Discord Server Setup MCP

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

No annotations are provided, so the description carries full burden. It states this is a 'set' operation (implying mutation) but doesn't disclose behavioral traits like whether changes are reversible, what permissions are required, if it affects existing members, or what happens on success/failure. For a mutation tool with zero annotation coverage, this is inadequate.

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 front-loads the core purpose without unnecessary words. Every part of the sentence contributes directly to understanding the tool's 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 this is a mutation tool with no annotations, no output schema, and 2 parameters (one optional), the description is incomplete. It doesn't explain what the tool returns, error conditions, or important behavioral context (like whether 'guildId' defaults to current guild). The simplicity of the schema doesn't compensate for the lack of operational guidance.

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?

Schema description coverage is 0%, but the description doesn't add any parameter details beyond what the schema already shows. The schema clearly defines 'guildId' (string) and 'setting' (enum: 'all_messages', 'only_mentions'), with 'setting' required. Since the description provides no parameter semantics, it meets the baseline of 3 given the schema's self-explanatory structure.

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 action ('Sets') and the resource ('default notification setting for new members joining the server'), making the purpose immediately understandable. It doesn't explicitly differentiate from sibling tools like 'set_content_filter' or 'update_server_settings', but the specificity of 'notification setting for new members' provides reasonable distinction.

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 (like needing admin permissions), when this setting applies, or how it relates to other notification-related tools (none appear in the sibling list, but context is missing).

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