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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety and closed-world behavior are covered by structured data. The description adds useful context about what the data is for (allow-listing static addresses, country of browsing, available countries) but says nothing about response shape, freshness, or whether addresses are per-region — modest added value beyond 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 compact sentence with no filler, front-loaded with the framing and then listing the three data items returned. The metaphorical opening costs a little immediate clarity but the enumeration keeps it scannable.

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 zero-parameter, read-only getter with no output schema, the description conveys enough: what the resource is and the three pieces of information it yields. A short note on return format or scope (per-workspace vs global) would close the remaining gap.

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?

The tool takes zero parameters, so the schema carries no semantics to supplement; baseline is 4. Nothing in the description is needed for parameter usage, and nothing misleads about inputs.

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?

The description names the resource contents concretely — static egress addresses to allow-list, the browsing country, and available countries — so an agent knows this returns browser network configuration. It is a bit indirect ('How our browsers reach your sites') rather than stating a plain verb+resource, and it does not distinguish itself from siblings like get_usage or get_workspace, which is why it stops short of a 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?

There is no explicit when-to-use guidance and no mention of alternatives or exclusions. The 'allow-list' phrasing implicitly hints at a firewall/whitelisting scenario, but an agent must infer that this is the tool for retrieving egress IPs or geo information rather than, say, workspace configuration.

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