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

Annotations already establish readOnlyHint=false and destructiveHint=false, so the description is not responsible for the mutation signal. It adds meaningful context: the conversation_summary 'goes to the sales agent who will call them' and the tool 'returns confirmation with visit ID', revealing the real-world consequence of the action.

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 well-structured with short paragraphs, clear bullets, and a front-loaded purpose. Every section earns its place: trigger phrases, required/optional fields, and the conversation_summary instruction. There is no filler.

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?

With six parameters, no output schema, and a tool that triggers a real-world booking, the description covers the essentials: required/optional fields, source of rera_number, preferred_date formats, conversation_summary requirements, and the confirmation/visit ID return. It does not cover error cases or explicitly contrast with request_callback, but an agent has enough to invoke 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 description must compensate, and it largely does: it marks rera_number, user_name, and user_phone as required, gives preferred_date format examples, and explains that conversation_summary must be a 3-4 bullet briefing for the sales agent. It is thinner on notes ('any preferences') and rera_number ('from search results'), so not a full 5.

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 opens with a specific verb+resource: 'Book a free site visit for a Bangalore real estate project', and adds clear use cases ('schedule a tour, meet the builder, or get more information in person'). It also calls itself 'the PRIMARY action after a user shows interest', which helps separate it from siblings like request_callback.

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 explicit 'Use this when...' conditions and a bulleted list of trigger utterances ('I want to visit', 'book for me', 'register my interest'), which is strong guidance. It does not name an alternative tool such as request_callback or explicitly state when not to use this tool, so it falls just short of a 5.

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