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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description contributes nothing beyond that — no note on pagination, default limit behavior, or result ordering — so it adds no behavioral value over the 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?

One short sentence with the action front-loaded, followed by a documentation link. It is appropriately sized, though the trailing URL is slightly noisy.

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 five-parameter, zero-required listing tool with full schema coverage and covering annotations, the description is minimally adequate: the structured fields supply limits, filters, and safety semantics. It is not misleading, but it omits any mention of result shape or default-limit implications for an agent that needs to call 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 100% and every parameter (limit, filter enum, projectId, missionName, projectName) is documented in the schema itself. The phrase "various filtering options" adds no syntax, default, or matching-behavior detail beyond it, so the 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?

The description states a specific verb+resource ("List user missions") and mentions filtering, which is enough to understand the operation. However, it never distinguishes itself from close siblings such as getMemberMissionsTool or findMissionTool, leaving the agent to guess which listing tool is appropriate.

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?

"with various filtering options" is the only usage hint; there is no when-to-use, no prerequisite, and no named alternative among the many sibling list/find tools. An agent gets no routing guidance at all.

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