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shigechika

keycloak-mcp

by shigechika

set_user_enabled

Enable or disable a user account to block SSO logins for compromised or decommissioned users while preserving custom attributes and existing sessions.

Instructions

Enable or disable a user account.

Disabling blocks all authentication (SSO logins) for the user — the containment action for a compromised or decommissioned account. Only the enabled flag is changed; custom attributes are preserved.

Disabling does not terminate existing sessions (an already-issued token stays valid until it expires), so when disabling this reports how many sessions remain and to run logout_user to end them immediately.

Args: username: Exact username (email). enabled: True to enable, False to disable.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
enabledYes
usernameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior5/5

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

With no annotations, the description fully discloses behavior: blocking SSO logins, preserving custom attributes, not terminating existing sessions, and reporting remaining sessions. This is comprehensive and transparent.

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?

The description is concise and well-structured, with a clear opening sentence, bulleted args, and no wasted words. It front-loads the key action and follows with important details.

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

Completeness5/5

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

Given the presence of an output schema and many sibling tools, the description is complete. It explains the tool's behavior, side effects, and relationship to logout_user, covering all necessary aspects for correct invocation.

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

Parameters4/5

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

Schema coverage is 0%, so the description must explain parameters. It describes 'username' as exact username (email) and 'enabled' as True/False. While this adds minimal value beyond the schema types, it is sufficient and contextually correct.

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 explicitly states the tool enables or disables a user account, using a specific verb and resource. It distinguishes from siblings like logout_user by explaining that disabling blocks authentication but does not end existing sessions, making the purpose clear and unique.

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

Usage Guidelines5/5

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

The description explicitly states when to use this tool (disabling a compromised or decommissioned account) and mentions an alternative (logout_user) for terminating existing sessions. This provides clear guidance on when to use versus other 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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