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

No annotations are provided, so the description must fully disclose behavioral traits. It only states that the tool measures and detects zones, but does not indicate whether it is read-only, requires authentication, has side effects, or any other behavioral characteristics. This is insufficient for safe and correct invocation.

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 sentence without fluff. It is front-loaded with the core purpose. However, it could be slightly more informative without adding length, such as mentioning the output format.

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?

Given no parameters and no output schema, the description should explain what the tool returns and how to interpret the zones. It only mentions detection but not the output structure or format. This leaves the agent uninformed about what to expect after invocation.

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 input schema has zero parameters and schema description coverage is trivially 100%. With no parameters, the description does not need to add parameter meaning. Baseline for 0 parameters is 4.

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 clearly states that the tool measures System of Thought Integration and detects frozen/comfort/creative_edge zones. This gives a specific verb (measure, detect) and resource (SoTI zones), and is distinct from sibling tools like arena-signal or phase-signal. However, it lacks explanation of what SoTI is or what the zones mean, slightly reducing clarity.

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 provides no guidance on when to use this tool versus alternatives. It does not mention any prerequisites, context, or scenarios where ji-sensing is appropriate. This leaves the agent to guess the appropriate usage context.

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