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

Annotations already declare mutation (readOnlyHint=false), idempotence, and non-destructiveness, so the bar is lower; the description still adds the important behavioral fact that the supplied list is the complete desired set, meaning unlisted sources are dropped and the empty case fails. It does not describe the response, which is the remaining gap.

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 sentences: the action and replacement semantics come first, then the enum payload, then the edge-case routing. Every clause is load-bearing; the long value list is necessary data, not padding.

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 2-parameter, no-output-schema mutation tool this covers the action, valid values, and the empty-list failure mode. It is slightly silent on prerequisites (e.g. whether the firm must already be on the Radar list via radar_adauga) and on the call's result.

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% but the schema descriptions are thin ("Sursele dorite, separate prin virgula") and carry no enums. The description supplies the entire valid source vocabulary plus the comma-separated convention, which is meaning the schema does not provide at all.

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?

Names a specific verb ("Seteaza") and resource ("sursele urmarite pentru o firma din Radar") and makes clear the operation is a full replacement ("lista completa dorita"), not an append. The enumerated vocabulary and the pointer to alerte_opreste distinguish it from every sibling without opening a schema.

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?

States a hard constraint (empty list is rejected) and routes the agent to the correct alternative for the empty case ("pentru «nimic» foloseste alerte_opreste"). That is explicit when-not guidance, not mere implied context.

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