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karbassi

slack-mcp

by karbassi

reminders_complete

Marks a specified Slack reminder as complete using its ID. Removes the reminder from your list.

Instructions

Mark a reminder as complete.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
team_idNoEncoded team ID the reminder belongs to, required for org-wide app tokens (e.g. ``T0123``).
reminderYesThe ID of the reminder to mark complete (e.g. ``Rm0123``).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

With no annotations, the description carries the full burden of behavioral disclosure. It only states the purpose without revealing whether the action is destructive, requires specific permissions, is reversible, or what happens if already completed. This is insufficient for safe tool invocation.

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 extremely concise at 5 words, front-loading the primary action. However, the brevity sacrifices important behavioral context that could be included without adding verbosity.

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 that the tool has a simple operation but lacks annotations and an output schema, the description fails to cover behavioral aspects like permissions, idempotency, or return values. It is not complete enough for an agent to use confidently.

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 has 100% description coverage for both parameters (team_id and reminder). The description adds no additional meaning beyond what the schema already provides, so the baseline score of 3 is appropriate.

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 'Mark a reminder as complete' clearly states the action (mark complete) and the resource (reminder). It distinguishes from sibling tools like reminders_add, reminders_delete, reminders_info, and reminders_list by specifying a unique operation.

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 is provided on when to use this tool versus alternatives. There is no mention of prerequisites, context, or when not to use it. The agent must infer usage solely from the purpose.

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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