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paoloamato2

Keycloak MCP Server

by paoloamato2

unregister_client_cluster_node

Remove a cluster node from a client's registered nodes in a Keycloak realm using its host name.

Instructions

Unregister a cluster node from the client.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
realmYesRealm name
client_uuidYesClient UUID
nodeYesNode host name
Behavior2/5

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

No annotations are provided, and the description only states the action without disclosing side effects, required permissions, reversibility, or impact on the client's cluster state. For a mutation tool, this is insufficient.

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

Conciseness3/5

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

The description is a single short sentence, which is concise but lacks useful elaboration. It could include a brief note on what 'unregister' entails without losing conciseness.

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 no output schema, no annotations, and three required parameters, the description fails to explain the implications of unregistering a node, such as whether it disconnects or deletes it, or what happens to ongoing sessions. This is a significant gap.

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 schema descriptions already cover all three parameters with clear labels ('Realm name', 'Client UUID', 'Node host name'). The description adds no additional meaning beyond these, so it meets the baseline for 100% schema coverage.

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 uses a specific verb 'Unregister' and identifies the resource 'cluster node from the client.' This clearly distinguishes it from sibling tools like 'register_client_cluster_node' and 'test_client_nodes_available.'

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?

The description provides no guidance on when to use this tool versus alternatives, such as the inverse 'register_client_cluster_node' or other cluster management tools. No context about prerequisites or conditions is given.

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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