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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is covered. The description adds real value by enumerating the returned fields (name, stage, status, value, currency, closing date, owner), which compensates for the absent output schema, and by naming the underlying REST endpoint.

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 short sentences, front-loaded with what the tool returns, then the endpoint. Nothing is wasted, though the raw endpoint line is of marginal value to an agent that isn't reasoning about the underlying API.

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 field enumeration is the key completeness contribution, and it is present. Gaps remain around pagination behavior, empty-result handling, and response ordering for a list tool, but for a single-parameter read this is largely sufficient.

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?

Only one parameter and schema description coverage is 100%, so the schema already documents contact_id fully. The endpoint path 'GET /Contacts/{id}/Deals' weakly confirms the id is a path segment, but the description adds no format or sourcing detail beyond the schema. 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 resource and scope: 'All deals of one contact.' The contact-scoped framing implicitly separates it from revampcrm_list_deals and revampcrm_list_deals_by_stage, though neither sibling is named explicitly.

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?

Usage is only implied — an agent should call this when it has a contact id and wants that contact's deals. There is no explicit when-to-use vs when-not guidance, and no mention of when to prefer revampcrm_list_deals or revampcrm_search_deals instead.

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