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Crystal Suppliers MCP

Get Crystal Sourcing Guidance

crystal_get_sourcing_guidance
Read-onlyIdempotent

Get source-linked procurement checks for bracelets, loose beads, accessories, or raw materials. Adjacent categories are advisory only and never return invented inventory or SKUs.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
channelNo
categoryYes
packagingNo
destinationNo
contentAssetsNo
proofRequirementsNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
categoryYes
coverageYes
warningsYes
checklistYes
sourceUrlsYes
shortAnswerYes
comparisonCriteriaYes
requiresManualConfirmationYes

TDQS

A3.8/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, etc. The description adds valuable context by stating the tool never returns invented inventory or SKUs, reinforcing the openWorldHint=false and increasing trustworthiness. No contradictions with annotations.

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?

Two concise sentences: first defines purpose and scope, second adds an important constraint. No wasted words or redundancy.

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?

Given 6 parameters with 0% schema coverage and an output schema (not shown), the description is minimal. It covers the core purpose and category constraint but omits details on other parameters and return format. Adequate for simple cases but lacks depth for complex parameter usage.

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

Parameters2/5

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

Schema description coverage is 0%, yet the description only hints at the 'category' parameter by listing its valid values. Other parameters (channel, packaging, destination, contentAssets, proofRequirements) are not explained, leaving the agent to infer their purpose from names alone. This is insufficient to compensate for the missing schema descriptions.

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 the tool retrieves 'source-linked procurement checks' for specific categories (bracelets, beads, accessories, raw materials). It distinguishes itself from siblings by focusing on procurement guidance for these exact categories and explicitly states what it does not return (invented inventory/SKUs).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Description specifies which categories to use and warns that adjacent categories are advisory only, providing some usage context. However, it does not mention when to use alternatives or provide explicit when-not conditions relative to sibling tools.

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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TDQS

A4/5.0
Disambiguation4/5

Each tool has a distinct purpose: building shortlists, fetching product details, sourcing guidance across categories, listing materials, preparing inquiries, and searching. Minor overlap between search and get_product, but descriptions clarify boundaries.

Naming Consistency5/5

All tools follow a consistent 'crystal_verb_noun' pattern (e.g., build_procurement_shortlist, get_product, list_materials), with clear and predictable naming.

Tool Count5/5

Six tools are well-suited for the crystal sourcing domain, covering search, details, shortlisting, materials listing, guidance, and inquiry preparation without being excessive or insufficient.

Completeness4/5

The tool set covers the main workflows: searching, retrieving details, building shortlists, listing materials, getting guidance, and preparing inquiries. A minor gap is lack of update/delete operations, but the domain is advisory-focused.