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

Annotations already mark the tool as read-only, and the description adds the behavioral scope: it reports freshness, delays, and failures. It does not describe return format, aggregation, or side effects, but for a read-only status tool the safety profile is covered by annotations. No contradiction.

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 compact phrase that lists three relevant aspects without filler. It is appropriately short and front-loaded with the resource, though its brevity limits the amount of useful context it can convey.

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 simple read-only health tool with one optional parameter, the description plus schema and annotations is minimally viable. It lacks an explicit output contract, a list of covered pipelines, and usage alternatives, so it is not fully 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 100%, so the baseline is 3 even without parameter details in the tool description. The tool description itself adds no parameter-level meaning; the schema's parameter text is detailed but somewhat tangential and verbose.

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 identifies the resource (data pipelines) and the key health dimensions (source freshness, delays, failures), making the purpose recognizable. However, it is a noun phrase without an explicit verb and does not differentiate from sibling tools like get_codex_pipeline_stats or get_outcome_settlement_health.

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 guidance on when to use this tool versus alternatives such as get_codex_pipeline_stats or get_alert_delivery_stats. No prerequisites, exclusions, or contextual triggers are provided; usage is only implied by the name and the noun phrase.

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