Get network ACL rule

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

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is fully covered elsewhere. The description adds nothing behavioral beyond restating the name — no note on what happens if the ID is unknown, whether the lookup is scoped to an account/project, or what fields come back.

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 front-loaded sentence with zero filler and no redundancy. It is appropriately sized for a one-parameter lookup, though it is so terse that no secondary detail is conveyed.

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?

This is a simple single-ID getter with full annotation coverage and a complete schema, so the description's minimalism is largely defensible. However, with no output schema present, the description offers no hint of what a network ACL rule record contains, leaving that entirely to inference.

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 id property already documents itself as a UUID sourced from list_network_acl_rules, which is better placement than the description. The description contributes no additional meaning about the identifier, so the baseline of 3 applies.

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?

"Get one network ACL rule by ID" gives a specific verb (get), resource (network ACL rule), and cardinality (one), which clearly separates it in spirit from the sibling list_network_acl_rules. It stops short of naming that sibling explicitly, so the differentiation is implied rather than stated.

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?

There is no guidance on when to reach for this tool versus list_network_acl_rules or get_network_acl_list, and no prerequisites or context about where an ID comes from beyond the schema note. The agent must infer that this is the single-item lookup path.

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