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

Annotations only supply readOnlyHint=true, and the description usefully adds the redaction behavior ('Storage passwords are redacted') and the underlying endpoint, which is real behavioral context beyond the annotations. It stops short of noting error/not-found behavior or permissions, but for a read-only fetch the disclosure is solid.

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?

Two compact sentences, the resource and its returned fields front-loaded, no filler. Every clause (field list, redaction note, endpoint) earns its place.

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 no output schema, the description compensates by enumerating the returned fields, and it flags the redaction behavior an agent should expect. For a single-entity read-only fetch, nothing needed to call it correctly is missing.

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?

There is a single parameter with 100% schema description coverage, so the schema already documents storage_zone_id. The description adds nothing about format or constraints, but the 'GET /storagezone/{id}' mapping confirms the ID is a path identifier. Baseline 3 applies when the schema does the heavy lifting.

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?

Specific verb ('Fetch') plus a clearly scoped resource ('one edge storage zone'), and it enumerates the returned fields (hostname, region, replication, storage used, 404 handling, connected pull zones). The singular 'one' cleanly distinguishes it from the sibling list tool bunny_list_storage_zones and from bunny_get_storage_zone_statistics.

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?

The word 'one' implies single-item retrieval as opposed to listing, and the API endpoint mapping reinforces it, but the description never explicitly names an alternative or states when to prefer this over bunny_list_storage_zones or bunny_get_storage_zone_statistics. Usage is implied rather than guided.

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