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

Annotations already establish readOnly, idempotent, non-destructive, and closed-world behavior, so the description does not need to restate those. It adds a small amount of useful context by describing the result as 'bounded' and 'machine-readable' and by requiring a 'known' slug, but it does not disclose behavior for missing/invalid slugs or any limits implied by 'bounded'.

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 entire description is a single, front-loaded sentence with no filler. Every word contributes either the action, the output nature, or the precondition.

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 one-parameter, read-only/idempotent retrieval tool, the description covers the core call path: supply a known slug and receive a bounded repair packet. While there is no output schema, the description's mention of the packet and its bounded, machine-readable nature provides enough for a basic call, though error cases and packet contents are left unspecified.

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 schema only gives min/max length and requiredness for slug, with no descriptions, so schema coverage is effectively 0%. The description adds domain meaning by identifying the slug as a known FixGraph identifier and tying it to the repair packet, but it does not explain slug format, where to obtain it, or how the 'bounded' constraint affects results.

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 a precise action ('Return'), a specific resource ('repair packet'), and the key precondition/scope ('bounded... for a known FixGraph slug'). This clearly separates it from sibling list/diagnosis tools, though it does not explicitly name the siblings or contrast 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?

The phrase 'for a known FixGraph slug' implies the tool is only appropriate when a slug already exists, with discovery presumably happening elsewhere such as list_fix_topics. However, there are no explicit when-to-use or when-not-to-use statements and no mention of resolve_technical_error as an alternative, so guidance is implied rather than stated.

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