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karbassi

slack-mcp

by karbassi

views_open

Opens a modal view in Slack for a user. Provide a trigger ID and view payload to display forms or information.

Instructions

Open a view for a user.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
trigger_idYes
viewYes

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 full burden but only states it 'opens' a view. It does not disclose whether it replaces existing views, what happens on error, authentication requirements, or side effects on user state. This is insufficient for an agent to understand outcomes.

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?

Single sentence is concise but at the cost of missing critical information. It is front-loaded but earns its place only partially; the brevity does not compensate for lack of detail on parameters and usage.

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?

The description is severely incomplete given the complex input schema with a nested object and no parameter descriptions. It fails to explain how to construct the 'view' object or interpret trigger_id. The output schema exists but does not help with invocation.

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%, and the description does not explain any parameters. While parameter names (trigger_id, view) hint at their roles, the description adds no meaning about the required object structure or how to obtain trigger_id. This leaves the agent with no guidance beyond raw schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Open a view for a user' clearly states the action (open) and resource (view) for a user. It distinguishes from sibling tools like views_publish and views_update by implying this tool initiates display of an existing view to a user, but could be more specific about what 'view' means.

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 views_publish or views_push. The description does not mention prerequisites, such as requiring a trigger_id obtained from a user interaction, nor does it indicate when it should be avoided.

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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