Low Risk

get_user

Get detailed information about a specific IAM user. This tool retrieves comprehensive information about an IAM user including attached policies, group memberships, and access keys. Use this to get a complete picture of a user's permissions and configuration. ## Usage Tips: - Use this after list...

Single-target operation

Part of the AWS IAM MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

AI agents call get_user to retrieve information from AWS IAM MCP Server without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though get_user only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

aws-iam-mcp-server.yaml
tools:
  get_user:
    rules:
      - action: allow

See the full AWS IAM MCP Server policy for all 29 tools.

Tool Name get_user
Category Read
Risk Level Low

View all 29 tools →

Agents calling read-class tools like get_user have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.

What does the get_user tool do? +

Get detailed information about a specific IAM user. This tool retrieves comprehensive information about an IAM user including attached policies, group memberships, and access keys. Use this to get a complete picture of a user's permissions and configuration. ## Usage Tips: - Use this after list_users to get detailed information about specific users - Review attached policies to understand user permissions - Check access keys to identify potential security issues Args: ctx: MCP context for error reporting user_name: The name of the IAM user Returns: UserDetailsResponse containing comprehensive user information. It is categorised as a Read tool in the AWS IAM MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_user? +

Add a rule in your Intercept YAML policy under the tools section for get_user. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the AWS IAM MCP Server MCP server.

What risk level is get_user? +

get_user is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_user? +

Yes. Add a rate_limit block to the get_user rule in your Intercept policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block get_user completely? +

Set action: deny in the Intercept policy for get_user. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides get_user? +

get_user is provided by the AWS IAM MCP Server MCP server (awslabs.iam-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Let agents act without letting them run wild.

Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.

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