Node Dev MCP Server

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 states the action ('write') but doesn't clarify if this overwrites existing files, creates new ones, or appends content. It also omits critical details like error handling, file permissions, or workspace constraints, which are essential for safe tool invocation in a mutation context.

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, direct sentence that efficiently conveys the core functionality without any fluff. It's front-loaded with the essential action and target, making it easy to parse quickly. Every word serves a purpose, achieving optimal conciseness for this level of detail.

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?

For a mutation tool with no annotations and no output schema, the description is insufficient. It lacks details on behavioral traits (e.g., overwrite behavior, error conditions), output expectations, or integration with sibling tools like git operations. Given the complexity of file writing in a workspace, more context is needed for reliable agent 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 input schema has 100% description coverage, clearly documenting all three parameters (name, content, commitMessage). The description adds no additional semantic context beyond what's in the schema, such as explaining the relationship between parameters or usage nuances. This meets the baseline for high schema coverage but doesn't enhance understanding.

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 action ('write content') and target ('to a file in the workspace folder'), making the purpose immediately understandable. However, it doesn't explicitly differentiate from siblings like 'apply_patch' or 'create_folder', which also modify files/folders, leaving some ambiguity about when this specific write operation is preferred.

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 no guidance on when to use this tool versus alternatives. For example, it doesn't clarify if this is for creating new files, overwriting existing ones, or how it differs from 'apply_patch' for modifications. There's no mention of prerequisites, constraints, or typical use cases, leaving usage entirely implicit.

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