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

With no annotations, the description must carry the behavioral burden, and it does disclose the most important traits: 'Read-only; sends nothing' rules out mutation and external transmission, and 'for your key (or IP)' explains scoping/identification. It doesn't specify auth requirements or cost/permission implications, but the risky behaviors are covered.

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 tight sentences: the first states what the report contains, the second states the safety profile and the follow-up action. Nothing is redundant and the key scope (7 days, this key/IP) is front-loaded.

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 zero-param, no-annotation, no-output-schema tool the description is nearly sufficient: it lists the report's contents and rules out side effects. It could say more about the return format or whether the draft is persisted, but the agent has enough 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?

The tool takes zero parameters, so there is nothing for the description to disambiguate beyond the implicit scoping to the requesting key or IP, which it does mention. Baseline 4 applies for a parameterless tool.

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 verb and artifact ('Draft a plain-English report of the last 7 days') and enumerates its contents (runs, loops caught, wasted repeat steps, worst offenders), which implicitly separates it from the single-item siblings like check_step and loop_status. It stops short of explicitly contrasting itself with those siblings, so it lands just under a 5.

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?

Usage context is implied rather than stated: a 7-day report for your key/IP, plus the instruction 'Show it to your user' tells the agent what to do with the result. There is no explicit when-to-use vs. when-not guidance and no sibling is named as an alternative.

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