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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered elsewhere. The description adds nothing beyond that — no note on error behavior for a missing ID, no indication of what a deployment record contains, and no auth context.

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, which is structurally clean. The terseness crosses into under-specification, though: the same word count could have carried the ID-format hint that is currently missing.

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 annotated read tool this need not be long, and the annotations plus the absence of an output schema reduce the burden. Still, with 0% parameter documentation the definition leaves the agent guessing about the identifier format, which is the one thing needed to call it correctly.

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 single required parameter "id" is documented nowhere. The description does not say whether this ID is a numeric deployment ID, a UUID, a name, or a slug — a real ambiguity given siblings like deployments_getGit and deployments_getStartup.

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?

"Fetch a single deployment" states a specific verb (fetch) and resource (a single deployment), making the singular scope clear. It does not, however, distinguish this from the near-identical siblings deployments_getGit or deployments_getStartup, so an agent must infer the difference from names alone.

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 gives no when-to-use guidance, no prerequisites, and no pointer to an alternative such as deployments_list for enumerating deployments. The only implicit signal is the word "single," which is too weak to route an agent reliably among ~30 siblings.

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