verify_link

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

With no annotations provided, the description carries the burden of behavioral disclosure. It states the tool fetches a live page and checks for the target URL, anchor text, and nofollow status, which is transparent about the core behavior. However, it doesn't disclose potential side effects (e.g., network requests, rate limits) or what happens when the link is not found, which would be useful for a tool that performs live fetching.

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 a single, well-structured sentence that front-loads the primary action ('Fetch a live page') and then lists the specific verification checks. Every word earns its place, and the structure is easy to parse for an agent.

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 verification tool with no output schema and no annotations, the description covers the core checks but leaves gaps: it doesn't specify the return format (e.g., boolean, structured result), how to interpret the nofollow check, or edge cases like redirects or page load failures. Given the tool's simplicity, this is adequate but 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 description coverage is 0%, so the description must compensate. It mentions 'target URL' and 'anchor text' which map to the target_url and anchor_text parameters, but it doesn't explain the live_url parameter beyond the general 'Fetch a live page' context. The description adds some meaning but doesn't fully clarify the role of each parameter, especially anchor_text which is optional.

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 tool fetches a live page and confirms a backlink, specifying the exact checks: target URL present as a hyperlink, anchor text, and nofollow status. It distinguishes itself from sibling tools like build_link and log_link by focusing on verification rather than creation or logging, though it doesn't explicitly name those siblings.

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?

The description implies usage: use this tool when you need to verify a backlink on a live page. It doesn't explicitly state when not to use it or mention alternatives like search_sites or list_results, but the verification-focused language provides enough context for an agent to infer appropriate use.

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