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

Annotations already declare the read-only, idempotent, non-destructive, closed-world profile, so safety is covered. The description adds ordering ("newest first"), a pagination cursor mechanism, and the qualifier "confirmed" changes, but does not explain what confirmation means or whether historical revisions remain queryable.

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?

One sentence, purpose first, paging instruction second — nothing superfluous. The middle clause ("plans added, removed, or which fields moved") is slightly compressed and reads awkwardly, which keeps it short of a 5.

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?

An output schema exists, so return values need not be described, and the description covers purpose, ordering, and pagination. Remaining gaps — what "confirmed" means and auth requirements — are minor for a read-only tool with a required datasetId.

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 carries the burden. It does explain `after` as a revision number used for paging, adding real meaning over a bare integer, but says nothing about `datasetId` beyond the name. Roughly half the parameters get semantic support.

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: surfacing confirmed changes between revisions of a published dataset, with the kind of change enumerated (plans added/removed, fields moved). It is distinguishable from atlas_dataset_get and atlas_dataset_update, though it never names a sibling to sharpen the contrast against atlas_changes, which sounds adjacent.

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 paging instruction ("Page with `after`"), which tells the agent how to iterate but not when this tool is the right choice over atlas_dataset_get or atlas_changes. No exclusions or prerequisites are stated.

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