mcp-sympy

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

With no annotations provided, the description carries full burden for behavioral disclosure but offers none. It doesn't indicate whether this is a read-only transformation or modifies data, what permissions might be required, what format the output takes, or any error conditions. The phrase 'Rationalize denominator' implies a mathematical operation but gives no insight into implementation details or behavioral characteristics.

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 maximally concise at just two words. While this represents severe under-specification rather than ideal conciseness, from a pure structural perspective there is zero wasted language. Every word earns its place, even though those two words are insufficient for the tool's complexity.

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 that this is a mathematical transformation tool with no annotations, 0% schema description coverage, but with an output schema present, the description is severely incomplete. While the output schema might document return values, the description fails to explain what the tool actually does, when to use it, or how parameters work. For a symbolic algebra tool among 150+ siblings, this minimal description provides inadequate context for effective use.

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 schema description coverage is 0%, meaning the single parameter 'expr' has no documentation in the schema. The description provides no information about this parameter - not what type of expression it expects, format requirements, examples, or constraints. For a tool with one undocumented parameter, this represents a complete failure to add semantic value beyond the bare schema.

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 'Rationalize denominator' is a tautology that essentially restates the tool name 'sympy_rationalize' without adding meaningful context. It doesn't specify what mathematical operation this performs (e.g., eliminating radicals from denominators of rational expressions) or what resource it acts upon. While it hints at a mathematical transformation, it lacks the specificity needed to distinguish it from similar symbolic algebra tools.

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 absolutely no guidance on when to use this tool versus alternatives. It doesn't mention any prerequisites, typical use cases, or comparisons with sibling tools like sympy_simplify, sympy_radsimp, or sympy_ratsimp that might perform related algebraic manipulations. An agent would have no context for selecting this tool appropriately.

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