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

Beyond the annotations, which already confirm readOnly, idempotent, non-destructive, and closed-world behavior, the description discloses rich domain-specific behavior: vowel points and cantillation are stripped, final letters count as ordinary forms in absolute value and as 500–900 in large value, and both results are returned rather than chosen.

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 two efficient sentences plus clearly bracketed metadata, with the cipher list front-loaded and the final-letter rule immediately after. Every sentence carries distinct information with no redundancy.

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?

An output schema exists, so return values need not be explained, and the annotations already carry the safety profile. The description supplies the remaining domain context—Hebrew text input, cipher behavior, and final-letter handling—while the schema covers the compact-mode parameters.

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 coverage is 67%: fields and precision are documented in the schema, while text has no schema description. The description compensates by specifying that text is Hebrew, which is a meaningful constraint not present in the structured schema, though it adds nothing further for the other two parameters.

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 names a specific operation—seven standard gematria ciphers over Hebrew text—and lists the exact ciphers (absolute, large, small, ordinal, inclusive, AtBash, AlBam). This distinguishes it from sibling Kabbalah tools like sephiroth and shem names without ambiguity.

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 does not state when to select this tool over sibling Kabbalah or esoteric tools, nor does it name any alternatives or conditions that would favor it. Usage must be inferred entirely from the stated purpose, with no explicit routing guidance.

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