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

Annotations cover the safety profile (readOnlyHint=true), and the description adds valuable behavior: the return keying (Field105…, EntryId, DateCreated, CreatedBy, DateUpdated, UpdatedBy), the Filter1=Field105 Contains foo serialization, AND/OR defaults, and the pageSize cap of 100. It doesn't discuss rate limits or ordering guarantees, but it goes well past the annotations.

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 information-dense paragraph, front-loaded with what the tool returns and followed by filtering/sorting/paging and the sibling pointer. It is long but nearly every clause carries new semantics; only the trailing GET endpoint restates a known pattern.

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?

With 8 parameters, no output schema, and no nested objects, the description covers return keying, filtering, sorting, and paging adequately. An agent has enough to call it correctly; only edge details like error behavior or total-count semantics are 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?

Schema coverage is 100%, so the baseline is 3, but the description adds the wire serialization ('Filter1=Field105 Contains foo, combined with match AND/OR') and reiterates the 100 page cap, which meaningfully clarifies how the filter array and match parameters interact.

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+resource ('List a form's submitted entries') and immediately scopes how the entries are keyed (field API ID plus system fields). It explicitly contrasts itself with wufoo_get_labeled_entries, so an agent can pick between the two without opening schemas.

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?

Gives clear context for when to use it (API-ID keyed entries, Entry-Manager-style filtering/sorting/paging) and names the alternative tool for human-readable titles. It does not explicitly state when-not-to-use beyond that routing hint, so it falls short of a 5.

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