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eitan3

Gmail + Calendar MCP Server

by eitan3

unsubscribe_calendar

Remove a calendar from your Google Calendar list without deleting the calendar itself.

Instructions

Remove a calendar from this account's calendar list (does not delete the calendar).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
calendar_idYes
accountNo
passwordNo
Behavior2/5

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

No annotations are provided, so the description carries full burden. It only states that the calendar is not deleted, but fails to disclose any other behavioral traits such as required authentication, side effects, or reversible nature. For a mutation tool, this is insufficient.

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 a single, concise sentence that communicates the core purpose and a key differentiator. No extraneous information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With three parameters, no schema documentation, and no output schema, the description is severely incomplete. It omits parameter explanations and fails to provide context needed for correct usage, such as the purpose of account and password fields.

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 does not explain any of the three parameters (calendar_id, account, password). Without any parameter documentation, the agent cannot correctly invoke the tool.

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?

Description clearly states the action: remove a calendar from the account's list, and explicitly distinguishes from deletion ('does not delete the calendar'). This differentiates from sibling tools like 'delete_calendar'.

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?

Description implies when to use (to unsubscribe) but provides no explicit guidance on when not to use, prerequisites, or alternatives. Sibling tools like 'subscribe_calendar' and 'delete_calendar' exist but are not mentioned.

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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