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

Discloses important behaviors: creates a replayable check, runs daily and in nightly replay (Pro), returns the check, and requires an API key. No contradiction with annotations.

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 concise sentences with no redundant wording, front-loading the core purpose and including essential constraints.

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 single-parameter, no-output-schema tool, the description provides enough context about behavior, scheduling, return value, and API key requirement.

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 fully covers the traceId parameter, and the description adds context by explaining the trace must be imported or recorded.

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?

Clear verb 'Turn ... into a replayable check' identifies the action and resource, and it is distinct from sibling tools like agentcheck_record and agentcheck_run_now.

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?

States the input is an imported or recorded trace, implying when to use it, but does not explicitly contrast it with sibling tools like agentcheck_add_check.

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