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paoloamato2

Keycloak MCP Server

by paoloamato2

update_realm

Update a Keycloak realm's configuration by specifying the realm name and a JSON object with desired changes.

Instructions

Update a realm.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
realmYesRealm name
realm_dataYesRealm representation
Behavior2/5

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

With no annotations and a minimal description, the tool fails to disclose behavioral traits like idempotency, required permissions, or side effects. The description adds no value beyond the name.

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 sentence, which is concise and front-loaded. However, it is so brief that it sacrifices informational value.

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?

Given the minimal schema descriptions and no output schema, the description lacks context for effective usage. It does not explain what updating a realm entails or how it interacts with other realm operations.

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?

The input schema has 100% description coverage, but the descriptions are minimal ('Realm name', 'Realm representation'). The tool description does not add any extra meaning or clarify the structure of the realm_data object.

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 verb 'update' and the resource 'realm', providing a clear purpose. However, it does not differentiate from sibling tools like update_client or update_group, which use the same pattern.

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 versus alternatives such as create_realm, delete_realm, or other update tools. There is no context on prerequisites or typical use cases.

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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