mcp-sympy

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions 'exact replacement' and 'without simplification', hinting at a mutation operation that preserves form, but fails to detail critical aspects like permissions, side effects, error handling, or output format. This leaves significant gaps in understanding the tool's behavior.

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 concise with a single phrase, 'Exact replacement without simplification', which is front-loaded and wastes no words. While it may be under-specified, it is structurally efficient and to the point.

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's complexity (symbolic manipulation), lack of annotations, 0% schema coverage, and presence of an output schema, the description is incomplete. It does not adequately cover purpose, usage, parameters, or behavioral traits, leaving the agent poorly equipped to use the tool effectively despite the output schema potentially aiding return values.

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 description coverage is 0%, meaning parameters 'expr' and 'mapping' are undocumented in the schema. The description does not explain what these parameters represent (e.g., 'expr' as a symbolic expression, 'mapping' as substitution rules), their expected formats, or usage examples, failing to compensate for the lack of schema 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?

The description 'Exact replacement without simplification' states a general operation but lacks specificity about what is being replaced (e.g., symbolic expressions) and what resources are involved. It does not clearly distinguish from sibling tools like 'sympy_replace' or 'sympy_subs', which likely perform similar substitution operations, making it vague and insufficient for precise tool selection.

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 alternatives such as 'sympy_replace' or 'sympy_subs', nor any context or prerequisites for its application. The description offers no explicit or implied usage instructions, leaving the agent without direction on tool selection.

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