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

Annotations are all false (readOnlyHint=false, etc.), so the description carries the burden. It discloses that the tool only transmits the request and doesn't answer anything, and adds a safety-relevant rule about explicit user consent and previewing the sent data. It doesn't mention side effects like whether a confirmation is sent, but it is clear it's a write operation with user approval. This exceeds what annotations provide.

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?

The description is concise despite covering multiple rules. It front-loads the purpose, then gives conditions and exclusions in a clear order. Each sentence adds value; there is no fluff. It's slightly longer than minimal but justifiable given the compliance requirements.

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 tool that simply forwards contact info, the description covers all necessary aspects: when to call, what data to collect, consent handling, previewing, and how it differs from other tools. There is no output schema, but the tool's effect is straightforward. Nothing an agent needs to call it correctly 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%, with each parameter already described. The description reinforces the requirement for explicit consent (which the schema also states) and the phone/email requirement, but adds no new parameter-level semantics beyond the schema. It does provide some context about not inventing data, but that's a usage guideline rather than parameter meaning. Baseline of 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?

The description states a clear verb ('Trimite') and resource (contact details to the ClickPhone commercial team) with a specific purpose (so the user can be called with an offer). It also explicitly distinguishes itself from sibling tools by saying 'Pentru întrebări despre preţuri foloseşte celelalte unelte', making it unambiguous which tool to pick for this action.

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 gives explicit conditions: call only after the user explicitly asks to be contacted and provides name plus phone/email; do not fill in data from context or mark agreement on your own initiative; show what you're sending first. It also states the exclusion: for price questions use other tools. This is thorough and actionable.

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