node

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

No annotations are provided, so the description carries full burden. It discloses that code executes locally via node -e, but does not mention potential side effects, security implications, sandboxing, or return value behavior. While not misleading, it lacks depth for a clear behavioral profile.

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 a single concise sentence that front-loads the core action ('Execute single piece of code in local Node.js (node -e)') and adds relevant use cases. No redundant information.

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 simplicity of the tool (2 parameters, no nested objects), the description covers purpose and typical use. However, it omits details about output format or error handling, which would be helpful since there is no output schema. Still, it is nearly complete for a straightforward execution tool.

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 100%, so the baseline is 3. The description does not add meaning beyond the schema: both 'code' and 'timeout' are already described adequately in the input schema properties. No additional parameter context is provided.

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 clearly states the tool executes a single piece of code in local Node.js (node -e) and specifies typical use cases like JavaScript calculations and JSON processing. It differentiates from siblings (bash, python) by focusing on JavaScript.

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 mentions suitability for JavaScript calculations and JSON processing, implying when to use, but does not explicitly state when not to use or provide direct comparisons to sibling tools (bash, python). Guidance is implied rather than explicit.

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