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paoloamato2

Keycloak MCP Server

by paoloamato2

list_client_roles

List all roles assigned to a client in a Keycloak realm, with optional search and pagination.

Instructions

List all roles for a client.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
realmYesRealm name
client_uuidYesClient UUID
searchNoSearch string for role name
firstNoPagination offset
maxNoMaximum results size
briefRepresentationNoIf true, return brief representation
Behavior2/5

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

No annotations are provided, so the description must disclose behavior. It omits details like support for filtering, pagination, or brief representation, which are available as parameters in the schema. The agent is left unaware of these capabilities.

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

Conciseness4/5

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

The description is a single, concise sentence with no unnecessary words. It could be slightly expanded for clarity, but it is appropriately front-loaded.

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

Completeness2/5

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

Despite having 6 parameters and no output schema, the description only states the basic purpose. It does not explain return format, pagination behavior, or how to use parameters like search, first, max, or briefRepresentation. The tool is simple, but completeness is lacking.

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%, so parameters are already described. The description adds no additional meaning beyond the schema, meeting the baseline expectation.

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 clearly states the tool lists roles for a client, which is a specific verb+resource. However, it does not distinguish between client-defined roles and composite roles, nor does it differentiate from siblings like list_realm_roles.

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 is provided on when to use this tool vs. alternatives such as get_client_role or list_client_role_groups. The description lacks context on usage scenarios.

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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