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

Annotations cover the safety profile (readOnly=false, destructive=false, openWorld=true), and the description adds context they don't carry: it transmits the person's data to a third party and the outcome is an email reply within one business day, not a confirmed booking. It could go further and warn that repeated calls create separate requests (idempotent=false), but the key behavioral facts are disclosed.

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, no waste, and the core action is front-loaded ahead of the important non-booking caveat. Every clause carries information the agent needs.

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 no output schema, the description supplies what the agent needs about the outcome (email reply within one business day, no time is held). Combined with full schema coverage and existing annotations, nothing essential to correct invocation 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 schema already documents every field, including the hints about what to put in problem and availability. The description merely enumerates the same fields (name, email, problem, optionally company and availability) without adding format or quality guidance. Baseline 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?

States a specific verb and resource ("Sends The Landing Company a request for a free 30-minute call") plus the recipient (Campion Fellin) and the payload fields. It is unmistakably an outbound action rather than a lookup, so it cannot be confused with the get_*/list_* siblings, though it never names them.

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 exclusion "It does not book a time: the reply comes by email within one business day" tells the agent this is a request-submission tool, not a scheduling tool, which is exactly the confusion risk here. It stops short of naming when to prefer get_faq or get_approach instead of submitting a consultation request.

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