util_headers_analysis

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

With no annotations provided, the description carries the full behavioral burden. It does state that the tool 'provides information' about several header categories, which implies a read-only analysis operation. However, it does not disclose potential side effects, authentication requirements, rate limits, or any edge-case behavior such as redirects or unreachable URLs.

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, front-loaded sentence that efficiently states the purpose and lists the analyzed areas. The phrase 'in detail' is slightly redundant filler, but overall the description is compact and readable.

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 analysis tool, this is minimally adequate: the agent knows what to pass and roughly what to expect. However, with no output schema and no mention of return shape or format, the agent cannot fully predict the result structure. It also fails to distinguish itself from the closely related 'security_headers_check' tool.

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 input schema already documents the only parameter, 'url', with a clear description. Since schema description coverage is 100%, the baseline is 3. The tool description does not add any extra meaning or constraints about the URL format, but it does not need to for this simple single-parameter tool.

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 uses a specific verb and resource: 'Analyze HTTP response headers in detail.' It clearly identifies the tool's core function. However, it does not differentiate itself from overlapping siblings like 'security_headers_check' or 'cache_stats', which also cover security and caching angles.

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 gives no guidance on when to use this tool versus alternatives. It does not mention that security-specific header analysis should go to 'security_headers_check' or that caching-specific analysis might be handled by 'cache_stats'. The agent is left to infer selection from the name and description alone.

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