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

The annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is fully covered. The description adds only the REST path 'GET /v1/contactRoles/' and discloses nothing about pagination, result size limits, or what a contact role record contains — no value beyond structured fields.

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 fragments, front-loaded with the action and resource, with no padding. The endpoint path is arguably redundant for an agent but costs little space.

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 no-param, annotated, read-only list tool the essentials are covered, but with no output schema the description should say something about the returned shape (what fields a contact role has) and whether the result is paginated. That gap is the main incompleteness.

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?

The tool takes zero parameters, so there is nothing for the description to clarify; the baseline of 4 applies. No misleading parameter hints are given.

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 ('List contact roles'), which is unambiguous on its own. It does not distinguish itself from similar siblings such as opentoclose_list_file_roles, opentoclose_list_tags, or opentoclose_list_teams, leaving the agent to infer which role-type listing it needs.

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 listing verb implies 'call this to enumerate all contact roles', but there is no statement of when this is preferable to other list tools or of any prerequisites. For a zero-parameter enumeration tool the implied usage is reasonably obvious, so it lands at minimum viable rather than poor.

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