keycloak-mcp-server

set-group-attributes

Update group attributes in Keycloak to add or modify organization metadata for a specific realm and group.

Instructions

Set group attributes (organization metadata)

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "realm": "<realm>",
      "groupId": "<groupId>",
      "attributes": "<attributes>"
    },
    "name": "set-group-attributes"
  }
}

Input Schema

Name	Required	Description
`realm`	Yes	Realm name
`groupId`	Yes	Group ID
`attributes`	Yes	Group attributes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv2.0.0Aug 14, 2026

TDQS

C2.9/5.0

Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does not state whether the operation replaces existing attributes entirely or merges with them, what permissions are required, or what the response indicates. This is a significant gap for a mutation tool.

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 extremely short and front-loaded with the verb and resource, making it concise and free of waste. However, it omits important behavioral and usage context, so the brevity is more a result of under-specification than carefully chosen completeness.

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 tool has three parameters, a nested object, no output schema, and no annotations, the description is the sole source of guidance. It only covers the primary action and provides no context about side effects, return values, or how the attributes parameter is interpreted. This is insufficient for an agent to invoke the tool confidently.

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 provides 100% coverage for all three parameters with basic descriptions. The tool description adds a small clarification that attributes are 'organization metadata,' but otherwise adds no new meaning to realm, groupId, or attributes. This meets the baseline expectation but does not go beyond it.

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 identifies the action ('Set') and the target resource ('group attributes'), with a parenthetical clarifying these are organization metadata. This distinguishes it from related tools like get-group-attributes and create-group, though it doesn't detail the exact semantics of 'set' (e.g., merge vs replace).

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 like update-group, create-group, or set-user-attributes. The description only states the function with no mention of prerequisites, exclusions, or scenarios where this tool is preferred.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server