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

The only annotation is idempotentHint=true. The description adds important behavior beyond that: it defines the input as a 'complete desired list' implying replacement semantics, and explicitly states that an empty list is rejected. It does not mention permissions or rate limits, but none are expected for this operation.

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?

Two tightly written sentences. The core action and scope are front-loaded, followed by the value enumeration and the validation/alternative rule. No redundant or filler content.

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 two-parameter mutation tool with no output schema, the description provides everything needed: what it does, the exact allowed values, the replacement semantics, and the rejection rule with an alternative tool. Nothing material is missing.

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%, so the baseline is 3. The description goes further by enumerating all valid source values for 'surse' and clarifying that the list is complete rather than incremental, which meaningfully supplements the schema's generic 'comma-separated desired sources'.

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 states a specific verb ('Seteaza') and resource ('sursele urmarite'), scopes it to a firm in Radar, and enumerates the exact allowed values. It also differentiates from the sibling tool alerte_opreste by explaining that empty lists should be routed there.

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?

It explicitly describes when to use the tool (to set the complete desired list of tracked sources), specifies a when-not condition (empty list is rejected), and names the alternative tool for that case ('alerte_opreste').

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