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

Annotations already establish readOnlyHint, idempotentHint, and non-destructive behavior, lowering the burden on the description. The description adds useful context by naming the API endpoint and detailing the rows returned (completion_verifications and verification_jobs) with their key fields, though it does not mention pagination or limits.

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 a single dense sentence that front-loads the action and resource, includes the endpoint, and lists the returned fields without repetition or fluff. The trailing "Read tier" is slightly redundant with the annotations but does not meaningfully detract.

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 one parameter, no output schema, and read-only annotations, the description is nearly complete: it explains what the tool returns and names the endpoint. Minor omissions such as pagination behavior or possible empty-result semantics are acceptable at this complexity level.

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%: completion_id is already described as task_completions.id (UUID) sourced from tascan_get_task -> completions[].id. The description adds no parameter-specific detail beyond the schema, so the baseline score of 3 is appropriate.

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 and resource: "Read a task completion's verification verdicts and job queue." It also names the exact endpoint (GET /completions/:completion_id/verifications) and enumerates the returned rows and fields, making it easy to distinguish from write-oriented siblings like tascan_request_verification.

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 clearly marks the tool as "Read tier" and states what data it returns, so an agent can infer when to use it. However, it does not explicitly contrast it with alternative verification-related tools (e.g., tascan_request_verification) or state when not to use it, leaving the choice somewhat implicit.

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