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aferreiraguido

javascript-mcp-server

node_process_env

Analyze a JavaScript project's process.env usage to list environment variables and identify configuration dependencies.

Instructions

Environment variables read with process.env in the project (environment dependencies).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesName or path of the loaded project
Behavior2/5

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. It only states that env vars are 'read' but does not explain whether it returns names, values, or a summary, nor does it mention any side effects. This is insufficient for an agent to understand 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.

Conciseness4/5

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

The description is a single short sentence with no redundancy, making it concise. However, it is so brief that it sacrifices informational value, though it remains appropriately sized for a simple tool.

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?

With no output schema and no annotations, the description should explain return values and usage context, but it does not. It leaves significant gaps about what the tool produces and how to invoke it effectively, making it incomplete for an agent.

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?

The sole parameter 'name' is fully described in the schema with 100% coverage, and the description adds no additional meaning. The schema handles parameter semantics adequately, so the baseline score of 3 is appropriate.

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

Purpose3/5

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

The description mentions 'Environment variables read with process.env' but lacks a clear action verb like 'list' or 'get', making the tool's function somewhat ambiguous. It identifies the resource (environment dependencies) but reads more as a topic than a specific operation.

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?

There is no guidance on when to use this tool versus alternatives. It neither states appropriate contexts nor references sibling tools, leaving the agent without decision support for tool selection.

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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