Is every lane current

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

The annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds one useful operational fact, 'No API key needed', which is authentication context not present in the annotations. It says nothing about cost, latency, or what the check actually returns.

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?

It is a single compact sentence with no filler, and the core question is front-loaded. The brevity comes at some cost, because the 'lane' and 'layer' vocabulary is never grounded.

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 absence of an output schema means the description should hint at what a health check returns, such as a per-lane currency verdict; it only poses the question. For a zero-parameter read tool the annotations carry most of the weight, but the jargon leaves a real gap.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for a parameterless tool applies.

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 phrase 'is the data current?' together with the tool name 'tilla_health' signals a freshness or health check, but 'lane' and 'layer' are unexplained in-house jargon, so what exactly gets checked is unclear. It does not distinguish itself from close siblings such as tilla_status or tilla_latest.

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?

There is no explicit statement of when to call this tool instead of tilla_status, tilla_latest, or tilla_changes, and no precondition or exclusion is given. The agent must infer the routing from the title alone.

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