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UVU-Store

shopify-graphql-mcp

by UVU-Store

update_metaobject

Update an existing Shopify metaobject by specifying its ID and the field values to change.

Instructions

Update an existing metaobject

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesMetaobject ID
fieldsYesMetaobject fields to update
Behavior1/5

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

With no annotations provided, the description must carry the full burden of behavioral disclosure, but it merely restates the tool's purpose. It does not mention whether the update is partial or full replacement, how missing fields are handled, or any return value.

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, efficient sentence with no wasted words. It is front-loaded and direct, though somewhat sparse overall.

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?

As a mutation tool with no output schema and no annotations, the description is incomplete. It lacks essential context about update semantics (e.g., does it merge or replace fields?), which an agent needs to invoke it correctly.

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 input schema provides complete descriptions for both parameters (id and fields), achieving 100% schema description coverage. The tool description adds no parameter semantics beyond what the schema already states, so the baseline of 3 applies.

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 'Update an existing metaobject' clearly specifies the action (update) and resource (metaobject), and distinguishes it from sibling tools like create_metaobject, delete_metaobject, and get_metaobjects. It is concise and unambiguous.

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?

The description provides no guidance on when to use this tool versus alternatives. It does not mention prerequisites, selection criteria, or exclusions, leaving the agent without explicit direction.

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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