helixar_inspect_mcp

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does well by explaining authentication requirements (quick mode is authless, deep mode requires api_key) and cost implications (quick mode is free). However, it doesn't mention rate limits, error handling, or what happens when scanning fails. For a security scanning tool with no annotation coverage, more behavioral context would be helpful.

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 perfectly front-loaded and concise. The first sentence establishes the core functionality, and the second sentence efficiently explains the two operational modes with their key differences. Every word earns its place with no wasted text or redundancy.

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?

Given the tool's complexity (security scanning with multiple modes), no annotations, and no output schema, the description does a reasonable job but has gaps. It explains the scanning purpose and mode differences well, but doesn't describe the return format (risk score structure, findings format, security brief details) or error conditions. For a tool with no output schema, more information about return values would be beneficial.

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 only 25% (only the 'target' parameter has a description), so the description must compensate. It adds significant value by explaining the 'mode' parameter's semantics (quick vs deep modes with rule counts and authentication differences) and implying the 'api_key' parameter's purpose for deep mode. However, it doesn't explain the 'context' parameter at all, leaving one parameter undocumented.

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's purpose with specific verbs ('scan', 'returns') and resources ('MCP server', 'Helixar's Sentinel detection rules'). It distinguishes itself from sibling tools by focusing on security scanning rather than validation or alert triage. The description explicitly mentions what the tool does: scanning against detection rules and returning risk scores, findings, and security briefs.

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 provides clear context about when to use different modes: 'quick mode is free + authless (top 8 rules)' and 'deep mode runs all 26 rules with an api_key.' This gives practical guidance on mode selection based on authentication and rule coverage. However, it doesn't explicitly mention when to use this tool versus the sibling tools (helixar_hdp_validate, helixar_triage_alert), which would be needed for a perfect score.

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