Open WebUI MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states the action ('Create') without any details on permissions required, whether the operation is idempotent, what happens on failure, rate limits, or the expected outcome beyond creation. For a mutation tool with zero annotation coverage, this leaves critical behavioral traits unspecified.

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

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

The description is a single, efficient sentence that directly states the tool's purpose without unnecessary words. It's front-loaded with the core action and resource, making it easy to parse quickly. There's no wasted verbiage, and every word contributes to understanding the basic function.

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

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

Given the tool's complexity as a mutation operation with no annotations, 1 parameter (though nested), and an output schema (which helps but isn't described), the description is incomplete. It lacks behavioral context, parameter details, and usage guidelines, making it insufficient for an agent to confidently invoke the tool without additional assumptions or external knowledge.

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

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

The description adds no parameter information beyond what the input schema provides. With 0% schema description coverage, the schema only defines parameter names and types without explaining semantics. The description doesn't compensate by clarifying what 'name' and 'description' mean in context (e.g., naming constraints, description purpose), leaving parameters inadequately documented.

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

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

The description clearly states the verb ('Create') and resource ('new team chat channel'), making the purpose immediately understandable. It distinguishes this from sibling tools like 'list_channels' or 'update_channel' by specifying creation rather than listing or modifying. However, it doesn't explicitly differentiate from other creation tools like 'create_group' or 'create_folder', which would require more specific context about what makes a 'team chat channel' unique.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

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. It doesn't mention prerequisites (e.g., needing appropriate permissions), when not to use it (e.g., for existing channels), or direct alternatives among siblings like 'create_group' for different purposes. The agent must infer usage from the tool name alone, which is insufficient for optimal selection.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.