Lenormand — 9-Card Square

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

Annotations indicate idempotent and read-only behavior. Description adds the grid interpretation (rows/columns meanings) but does not disclose details like seed-based randomization or handling of reversed cards. 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?

Three concise lines: grid meaning, group label, and example. No unnecessary text; the most critical info 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?

Without an output schema, the description does not explain return values or card significance. It omits details like card orientation interpretation or result structure, which are needed for an AI to fully understand the tool's usage.

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 for 'body' is generic (raw JSON), but the description provides a concrete example with required fields (seed, question, allowReversed), adding meaning beyond the schema's minimal definition. This compensates for the schema's lack of inner structure documentation.

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?

Description clearly states the tool produces a three-by-three grid with rows representing past/present/future and columns representing mind/heart/body, forming a 9-card square. It distinguishes from other Lenormand draws like line_of_five or three_card by specifying the unique layout, though it doesn't explicitly state the tool's name in verb form.

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 explicit guidance on when to use this tool versus alternative Lenormand draws or other tarot tools. The example request body implies typical usage, but lacks context on selection criteria or exclusions.

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