netintel_dns_lookup

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

With no annotations, the description carries the full burden, and it does disclose real behavior: eight record types in a single call, SPF/DMARC/DKIM parsing, and A-record cross-checking against three named resolvers. It omits rate limits, failure modes, and whether the extra parsing always runs, so the disclosure is partial.

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 sentences, front-loaded with the core verb and resource, with the enumeration and enrichment features following. Dense but essentially waste-free; only the long record-type list and acronym stack slow the read slightly.

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 single-parameter tool with no annotations and no output schema, the description adequately explains what it returns conceptually, but it leaves the input format, sibling routing, and any return-shape expectations unaddressed. Adequate, not complete.

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 0% and there is one undocumented parameter. 'For any domain' loosely signals the input shape, but the description never states whether a bare domain, subdomain, or URL is accepted, and listing PTR records is ambiguous because reverse lookups normally require an IP, not a domain.

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 and resource ('DNS lookup for any domain') and enumerates the exact record types resolved (A, AAAA, MX, TXT, NS, CNAME, SOA, PTR), so the agent knows precisely what the call covers. It stops short of distinguishing itself from close siblings like netintel_dns_propagation or netintel_dnssec_validate.

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 statement of when to use this tool versus the many adjacent siblings, and no exclusions. The claimed cross-resolver propagation check actively overlaps with netintel_dns_propagation without clarifying the division of labor, which could misroute an agent.

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