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tschoonj

xraylib MCP Server

by tschoonj

ElectronConfig

Obtain the electron configuration for a specific shell of any element by providing the atomic number and shell name.

Instructions

Get the electron configuration for a given shell of an element.

Args: Z: Atomic number (1-120) shell: Shell name, e.g. "K_SHELL", "L1_SHELL", "M5_SHELL"

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
ZYes
shellYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations provided; description indicates a read operation ('Get'). Lacks disclosure of behavioral traits like performance, errors, or side effects, but the existence of an output schema partly fills the gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

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

Description is concise with two sentences plus an Args list, front-loaded with the purpose. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple lookup tool with two parameters and an output schema, the description provides sufficient context. Could optionally list all valid shell names, but the example suffices.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema has 0% description coverage. Description adds meaning: Z is atomic number (1-120), shell is a shell name like 'K_SHELL', providing essential context beyond the schema's type definitions.

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

Purpose5/5

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

Description clearly states 'Get the electron configuration for a given shell of an element' with specific parameters Z and shell. This distinguishes it from sibling tools like AtomicNumberToSymbol or EdgeEnergy.

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?

No explicit guidance on when to use this tool vs alternatives. Given the large sibling list, such guidance would be helpful for an AI agent to select the correct tool.

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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