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IBM

MCP Math Server

by IBM

octal_to_decimal

Convert octal numbers to decimal format for mathematical calculations and programming applications. This tool processes base-8 input to produce standard decimal output.

Instructions

Convert octal (base-8) to decimal number. (Domain: arithmetic, Category: number_systems)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
octal_strYes
Behavior2/5

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

No annotations are provided, so the description carries full burden. It mentions the conversion action but lacks behavioral details such as input validation (e.g., handling invalid octal strings), error handling, or output format. This is inadequate for a tool with no annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is brief and front-loaded with the core purpose in the first sentence. The domain/category tags are efficient but could be integrated more seamlessly. No wasted words, though slightly terse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no annotations, no output schema, and low parameter coverage, the description is incomplete. It doesn't explain what the tool returns (e.g., integer, string), error conditions, or usage nuances, leaving significant gaps for a conversion tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It implies the parameter is an octal string but doesn't specify format constraints (e.g., valid characters, leading zeros). The description adds minimal meaning beyond the schema's basic type definition.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with a specific verb ('Convert') and resource ('octal (base-8) to decimal number'), and distinguishes it from siblings by specifying the exact conversion type. The domain and category tags further clarify its mathematical context.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

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 alternatives like 'base_to_decimal' or 'decimal_to_octal' among the many sibling tools. The description only states what it does, without context or exclusions.

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

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