Life Line

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true. The description adds no behavioral insight beyond this, such as what the response contains or any side effects. The example body '{}' hints at an image but is ambiguous.

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 extremely short (3 words plus group and example) but lacks substance. While concise, it is under-specified and fails to convey necessary information. Front-loading is present but content is insufficient.

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 the tool involves palmistry interpretation and has no output schema, the description should explain input expectations and output nature. It only mentions 'Vitality, health, life force.' and a group, leaving the agent without enough context to use the tool 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 parameter 'body' is described only as 'Raw JSON body — see the example in the tool description for required fields'. However, the example is an empty object '{}', which provides no meaningful guidance on what fields or format are expected. Schema coverage is 100% but the description adds little value.

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 states 'Vitality, health, life force.' which are attributes of the life line but does not clarify what the tool does (e.g., interpret, analyze, or generate a reading). The verb is missing, making it unclear whether this tool provides an interpretation, an image, or something else.

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?

No guidance is provided on when to use this tool versus other palmistry tools like palmistry_fate_line or palmistry_head_line. There is no mention of context, prerequisites, or alternatives, leaving the agent to guess.

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