network_spf_record_checker

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

No annotations are present, so the description must disclose behavioral traits. It does not state whether the tool is read-only, if it modifies any state, or if it requires network access. The implication is that it performs a network check, but this is not explicit. The additionalProperties: true in the schema suggests flexibility not described, leaving potential confusion.

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?

The description is short (3 sentences) and front-loaded with the purpose. However, the opening 'Menu ID: spf_record_checker' is redundant with the tool name and could be removed. The reference to describe_tool is helpful but takes space.

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?

The tool has no output schema and the description does not explain return values. It mentions validating SPF records but does not clarify what input besides worker_id is needed (the schema allows additional properties, but no guidance). The agent is left guessing about the domain to check. The reference to describe_tool indicates incompleteness in this description.

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 schema covers 100% of parameters (one optional worker_id) with a clear description. The tool description does not add any extra meaning beyond the schema; it merely references describe_tool for full guidance. Baseline 3 is appropriate since schema already 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?

The description clearly states the verb 'Check and validate SPF records for email authentication' and specifies the resource (SPF records). It also mentions analyzing syntax, mechanisms, and policies, which distinguishes it from generic DNS lookup tools like network_dns. However, it does not explicitly contrast with siblings like network_dmarc_record_checker, and the title is not provided, slightly reducing clarity.

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?

No guidance is provided on when to use this tool versus alternatives. There is no mention of prerequisites, context, or exclusion criteria. The only hint is 'use describe_tool for full page guidance,' which offloads the responsibility without giving the agent any immediate direction.

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