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 fully covered. The description adds only that results are 'paginated' and scoped to 'the archive'; it says nothing about rate limits, aggregation window, or behavior on unknown IPs.

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 dense sentence with the verb-resource and returned data front-loaded; every clause earns its place and nothing is padded.

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 an output schema present, the description need not explain return shapes, and it does cover data scope and pagination. The remaining gap is input semantics for ip_address and the paging parameters, which no structured field fills.

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% across three parameters (ip_address, page, limit), so the description must compensate and largely does not. The single word 'paginated' hints at page/limit but gives no defaults or semantics, and the accepted IP format (IPv4/IPv6/CIDR) is never stated.

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 states a specific verb and resource ('Get statistics for an IP address across the archive') and enumerates the exact aggregates returned (scans, unique URLs, first/last seen, geolocation, ASN/org, BGP, DNS), which functionally separates it from siblings like search_by_ip or get_rdap. It never names an alternative, so the differentiation is implicit rather than explicit.

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 only implied: an agent can infer 'use this to summarize an IP', but there is no statement of when to prefer it over search_by_ip, get_ct_domains_by_ip, or get_rdap, and 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.