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grooving6

discord-mcp

by grooving6

List roles

list_roles

Get a list of all roles in a Discord server, sorted from highest to lowest. Useful for understanding role hierarchy.

Instructions

List all roles in a server, highest first.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
serverNoServer (guild) name or id. Optional when the bot is in a single server or DISCORD_GUILD_ID is set.
Behavior3/5

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

No annotations provided, so description must carry behavioral info. It states the tool lists roles (read operation) but does not disclose permissions, rate limits, or error behavior. Adequate for a simple list.

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

Conciseness5/5

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

Single sentence, front-loaded with key information, no filler. Every word serves a purpose.

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

Completeness4/5

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

The description covers what the tool does and the ordering. It omits return format, but for a list tool this is acceptable. Could mention that roles include permissions data.

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 coverage is 100%; description adds no extra meaning beyond the schema's parameter description for 'server'. Baseline score of 3 applies.

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 clearly states the action (list), the resource (roles), the scope (in a server), and the ordering (highest first). It distinguishes from sibling tools like assign_role, create_role, delete_role, etc.

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

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for viewing roles but does not explicitly state when to use vs alternatives. However, the context is clear as it's a read-only list tool among many role-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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