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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true. The description adds the owner-only access constraint, which is useful, but says nothing about retention window, pagination beyond the limit, or what the output schema contains. With annotations carrying the safety profile, a 3 is appropriate.

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 short sentences with zero waste, front-loading the read scope and then the limit constraint. Efficient and appropriately sized for a simple read tool.

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?

An output schema exists, so return values need not be explained. But with 0% schema coverage and an undocumented required agent_id, plus no guidance on how this differs from adjacent diagnostic tools, the description is only minimally complete for correct invocation.

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 for all three parameters. It gives a range for limit (1–500) but leaves agent_id and api_key completely undocumented in both schema and description, which is inadequate for a required agent_id.

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 (read) and resource (recent HTTP/TLS results), plus the purpose (diagnose failures). It distinguishes itself from sibling readers like agent_health_feed or agent_health_status by naming the exact result type, though it doesn't explicitly contrast with them.

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?

Usage is implied by 'to diagnose failures', but there is no explicit when-to-use/when-not-to-use guidance or naming of alternatives such as diagnose_http or diagnose_mcp, which the agent must infer from the sibling list.

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