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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior. The description adds meaningful context beyond that: deterministic reconciliation, duplicate/retest lineage checking, optional owner-supplied limit, and exact exceptions with source-file/row provenance. It does not disclose authorization or rate-limit considerations, but for a safe read tool that is a minor gap.

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?

Three tightly written sentences, front-loaded with the primary reconcile action followed by secondary checks and the return guarantee. No filler. Could be marginally tightened but it earns its length.

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?

Return values are described even without an output schema, and the core behavior is clear for a safe read-only tool whose annotations cover the safety profile. The absence of usage guidance relative to siblings is the main remaining 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?

Schema description coverage is 0%, so the description carries the burden. It does explain expected_ids ('expected Cable IDs'), the CSV evidence input, and the optional expected test limit, but source_file is only obliquely referenced via 'source-file provenance' and the format/syntax of csv_text and expected_test_limit is left unstated. Partial compensation only.

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 specific verbs and resources: reconcile expected Cable IDs against contractor certification CSV evidence, plus duplicate/retest lineage checks. It clearly conveys an audit function. However, it does not explicitly distinguish itself from the sibling inspect_certification_package, so an agent must infer the boundary from the verb contrast.

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 explains what the tool does but gives no when-to-use guidance, no prerequisites, and no comparison against the siblings cablecert_service_info or inspect_certification_package. An agent has no signal for choosing this tool over inspect_certification_package.

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