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pghdma

CallRail MCP

list_webhooks

Retrieve webhook subscriptions for your account or a specific company. Filter by company, page, or page size.

Instructions

List webhook subscriptions on the account or one company.

Args: company_id: Filter to webhooks attached to one company. per_page: Page size (max 250). page: 1-indexed. account_id: Auto-resolves if omitted.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pageNo
per_pageNo
account_idNo
company_idNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations are provided, and the description lacks behavioral traits such as read-only nature, pagination behavior, auth requirements, or rate limits. It only clarifies parameter semantics.

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 succinct, with a front-loaded purpose statement followed by concise parameter details. No extraneous information.

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 presence of an output schema, return value documentation is unnecessary. The description covers parameter semantics well but omits behavioral context like read-only nature and explicit pagination details, which are implied.

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

Parameters5/5

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

With 0% schema description coverage, the description adds significant meaning: 'Filter to webhooks attached to one company' for company_id, 'Page size (max 250)', '1-indexed', and 'Auto-resolves if omitted' for account_id, fully compensating for the schema gap.

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 verb 'List' and resource 'webhook subscriptions' with scope 'on the account or one company', effectively distinguishing from sibling 'get_webhook' which retrieves a single webhook.

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 listing webhooks but does not provide explicit guidance on when to use versus alternatives like get_webhook or any conditions for using this tool.

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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