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anthesiallc

StoreSignal MCP Server

by anthesiallc

compare_stores

Compare 2-5 Shopify stores side-by-side. Get profiles, shared and unique apps, payment provider overlap, and tier comparison for competitive analysis.

Instructions

Side-by-side comparison of 2-5 Shopify stores.

Returns each store's profile plus a comparison table: shared apps, apps unique to each, payment-provider overlap, tier comparison. Good for "compare https://A and https://B" or competitive recon questions.

Args: urls: 2-5 Shopify store URLs to compare.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlsYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

No annotations are provided, so the description carries full burden. It discloses that the tool returns each store's profile and a comparison table, but does not mention any behavioral traits like data freshness, authentication needs, rate limits, or whether the tool is read-only. The lack of transparency is moderate.

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 concise (3 sentences plus example) and front-loaded with purpose. It uses bullet points for expected output, which aids readability. Every sentence adds value, though the example could be integrated more seamlessly.

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 the presence of an output schema (not shown) and only one parameter, the description adequately covers input constraints and output types. However, it lacks details on error handling (e.g., what happens with fewer than 2 URLs) and does not fully compensate for absent annotations.

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?

With schema description coverage at 0%, the description adds meaning to the single parameter 'urls' by specifying it accepts 2-5 Shopify store URLs. This provides constraints and domain context not present in the schema, though it could elaborate on URL format.

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?

The description clearly states the tool's purpose: side-by-side comparison of 2-5 Shopify stores, with specific output details (profile, comparison table). The verb 'compare' and resource 'stores' define the action and object. It distinguishes from siblings like 'analyze_store' (single store) by requiring multiple URLs.

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

Usage Guidelines4/5

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

The description provides usage context with examples ('compare https://A and https://B' or competitive recon). It implies when to use (comparing multiple stores) but does not explicitly exclude alternatives or state when not to use it versus siblings.

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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