, while the sibling is for history.

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?

Explicitly states that type is required and explains the difference between daily and weekly summaries. Provides clear alternatives: use rooms_summaries for history and search_messages for specific content queries. This helps the agent decide when to use this tool versus others.

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