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karbassi

slack-mcp

by karbassi

views_update

Update an existing Slack modal view by providing a new view payload and optional identifiers to specify which view to update.

Instructions

Update an existing view.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
hashNoA string that represents view state to protect against possible race conditions when updating the view.
viewYesA view payload object (of type ``modal``) with the updated contents.
view_idNoA unique identifier of the view to be updated, returned when the view was opened (e.g. ``VMHU10V25``).
external_idNoA unique identifier set by the developer when opening the view, identifying which view to update.

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 provided, the description carries full burden for behavioral disclosure. It only states 'Update an existing view' without explaining side effects, required permissions, error conditions, or the role of the hash parameter for race conditions. This is insufficient for safe usage.

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

Conciseness2/5

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

While the description is extremely concise (one sentence), it is overly sparse for a tool with four parameters and no annotations. It lacks necessary context, making it ineffective despite its brevity.

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?

Given the tool's complexity (4 parameters, 1 required, nested objects, output schema), the single-sentence description is grossly incomplete. It fails to explain parameter relationships, the expected structure of the 'view' object, or how hash, view_id, and external_id interact.

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?

Schema description coverage is 100%, so each parameter is already well-documented in the schema. The description adds no additional meaning beyond what the schema provides, which is the baseline for a tool with full schema coverage.

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 'Update an existing view' clearly states the action (update) and the resource (existing view). It effectively distinguishes from sibling tools like views_open, views_publish, and views_push, all of which have different purposes.

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?

The description provides no guidance on when to use this tool versus alternatives. There is no mention of prerequisites, when not to use it, or any comparative context with other view-related tools.

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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