acronis_fetch_agent

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

Annotations already declare readOnlyHint=true, so the safety profile is covered, but the description adds nothing further — no note on behavior for an unknown ID (error vs empty), no indication of what the returned agent object contains, and no mention of required permissions. For a read-by-ID tool this is behaviorally thin.

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?

A single short sentence with the verb and selector front-loaded and zero filler. It is appropriately sized for a one-parameter lookup, with no redundant or wasted clauses.

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?

The tool is simple, the sole parameter is documented in the schema, and annotations cover the read-only safety profile, so much of the burden is already met. However, with no output schema, the description gives no sense of the returned agent fields or failure behavior, leaving a meaningful gap for an agent deciding whether this call answers its question.

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?

There is a single required parameter whose nested agent_id is fully documented in the schema at 100% coverage, so the baseline of 3 applies. The description adds only the phrase "by ID", which aligns with but does not extend the schema's "The registered agent ID."

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 ("Gets") and resource ("Acronis agent") with a clear cardinality and selector ("one ... by ID"), which implicitly separates it from the list-style sibling acronis_fetch_agents. It does not name the sibling or explicitly contrast with it, so it stops short of full differentiation.

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 when-to-use guidance, no mention of prerequisites such as needing a registered agent ID, and no reference to the alternative acronis_fetch_agents for listing or discovery. The only hint is the phrase "by ID", leaving the agent to infer that a known identifier is required.

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