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pghdma

CallRail MCP

get_tag

Retrieve complete details for a single tag using its numeric ID. Optionally specify an account ID; if omitted, it auto-resolves.

Instructions

Get full detail for one tag.

Args: tag_id: Numeric tag id. account_id: Auto-resolves if omitted.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
tag_idYes
account_idNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

The description indicates a read operation ('Get'), implying no destructive effects, which is sufficient given no annotations. However, it does not elaborate on error handling or authentication requirements, but the read-only nature is clear.

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?

The description is very concise, consisting of one sentence and two parameter lines. It is front-loaded with the primary purpose and wastes no 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?

Given the existence of an output schema, the description does not need to detail return values. It covers the tool's purpose and both parameters adequately. Could mention that the tag must exist, but for a simple get, it's largely complete.

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 0% schema coverage, the description adds meaningful context: tag_id is described as 'Numeric tag id' (clarifying expected format) and account_id as 'Auto-resolves if omitted', explaining default behavior. This adds value beyond the raw schema.

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 'Get full detail for one tag', which specifies the action (get) and the resource (full detail of one tag). It effectively distinguishes from sibling tools like list_tags (which lists multiple tags) and create_tag (which creates a new tag).

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?

The description implies usage for retrieving details of a single tag via its ID, but does not explicitly state when to use this tool over alternatives (e.g., list_tags for summaries). No exclusions or alternative mentions are provided.

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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