iaas_get_external_ip_block

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The description adds genuinely useful domain context (external IP blocks come from an external IPAM provider and are containers for subnetworks), but says nothing about failure behavior for a bad id or auth requirements.

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?

Three short lines, front-loaded with the action, followed by the domain gloss and the endpoint. Every sentence is relevant, though the domain gloss could arguably sit after the id semantics.

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?

For a read-only single-resource GET with full schema coverage and rich annotations, the description supplies what the structured fields cannot: what an external IP block actually is. Only the absence of error/empty-result behavior keeps it from a 5.

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 100%, so both the 'id' path parameter and 'apiVersion' are already documented by the schema. The description only restates that lookup is by id and adds no format, example, or apiVersion guidance, which is the correct baseline when the schema does the work.

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+selector ('Get specific external IP block by id'), and the definition sentence plus REST endpoint make the resource unambiguous. The singular-vs-plural distinction from iaas_get_external_ip_blocks is implicit rather than stated outright, so it stops just short of 5.

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 'by id' — an agent can infer this is the single-item fetch versus the list sibling — but the description never says when to choose this over iaas_get_external_ip_blocks or what to do without an id. No prerequisites or exclusions are given.

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