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Arsel MCP Server

Arsel MCP Server

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by Arsel-SA
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TypeScript
Hybrid

Get Contact Property

get-contact-property
Read-onlyIdempotent

Fetch one custom contact field by its unique property ID to inspect contact data in an Arsel organization.

Instructions

Get one custom contact field.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "id": "<id>"
    },
    "name": "get-contact-property"
  }
}

Input Schema

NameRequiredDescriptionDefault
idYesThe property id.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.9/5.0
Behavior2/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered structurally. The description adds nothing beyond that — no note on what is returned, error behavior for a missing id, or auth requirements.

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?

A single front-loaded sentence with zero waste. It is efficient, though arguably terse to the point of under-specification rather than optimally concise.

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

Completeness3/5

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

For a simple one-param read tool with full schema coverage and complete safety annotations, the essentials are present. The gap is that no output schema exists, yet the description says nothing about what a property record contains.

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?

Schema coverage is 100% and the schema documents the single "id" parameter as a UUID with a pattern. The description says "contact field" while the schema calls it a "property id," a minor terminology mismatch but no added syntax or meaning. Baseline 3 is appropriate when the schema does the work.

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

Purpose4/5

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

The description states a specific verb ("Get") and resource ("one custom contact field"), and "one" signals single-item retrieval rather than a list. It does not name or differentiate from the sibling list-contact-properties, so it falls short of a 5.

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 explicit when-to-use guidance, no mention of when to prefer get-contact-property over list-contact-properties, and no prerequisites. The single-item framing only weakly implies when it applies.

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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