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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world behavior, so the safety profile is covered. The description adds only the 'published' state constraint and single-item scope, with no detail on errors, auth, or returned content. It does not contradict annotations.

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?

One front-loaded sentence with no filler; the purpose, scope, and key are all in the first clause. Nothing needs to be moved or removed.

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 single-resource read with a fully described parameter and rich safety annotations, the description supplies the essential purpose and lookup key. It omits return-value and error behavior, and does not route against search_listings, leaving minor gaps but nothing that would cause a wrong 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 coverage is 100% and documents the sole slug parameter, including pattern and length constraints. The description adds no format or syntax beyond repeating that lookup is by slug, so baseline 3 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?

States a specific verb ('Get') and resource ('one published sandbox provider') along with the retrieval key ('by its slug'). The singular, slug-keyed scope distinguishes it from list_* and search_listings siblings, which enumerate or query rather than fetch one known resource.

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?

Provides no explicit when-to-use guidance or named alternative; the agent must infer that this is for exact-slug lookups rather than search_listings. The phrase 'by its slug' implies the required precondition, but there is no statement about when not to use it or when to prefer a sibling.

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