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seandkendall

productivity-mcp

by seandkendall

list_calendars

Retrieve all calendars associated with your email account to view available calendars and their details.

Instructions

List calendars on an account.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
accountNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations, the description must disclose behavioral traits, but it only says 'list calendars on an account.' It doesn't mention read-only nature, authentication needs, pagination, or whether it returns all calendars including hidden ones.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Extremely concise (5 words), but at the cost of providing essential context. It is not overly verbose, but it lacks necessary details for an agent to use it effectively.

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?

Given the existence of an output schema, a parameter, and many sibling tools, the description is incomplete. It does not explain the parameter's effect, output structure, or when to use/avoid it.

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

Parameters1/5

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

Schema description coverage is 0%. The description mentions 'on an account' but does not explain the 'account' parameter: whether it filters by a specific account or lists across all accounts. The parameter is optional but its effect is unclear.

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 'List calendars on an account,' which is a specific verb and resource. It distinguishes from sibling tools like 'list_calendar_accounts' (lists accounts) and 'get_event' (retrieves a specific event).

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?

No guidance on when to use this tool versus alternatives like 'list_calendar_accounts' or after creating events. No context about prerequisites or when not to use it.

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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