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

Annotations already cover the safety profile (readOnly, non-destructive, openWorld), and with no output schema the description usefully discloses the payload contents: enabled and down milliseconds plus uptime percentage, with a total. It does not mention rate limits, auth requirements, or how large ranges are handled.

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?

A single dense sentence that front-loads the returned metric and appends the endpoint. Every clause carries information and nothing is padding.

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 description does the important work of sketching the return shape (per-bucket milliseconds and uptime %, plus a total). It is reasonably complete for a read-only reporting tool, though it omits how the total is computed across buckets and whether results are truncated for long ranges.

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%, so all six parameters (start, end, offset, interval, customer_id, check_id) are already documented in the schema. The description only echoes the day/month bucket notion that maps to the interval enum, adding no syntax or default 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?

Names a specific resource (uptime of a check) and scope (per day or month, with a total), and even cites the underlying endpoint GET /results/uptime/{id}. It is clear what the tool returns, though it does not explicitly contrast itself with nearby siblings such as nodeping_get_check_results or nodeping_get_check_summary.

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?

There is no statement of when to choose this over nodeping_get_check_results, nodeping_get_check_summary, or nodeping_get_check_events, and no prerequisites or exclusions. Usage is only implied by the word 'uptime'.

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